From 134f86e8d5c414409631b25b8c6f0ee45fbd8631 Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Thu, 3 Nov 2016 21:44:39 +1000 Subject: Initial update to OpenSim 0.8.2.1 source code. --- OpenSim/Region/Physics/Meshing/PrimMesher.cs | 2324 -------------------------- 1 file changed, 2324 deletions(-) delete mode 100644 OpenSim/Region/Physics/Meshing/PrimMesher.cs (limited to 'OpenSim/Region/Physics/Meshing/PrimMesher.cs') diff --git a/OpenSim/Region/Physics/Meshing/PrimMesher.cs b/OpenSim/Region/Physics/Meshing/PrimMesher.cs deleted file mode 100644 index 4049ee1..0000000 --- a/OpenSim/Region/Physics/Meshing/PrimMesher.cs +++ /dev/null @@ -1,2324 +0,0 @@ -/* - * Copyright (c) Contributors - * See CONTRIBUTORS.TXT for a full list of copyright holders. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of the OpenSimulator Project nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -using System; -using System.Collections.Generic; -using System.Text; -using System.IO; - -namespace PrimMesher -{ - public struct Quat - { - /// X value - public float X; - /// Y value - public float Y; - /// Z value - public float Z; - /// W value - public float W; - - public Quat(float x, float y, float z, float w) - { - X = x; - Y = y; - Z = z; - W = w; - } - - public Quat(Coord axis, float angle) - { - axis = axis.Normalize(); - - angle *= 0.5f; - float c = (float)Math.Cos(angle); - float s = (float)Math.Sin(angle); - - X = axis.X * s; - Y = axis.Y * s; - Z = axis.Z * s; - W = c; - - Normalize(); - } - - public float Length() - { - return (float)Math.Sqrt(X * X + Y * Y + Z * Z + W * W); - } - - public Quat Normalize() - { - const float MAG_THRESHOLD = 0.0000001f; - float mag = Length(); - - // Catch very small rounding errors when normalizing - if (mag > MAG_THRESHOLD) - { - float oomag = 1f / mag; - X *= oomag; - Y *= oomag; - Z *= oomag; - W *= oomag; - } - else - { - X = 0f; - Y = 0f; - Z = 0f; - W = 1f; - } - - return this; - } - - public static Quat operator *(Quat q1, Quat q2) - { - float x = q1.W * q2.X + q1.X * q2.W + q1.Y * q2.Z - q1.Z * q2.Y; - float y = q1.W * q2.Y - q1.X * q2.Z + q1.Y * q2.W + q1.Z * q2.X; - float z = q1.W * q2.Z + q1.X * q2.Y - q1.Y * q2.X + q1.Z * q2.W; - float w = q1.W * q2.W - q1.X * q2.X - q1.Y * q2.Y - q1.Z * q2.Z; - return new Quat(x, y, z, w); - } - - public override string ToString() - { - return "< X: " + this.X.ToString() + ", Y: " + this.Y.ToString() + ", Z: " + this.Z.ToString() + ", W: " + this.W.ToString() + ">"; - } - } - - public struct Coord - { - public float X; - public float Y; - public float Z; - - public Coord(float x, float y, float z) - { - this.X = x; - this.Y = y; - this.Z = z; - } - - public float Length() - { - return (float)Math.Sqrt(this.X * this.X + this.Y * this.Y + this.Z * this.Z); - } - - public Coord Invert() - { - this.X = -this.X; - this.Y = -this.Y; - this.Z = -this.Z; - - return this; - } - - public Coord Normalize() - { - const float MAG_THRESHOLD = 0.0000001f; - float mag = Length(); - - // Catch very small rounding errors when normalizing - if (mag > MAG_THRESHOLD) - { - float oomag = 1.0f / mag; - this.X *= oomag; - this.Y *= oomag; - this.Z *= oomag; - } - else - { - this.X = 0.0f; - this.Y = 0.0f; - this.Z = 0.0f; - } - - return this; - } - - public override string ToString() - { - return this.X.ToString() + " " + this.Y.ToString() + " " + this.Z.ToString(); - } - - public static Coord Cross(Coord c1, Coord c2) - { - return new Coord( - c1.Y * c2.Z - c2.Y * c1.Z, - c1.Z * c2.X - c2.Z * c1.X, - c1.X * c2.Y - c2.X * c1.Y - ); - } - - public static Coord operator +(Coord v, Coord a) - { - return new Coord(v.X + a.X, v.Y + a.Y, v.Z + a.Z); - } - - public static Coord operator *(Coord v, Coord m) - { - return new Coord(v.X * m.X, v.Y * m.Y, v.Z * m.Z); - } - - public static Coord operator *(Coord v, Quat q) - { - // From http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/transforms/ - - Coord c2 = new Coord(0.0f, 0.0f, 0.0f); - - c2.X = q.W * q.W * v.X + - 2f * q.Y * q.W * v.Z - - 2f * q.Z * q.W * v.Y + - q.X * q.X * v.X + - 2f * q.Y * q.X * v.Y + - 2f * q.Z * q.X * v.Z - - q.Z * q.Z * v.X - - q.Y * q.Y * v.X; - - c2.Y = - 2f * q.X * q.Y * v.X + - q.Y * q.Y * v.Y + - 2f * q.Z * q.Y * v.Z + - 2f * q.W * q.Z * v.X - - q.Z * q.Z * v.Y + - q.W * q.W * v.Y - - 2f * q.X * q.W * v.Z - - q.X * q.X * v.Y; - - c2.Z = - 2f * q.X * q.Z * v.X + - 2f * q.Y * q.Z * v.Y + - q.Z * q.Z * v.Z - - 2f * q.W * q.Y * v.X - - q.Y * q.Y * v.Z + - 2f * q.W * q.X * v.Y - - q.X * q.X * v.Z + - q.W * q.W * v.Z; - - return c2; - } - } - - public struct UVCoord - { - public float U; - public float V; - - - public UVCoord(float u, float v) - { - this.U = u; - this.V = v; - } - - public UVCoord Flip() - { - this.U = 1.0f - this.U; - this.V = 1.0f - this.V; - return this; - } - } - - public struct Face - { - public int primFace; - - // vertices - public int v1; - public int v2; - public int v3; - - //normals - public int n1; - public int n2; - public int n3; - - // uvs - public int uv1; - public int uv2; - public int uv3; - - public Face(int v1, int v2, int v3) - { - primFace = 0; - - this.v1 = v1; - this.v2 = v2; - this.v3 = v3; - - this.n1 = 0; - this.n2 = 0; - this.n3 = 0; - - this.uv1 = 0; - this.uv2 = 0; - this.uv3 = 0; - - } - - public Face(int v1, int v2, int v3, int n1, int n2, int n3) - { - primFace = 0; - - this.v1 = v1; - this.v2 = v2; - this.v3 = v3; - - this.n1 = n1; - this.n2 = n2; - this.n3 = n3; - - this.uv1 = 0; - this.uv2 = 0; - this.uv3 = 0; - } - - public Coord SurfaceNormal(List coordList) - { - Coord c1 = coordList[this.v1]; - Coord c2 = coordList[this.v2]; - Coord c3 = coordList[this.v3]; - - Coord edge1 = new Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z); - Coord edge2 = new Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z); - - return Coord.Cross(edge1, edge2).Normalize(); - } - } - - public struct ViewerFace - { - public int primFaceNumber; - - public Coord v1; - public Coord v2; - public Coord v3; - - public int coordIndex1; - public int coordIndex2; - public int coordIndex3; - - public Coord n1; - public Coord n2; - public Coord n3; - - public UVCoord uv1; - public UVCoord uv2; - public UVCoord uv3; - - public ViewerFace(int primFaceNumber) - { - this.primFaceNumber = primFaceNumber; - - this.v1 = new Coord(); - this.v2 = new Coord(); - this.v3 = new Coord(); - - this.coordIndex1 = this.coordIndex2 = this.coordIndex3 = -1; // -1 means not assigned yet - - this.n1 = new Coord(); - this.n2 = new Coord(); - this.n3 = new Coord(); - - this.uv1 = new UVCoord(); - this.uv2 = new UVCoord(); - this.uv3 = new UVCoord(); - } - - public void Scale(float x, float y, float z) - { - this.v1.X *= x; - this.v1.Y *= y; - this.v1.Z *= z; - - this.v2.X *= x; - this.v2.Y *= y; - this.v2.Z *= z; - - this.v3.X *= x; - this.v3.Y *= y; - this.v3.Z *= z; - } - - public void AddPos(float x, float y, float z) - { - this.v1.X += x; - this.v2.X += x; - this.v3.X += x; - - this.v1.Y += y; - this.v2.Y += y; - this.v3.Y += y; - - this.v1.Z += z; - this.v2.Z += z; - this.v3.Z += z; - } - - public void AddRot(Quat q) - { - this.v1 *= q; - this.v2 *= q; - this.v3 *= q; - - this.n1 *= q; - this.n2 *= q; - this.n3 *= q; - } - - public void CalcSurfaceNormal() - { - - Coord edge1 = new Coord(this.v2.X - this.v1.X, this.v2.Y - this.v1.Y, this.v2.Z - this.v1.Z); - Coord edge2 = new Coord(this.v3.X - this.v1.X, this.v3.Y - this.v1.Y, this.v3.Z - this.v1.Z); - - this.n1 = this.n2 = this.n3 = Coord.Cross(edge1, edge2).Normalize(); - } - } - - internal struct Angle - { - internal float angle; - internal float X; - internal float Y; - - internal Angle(float angle, float x, float y) - { - this.angle = angle; - this.X = x; - this.Y = y; - } - } - - internal class AngleList - { - private float iX, iY; // intersection point - - private static Angle[] angles3 = - { - new Angle(0.0f, 1.0f, 0.0f), - new Angle(0.33333333333333333f, -0.5f, 0.86602540378443871f), - new Angle(0.66666666666666667f, -0.5f, -0.86602540378443837f), - new Angle(1.0f, 1.0f, 0.0f) - }; - - private static Coord[] normals3 = - { - new Coord(0.25f, 0.4330127019f, 0.0f).Normalize(), - new Coord(-0.5f, 0.0f, 0.0f).Normalize(), - new Coord(0.25f, -0.4330127019f, 0.0f).Normalize(), - new Coord(0.25f, 0.4330127019f, 0.0f).Normalize() - }; - - private static Angle[] angles4 = - { - new Angle(0.0f, 1.0f, 0.0f), - new Angle(0.25f, 0.0f, 1.0f), - new Angle(0.5f, -1.0f, 0.0f), - new Angle(0.75f, 0.0f, -1.0f), - new Angle(1.0f, 1.0f, 0.0f) - }; - - private static Coord[] normals4 = - { - new Coord(0.5f, 0.5f, 0.0f).Normalize(), - new Coord(-0.5f, 0.5f, 0.0f).Normalize(), - new Coord(-0.5f, -0.5f, 0.0f).Normalize(), - new Coord(0.5f, -0.5f, 0.0f).Normalize(), - new Coord(0.5f, 0.5f, 0.0f).Normalize() - }; - - private static Angle[] angles24 = - { - new Angle(0.0f, 1.0f, 0.0f), - new Angle(0.041666666666666664f, 0.96592582628906831f, 0.25881904510252074f), - new Angle(0.083333333333333329f, 0.86602540378443871f, 0.5f), - new Angle(0.125f, 0.70710678118654757f, 0.70710678118654746f), - new Angle(0.16666666666666667f, 0.5f, 0.8660254037844386f), - new Angle(0.20833333333333331f, 0.25881904510252096f, 0.9659258262890682f), - new Angle(0.25f, 0.0f, 1.0f), - new Angle(0.29166666666666663f, -0.25881904510252063f, 0.96592582628906831f), - new Angle(0.33333333333333333f, -0.5f, 0.86602540378443871f), - new Angle(0.375f, -0.70710678118654746f, 0.70710678118654757f), - new Angle(0.41666666666666663f, -0.86602540378443849f, 0.5f), - new Angle(0.45833333333333331f, -0.9659258262890682f, 0.25881904510252102f), - new Angle(0.5f, -1.0f, 0.0f), - new Angle(0.54166666666666663f, -0.96592582628906842f, -0.25881904510252035f), - new Angle(0.58333333333333326f, -0.86602540378443882f, -0.5f), - new Angle(0.62499999999999989f, -0.70710678118654791f, -0.70710678118654713f), - new Angle(0.66666666666666667f, -0.5f, -0.86602540378443837f), - new Angle(0.70833333333333326f, -0.25881904510252152f, -0.96592582628906809f), - new Angle(0.75f, 0.0f, -1.0f), - new Angle(0.79166666666666663f, 0.2588190451025203f, -0.96592582628906842f), - new Angle(0.83333333333333326f, 0.5f, -0.86602540378443904f), - new Angle(0.875f, 0.70710678118654735f, -0.70710678118654768f), - new Angle(0.91666666666666663f, 0.86602540378443837f, -0.5f), - new Angle(0.95833333333333326f, 0.96592582628906809f, -0.25881904510252157f), - new Angle(1.0f, 1.0f, 0.0f) - }; - - private Angle interpolatePoints(float newPoint, Angle p1, Angle p2) - { - float m = (newPoint - p1.angle) / (p2.angle - p1.angle); - return new Angle(newPoint, p1.X + m * (p2.X - p1.X), p1.Y + m * (p2.Y - p1.Y)); - } - - private void intersection(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) - { // ref: http://local.wasp.uwa.edu.au/~pbourke/geometry/lineline2d/ - double denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1); - double uaNumerator = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3); - - if (denom != 0.0) - { - double ua = uaNumerator / denom; - iX = (float)(x1 + ua * (x2 - x1)); - iY = (float)(y1 + ua * (y2 - y1)); - } - } - - internal List angles; - internal List normals; - - internal void makeAngles(int sides, float startAngle, float stopAngle) - { - angles = new List(); - normals = new List(); - - double twoPi = System.Math.PI * 2.0; - float twoPiInv = 1.0f / (float)twoPi; - - if (sides < 1) - throw new Exception("number of sides not greater than zero"); - if (stopAngle <= startAngle) - throw new Exception("stopAngle not greater than startAngle"); - - if ((sides == 3 || sides == 4 || sides == 24)) - { - startAngle *= twoPiInv; - stopAngle *= twoPiInv; - - Angle[] sourceAngles; - if (sides == 3) - sourceAngles = angles3; - else if (sides == 4) - sourceAngles = angles4; - else sourceAngles = angles24; - - int startAngleIndex = (int)(startAngle * sides); - int endAngleIndex = sourceAngles.Length - 1; - if (stopAngle < 1.0f) - endAngleIndex = (int)(stopAngle * sides) + 1; - if (endAngleIndex == startAngleIndex) - endAngleIndex++; - - for (int angleIndex = startAngleIndex; angleIndex < endAngleIndex + 1; angleIndex++) - { - angles.Add(sourceAngles[angleIndex]); - if (sides == 3) - normals.Add(normals3[angleIndex]); - else if (sides == 4) - normals.Add(normals4[angleIndex]); - } - - if (startAngle > 0.0f) - angles[0] = interpolatePoints(startAngle, angles[0], angles[1]); - - if (stopAngle < 1.0f) - { - int lastAngleIndex = angles.Count - 1; - angles[lastAngleIndex] = interpolatePoints(stopAngle, angles[lastAngleIndex - 1], angles[lastAngleIndex]); - } - } - else - { - double stepSize = twoPi / sides; - - int startStep = (int)(startAngle / stepSize); - double angle = stepSize * startStep; - int step = startStep; - double stopAngleTest = stopAngle; - if (stopAngle < twoPi) - { - stopAngleTest = stepSize * ((int)(stopAngle / stepSize) + 1); - if (stopAngleTest < stopAngle) - stopAngleTest += stepSize; - if (stopAngleTest > twoPi) - stopAngleTest = twoPi; - } - - while (angle <= stopAngleTest) - { - Angle newAngle; - newAngle.angle = (float)angle; - newAngle.X = (float)System.Math.Cos(angle); - newAngle.Y = (float)System.Math.Sin(angle); - angles.Add(newAngle); - step += 1; - angle = stepSize * step; - } - - if (startAngle > angles[0].angle) - { - Angle newAngle; - intersection(angles[0].X, angles[0].Y, angles[1].X, angles[1].Y, 0.0f, 0.0f, (float)Math.Cos(startAngle), (float)Math.Sin(startAngle)); - newAngle.angle = startAngle; - newAngle.X = iX; - newAngle.Y = iY; - angles[0] = newAngle; - } - - int index = angles.Count - 1; - if (stopAngle < angles[index].angle) - { - Angle newAngle; - intersection(angles[index - 1].X, angles[index - 1].Y, angles[index].X, angles[index].Y, 0.0f, 0.0f, (float)Math.Cos(stopAngle), (float)Math.Sin(stopAngle)); - newAngle.angle = stopAngle; - newAngle.X = iX; - newAngle.Y = iY; - angles[index] = newAngle; - } - } - } - } - - /// - /// generates a profile for extrusion - /// - public class Profile - { - private const float twoPi = 2.0f * (float)Math.PI; - - public string errorMessage = null; - - public List coords; - public List faces; - public List vertexNormals; - public List us; - public List faceUVs; - public List faceNumbers; - - // use these for making individual meshes for each prim face - public List outerCoordIndices = null; - public List hollowCoordIndices = null; - public List cut1CoordIndices = null; - public List cut2CoordIndices = null; - - public Coord faceNormal = new Coord(0.0f, 0.0f, 1.0f); - public Coord cutNormal1 = new Coord(); - public Coord cutNormal2 = new Coord(); - - public int numOuterVerts = 0; - public int numHollowVerts = 0; - - public int outerFaceNumber = -1; - public int hollowFaceNumber = -1; - - public bool calcVertexNormals = false; - public int bottomFaceNumber = 0; - public int numPrimFaces = 0; - - public Profile() - { - this.coords = new List(); - this.faces = new List(); - this.vertexNormals = new List(); - this.us = new List(); - this.faceUVs = new List(); - this.faceNumbers = new List(); - } - - public Profile(int sides, float profileStart, float profileEnd, float hollow, int hollowSides, bool createFaces, bool calcVertexNormals) - { - this.calcVertexNormals = calcVertexNormals; - this.coords = new List(); - this.faces = new List(); - this.vertexNormals = new List(); - this.us = new List(); - this.faceUVs = new List(); - this.faceNumbers = new List(); - - Coord center = new Coord(0.0f, 0.0f, 0.0f); - - List hollowCoords = new List(); - List hollowNormals = new List(); - List hollowUs = new List(); - - if (calcVertexNormals) - { - this.outerCoordIndices = new List(); - this.hollowCoordIndices = new List(); - this.cut1CoordIndices = new List(); - this.cut2CoordIndices = new List(); - } - - bool hasHollow = (hollow > 0.0f); - - bool hasProfileCut = (profileStart > 0.0f || profileEnd < 1.0f); - - AngleList angles = new AngleList(); - AngleList hollowAngles = new AngleList(); - - float xScale = 0.5f; - float yScale = 0.5f; - if (sides == 4) // corners of a square are sqrt(2) from center - { - xScale = 0.707107f; - yScale = 0.707107f; - } - - float startAngle = profileStart * twoPi; - float stopAngle = profileEnd * twoPi; - - try { angles.makeAngles(sides, startAngle, stopAngle); } - catch (Exception ex) - { - - errorMessage = "makeAngles failed: Exception: " + ex.ToString() - + "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString(); - - return; - } - - this.numOuterVerts = angles.angles.Count; - - // flag to create as few triangles as possible for 3 or 4 side profile - bool simpleFace = (sides < 5 && !hasHollow && !hasProfileCut); - - if (hasHollow) - { - if (sides == hollowSides) - hollowAngles = angles; - else - { - try { hollowAngles.makeAngles(hollowSides, startAngle, stopAngle); } - catch (Exception ex) - { - errorMessage = "makeAngles failed: Exception: " + ex.ToString() - + "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString(); - - return; - } - } - this.numHollowVerts = hollowAngles.angles.Count; - } - else if (!simpleFace) - { - this.coords.Add(center); - if (this.calcVertexNormals) - this.vertexNormals.Add(new Coord(0.0f, 0.0f, 1.0f)); - this.us.Add(0.0f); - } - - float z = 0.0f; - - Angle angle; - Coord newVert = new Coord(); - if (hasHollow && hollowSides != sides) - { - int numHollowAngles = hollowAngles.angles.Count; - for (int i = 0; i < numHollowAngles; i++) - { - angle = hollowAngles.angles[i]; - newVert.X = hollow * xScale * angle.X; - newVert.Y = hollow * yScale * angle.Y; - newVert.Z = z; - - hollowCoords.Add(newVert); - if (this.calcVertexNormals) - { - if (hollowSides < 5) - hollowNormals.Add(hollowAngles.normals[i].Invert()); - else - hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f)); - - if (hollowSides == 4) - hollowUs.Add(angle.angle * hollow * 0.707107f); - else - hollowUs.Add(angle.angle * hollow); - } - } - } - - int index = 0; - int numAngles = angles.angles.Count; - - for (int i = 0; i < numAngles; i++) - { - angle = angles.angles[i]; - newVert.X = angle.X * xScale; - newVert.Y = angle.Y * yScale; - newVert.Z = z; - this.coords.Add(newVert); - if (this.calcVertexNormals) - { - this.outerCoordIndices.Add(this.coords.Count - 1); - - if (sides < 5) - { - this.vertexNormals.Add(angles.normals[i]); - float u = angle.angle; - this.us.Add(u); - } - else - { - this.vertexNormals.Add(new Coord(angle.X, angle.Y, 0.0f)); - this.us.Add(angle.angle); - } - } - - if (hasHollow) - { - if (hollowSides == sides) - { - newVert.X *= hollow; - newVert.Y *= hollow; - newVert.Z = z; - hollowCoords.Add(newVert); - if (this.calcVertexNormals) - { - if (sides < 5) - { - hollowNormals.Add(angles.normals[i].Invert()); - } - - else - hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f)); - - hollowUs.Add(angle.angle * hollow); - } - } - } - else if (!simpleFace && createFaces && angle.angle > 0.0001f) - { - Face newFace = new Face(); - newFace.v1 = 0; - newFace.v2 = index; - newFace.v3 = index + 1; - - this.faces.Add(newFace); - } - index += 1; - } - - if (hasHollow) - { - hollowCoords.Reverse(); - if (this.calcVertexNormals) - { - hollowNormals.Reverse(); - hollowUs.Reverse(); - } - - if (createFaces) - { - int numTotalVerts = this.numOuterVerts + this.numHollowVerts; - - if (this.numOuterVerts == this.numHollowVerts) - { - Face newFace = new Face(); - - for (int coordIndex = 0; coordIndex < this.numOuterVerts - 1; coordIndex++) - { - newFace.v1 = coordIndex; - newFace.v2 = coordIndex + 1; - newFace.v3 = numTotalVerts - coordIndex - 1; - this.faces.Add(newFace); - - newFace.v1 = coordIndex + 1; - newFace.v2 = numTotalVerts - coordIndex - 2; - newFace.v3 = numTotalVerts - coordIndex - 1; - this.faces.Add(newFace); - } - } - else - { - if (this.numOuterVerts < this.numHollowVerts) - { - Face newFace = new Face(); - int j = 0; // j is the index for outer vertices - int maxJ = this.numOuterVerts - 1; - for (int i = 0; i < this.numHollowVerts; i++) // i is the index for inner vertices - { - if (j < maxJ) - if (angles.angles[j + 1].angle - hollowAngles.angles[i].angle < hollowAngles.angles[i].angle - angles.angles[j].angle + 0.000001f) - { - newFace.v1 = numTotalVerts - i - 1; - newFace.v2 = j; - newFace.v3 = j + 1; - - this.faces.Add(newFace); - j += 1; - } - - newFace.v1 = j; - newFace.v2 = numTotalVerts - i - 2; - newFace.v3 = numTotalVerts - i - 1; - - this.faces.Add(newFace); - } - } - else // numHollowVerts < numOuterVerts - { - Face newFace = new Face(); - int j = 0; // j is the index for inner vertices - int maxJ = this.numHollowVerts - 1; - for (int i = 0; i < this.numOuterVerts; i++) - { - if (j < maxJ) - if (hollowAngles.angles[j + 1].angle - angles.angles[i].angle < angles.angles[i].angle - hollowAngles.angles[j].angle + 0.000001f) - { - newFace.v1 = i; - newFace.v2 = numTotalVerts - j - 2; - newFace.v3 = numTotalVerts - j - 1; - - this.faces.Add(newFace); - j += 1; - } - - newFace.v1 = numTotalVerts - j - 1; - newFace.v2 = i; - newFace.v3 = i + 1; - - this.faces.Add(newFace); - } - } - } - } - - if (calcVertexNormals) - { - foreach (Coord hc in hollowCoords) - { - this.coords.Add(hc); - hollowCoordIndices.Add(this.coords.Count - 1); - } - } - else - this.coords.AddRange(hollowCoords); - - if (this.calcVertexNormals) - { - this.vertexNormals.AddRange(hollowNormals); - this.us.AddRange(hollowUs); - - } - } - - if (simpleFace && createFaces) - { - if (sides == 3) - this.faces.Add(new Face(0, 1, 2)); - else if (sides == 4) - { - this.faces.Add(new Face(0, 1, 2)); - this.faces.Add(new Face(0, 2, 3)); - } - } - - if (calcVertexNormals && hasProfileCut) - { - int lastOuterVertIndex = this.numOuterVerts - 1; - - if (hasHollow) - { - this.cut1CoordIndices.Add(0); - this.cut1CoordIndices.Add(this.coords.Count - 1); - - this.cut2CoordIndices.Add(lastOuterVertIndex + 1); - this.cut2CoordIndices.Add(lastOuterVertIndex); - - this.cutNormal1.X = this.coords[0].Y - this.coords[this.coords.Count - 1].Y; - this.cutNormal1.Y = -(this.coords[0].X - this.coords[this.coords.Count - 1].X); - - this.cutNormal2.X = this.coords[lastOuterVertIndex + 1].Y - this.coords[lastOuterVertIndex].Y; - this.cutNormal2.Y = -(this.coords[lastOuterVertIndex + 1].X - this.coords[lastOuterVertIndex].X); - } - - else - { - this.cut1CoordIndices.Add(0); - this.cut1CoordIndices.Add(1); - - this.cut2CoordIndices.Add(lastOuterVertIndex); - this.cut2CoordIndices.Add(0); - - this.cutNormal1.X = this.vertexNormals[1].Y; - this.cutNormal1.Y = -this.vertexNormals[1].X; - - this.cutNormal2.X = -this.vertexNormals[this.vertexNormals.Count - 2].Y; - this.cutNormal2.Y = this.vertexNormals[this.vertexNormals.Count - 2].X; - - } - this.cutNormal1.Normalize(); - this.cutNormal2.Normalize(); - } - - this.MakeFaceUVs(); - - hollowCoords = null; - hollowNormals = null; - hollowUs = null; - - if (calcVertexNormals) - { // calculate prim face numbers - - // face number order is top, outer, hollow, bottom, start cut, end cut - // I know it's ugly but so is the whole concept of prim face numbers - - int faceNum = 1; // start with outer faces - this.outerFaceNumber = faceNum; - - int startVert = hasProfileCut && !hasHollow ? 1 : 0; - if (startVert > 0) - this.faceNumbers.Add(-1); - for (int i = 0; i < this.numOuterVerts - 1; i++) - this.faceNumbers.Add(sides < 5 && i <= sides ? faceNum++ : faceNum); - - this.faceNumbers.Add(hasProfileCut ? -1 : faceNum++); - - if (sides > 4 && (hasHollow || hasProfileCut)) - faceNum++; - - if (sides < 5 && (hasHollow || hasProfileCut) && this.numOuterVerts < sides) - faceNum++; - - if (hasHollow) - { - for (int i = 0; i < this.numHollowVerts; i++) - this.faceNumbers.Add(faceNum); - - this.hollowFaceNumber = faceNum++; - } - - this.bottomFaceNumber = faceNum++; - - if (hasHollow && hasProfileCut) - this.faceNumbers.Add(faceNum++); - - for (int i = 0; i < this.faceNumbers.Count; i++) - if (this.faceNumbers[i] == -1) - this.faceNumbers[i] = faceNum++; - - this.numPrimFaces = faceNum; - } - - } - - public void MakeFaceUVs() - { - this.faceUVs = new List(); - foreach (Coord c in this.coords) - this.faceUVs.Add(new UVCoord(1.0f - (0.5f + c.X), 1.0f - (0.5f - c.Y))); - } - - public Profile Copy() - { - return this.Copy(true); - } - - public Profile Copy(bool needFaces) - { - Profile copy = new Profile(); - - copy.coords.AddRange(this.coords); - copy.faceUVs.AddRange(this.faceUVs); - - if (needFaces) - copy.faces.AddRange(this.faces); - if ((copy.calcVertexNormals = this.calcVertexNormals) == true) - { - copy.vertexNormals.AddRange(this.vertexNormals); - copy.faceNormal = this.faceNormal; - copy.cutNormal1 = this.cutNormal1; - copy.cutNormal2 = this.cutNormal2; - copy.us.AddRange(this.us); - copy.faceNumbers.AddRange(this.faceNumbers); - - copy.cut1CoordIndices = new List(this.cut1CoordIndices); - copy.cut2CoordIndices = new List(this.cut2CoordIndices); - copy.hollowCoordIndices = new List(this.hollowCoordIndices); - copy.outerCoordIndices = new List(this.outerCoordIndices); - } - copy.numOuterVerts = this.numOuterVerts; - copy.numHollowVerts = this.numHollowVerts; - - return copy; - } - - public void AddPos(Coord v) - { - this.AddPos(v.X, v.Y, v.Z); - } - - public void AddPos(float x, float y, float z) - { - int i; - int numVerts = this.coords.Count; - Coord vert; - - for (i = 0; i < numVerts; i++) - { - vert = this.coords[i]; - vert.X += x; - vert.Y += y; - vert.Z += z; - this.coords[i] = vert; - } - } - - public void AddRot(Quat q) - { - int i; - int numVerts = this.coords.Count; - - for (i = 0; i < numVerts; i++) - this.coords[i] *= q; - - if (this.calcVertexNormals) - { - int numNormals = this.vertexNormals.Count; - for (i = 0; i < numNormals; i++) - this.vertexNormals[i] *= q; - - this.faceNormal *= q; - this.cutNormal1 *= q; - this.cutNormal2 *= q; - - } - } - - public void Scale(float x, float y) - { - int i; - int numVerts = this.coords.Count; - Coord vert; - - for (i = 0; i < numVerts; i++) - { - vert = this.coords[i]; - vert.X *= x; - vert.Y *= y; - this.coords[i] = vert; - } - } - - /// - /// Changes order of the vertex indices and negates the center vertex normal. Does not alter vertex normals of radial vertices - /// - public void FlipNormals() - { - int i; - int numFaces = this.faces.Count; - Face tmpFace; - int tmp; - - for (i = 0; i < numFaces; i++) - { - tmpFace = this.faces[i]; - tmp = tmpFace.v3; - tmpFace.v3 = tmpFace.v1; - tmpFace.v1 = tmp; - this.faces[i] = tmpFace; - } - - if (this.calcVertexNormals) - { - int normalCount = this.vertexNormals.Count; - if (normalCount > 0) - { - Coord n = this.vertexNormals[normalCount - 1]; - n.Z = -n.Z; - this.vertexNormals[normalCount - 1] = n; - } - } - - this.faceNormal.X = -this.faceNormal.X; - this.faceNormal.Y = -this.faceNormal.Y; - this.faceNormal.Z = -this.faceNormal.Z; - - int numfaceUVs = this.faceUVs.Count; - for (i = 0; i < numfaceUVs; i++) - { - UVCoord uv = this.faceUVs[i]; - uv.V = 1.0f - uv.V; - this.faceUVs[i] = uv; - } - } - - public void AddValue2FaceVertexIndices(int num) - { - int numFaces = this.faces.Count; - Face tmpFace; - for (int i = 0; i < numFaces; i++) - { - tmpFace = this.faces[i]; - tmpFace.v1 += num; - tmpFace.v2 += num; - tmpFace.v3 += num; - - this.faces[i] = tmpFace; - } - } - - public void AddValue2FaceNormalIndices(int num) - { - if (this.calcVertexNormals) - { - int numFaces = this.faces.Count; - Face tmpFace; - for (int i = 0; i < numFaces; i++) - { - tmpFace = this.faces[i]; - tmpFace.n1 += num; - tmpFace.n2 += num; - tmpFace.n3 += num; - - this.faces[i] = tmpFace; - } - } - } - - public void DumpRaw(String path, String name, String title) - { - if (path == null) - return; - String fileName = name + "_" + title + ".raw"; - String completePath = System.IO.Path.Combine(path, fileName); - StreamWriter sw = new StreamWriter(completePath); - - for (int i = 0; i < this.faces.Count; i++) - { - string s = this.coords[this.faces[i].v1].ToString(); - s += " " + this.coords[this.faces[i].v2].ToString(); - s += " " + this.coords[this.faces[i].v3].ToString(); - - sw.WriteLine(s); - } - - sw.Close(); - } - } - - public struct PathNode - { - public Coord position; - public Quat rotation; - public float xScale; - public float yScale; - public float percentOfPath; - } - - public enum PathType { Linear = 0, Circular = 1, Flexible = 2 } - - public class Path - { - public List pathNodes = new List(); - - public float twistBegin = 0.0f; - public float twistEnd = 0.0f; - public float topShearX = 0.0f; - public float topShearY = 0.0f; - public float pathCutBegin = 0.0f; - public float pathCutEnd = 1.0f; - public float dimpleBegin = 0.0f; - public float dimpleEnd = 1.0f; - public float skew = 0.0f; - public float holeSizeX = 1.0f; // called pathScaleX in pbs - public float holeSizeY = 0.25f; - public float taperX = 0.0f; - public float taperY = 0.0f; - public float radius = 0.0f; - public float revolutions = 1.0f; - public int stepsPerRevolution = 24; - - private const float twoPi = 2.0f * (float)Math.PI; - - public void Create(PathType pathType, int steps) - { - if (this.taperX > 0.999f) - this.taperX = 0.999f; - if (this.taperX < -0.999f) - this.taperX = -0.999f; - if (this.taperY > 0.999f) - this.taperY = 0.999f; - if (this.taperY < -0.999f) - this.taperY = -0.999f; - - if (pathType == PathType.Linear || pathType == PathType.Flexible) - { - int step = 0; - - float length = this.pathCutEnd - this.pathCutBegin; - float twistTotal = twistEnd - twistBegin; - float twistTotalAbs = Math.Abs(twistTotal); - if (twistTotalAbs > 0.01f) - steps += (int)(twistTotalAbs * 3.66); // dahlia's magic number - - float start = -0.5f; - float stepSize = length / (float)steps; - float percentOfPathMultiplier = stepSize * 0.999999f; - float xOffset = this.topShearX * this.pathCutBegin; - float yOffset = this.topShearY * this.pathCutBegin; - float zOffset = start; - float xOffsetStepIncrement = this.topShearX * length / steps; - float yOffsetStepIncrement = this.topShearY * length / steps; - - float percentOfPath = this.pathCutBegin; - zOffset += percentOfPath; - - // sanity checks - - bool done = false; - - while (!done) - { - PathNode newNode = new PathNode(); - - newNode.xScale = 1.0f; - if (this.taperX == 0.0f) - newNode.xScale = 1.0f; - else if (this.taperX > 0.0f) - newNode.xScale = 1.0f - percentOfPath * this.taperX; - else newNode.xScale = 1.0f + (1.0f - percentOfPath) * this.taperX; - - newNode.yScale = 1.0f; - if (this.taperY == 0.0f) - newNode.yScale = 1.0f; - else if (this.taperY > 0.0f) - newNode.yScale = 1.0f - percentOfPath * this.taperY; - else newNode.yScale = 1.0f + (1.0f - percentOfPath) * this.taperY; - - float twist = twistBegin + twistTotal * percentOfPath; - - newNode.rotation = new Quat(new Coord(0.0f, 0.0f, 1.0f), twist); - newNode.position = new Coord(xOffset, yOffset, zOffset); - newNode.percentOfPath = percentOfPath; - - pathNodes.Add(newNode); - - if (step < steps) - { - step += 1; - percentOfPath += percentOfPathMultiplier; - xOffset += xOffsetStepIncrement; - yOffset += yOffsetStepIncrement; - zOffset += stepSize; - if (percentOfPath > this.pathCutEnd) - done = true; - } - else done = true; - } - } // end of linear path code - - else // pathType == Circular - { - float twistTotal = twistEnd - twistBegin; - - // if the profile has a lot of twist, add more layers otherwise the layers may overlap - // and the resulting mesh may be quite inaccurate. This method is arbitrary and doesn't - // accurately match the viewer - float twistTotalAbs = Math.Abs(twistTotal); - if (twistTotalAbs > 0.01f) - { - if (twistTotalAbs > Math.PI * 1.5f) - steps *= 2; - if (twistTotalAbs > Math.PI * 3.0f) - steps *= 2; - } - - float yPathScale = this.holeSizeY * 0.5f; - float pathLength = this.pathCutEnd - this.pathCutBegin; - float totalSkew = this.skew * 2.0f * pathLength; - float skewStart = this.pathCutBegin * 2.0f * this.skew - this.skew; - float xOffsetTopShearXFactor = this.topShearX * (0.25f + 0.5f * (0.5f - this.holeSizeY)); - float yShearCompensation = 1.0f + Math.Abs(this.topShearY) * 0.25f; - - // It's not quite clear what pushY (Y top shear) does, but subtracting it from the start and end - // angles appears to approximate it's effects on path cut. Likewise, adding it to the angle used - // to calculate the sine for generating the path radius appears to approximate it's effects there - // too, but there are some subtle differences in the radius which are noticeable as the prim size - // increases and it may affect megaprims quite a bit. The effect of the Y top shear parameter on - // the meshes generated with this technique appear nearly identical in shape to the same prims when - // displayed by the viewer. - - float startAngle = (twoPi * this.pathCutBegin * this.revolutions) - this.topShearY * 0.9f; - float endAngle = (twoPi * this.pathCutEnd * this.revolutions) - this.topShearY * 0.9f; - float stepSize = twoPi / this.stepsPerRevolution; - - int step = (int)(startAngle / stepSize); - float angle = startAngle; - - bool done = false; - while (!done) // loop through the length of the path and add the layers - { - PathNode newNode = new PathNode(); - - float xProfileScale = (1.0f - Math.Abs(this.skew)) * this.holeSizeX; - float yProfileScale = this.holeSizeY; - - float percentOfPath = angle / (twoPi * this.revolutions); - float percentOfAngles = (angle - startAngle) / (endAngle - startAngle); - - if (this.taperX > 0.01f) - xProfileScale *= 1.0f - percentOfPath * this.taperX; - else if (this.taperX < -0.01f) - xProfileScale *= 1.0f + (1.0f - percentOfPath) * this.taperX; - - if (this.taperY > 0.01f) - yProfileScale *= 1.0f - percentOfPath * this.taperY; - else if (this.taperY < -0.01f) - yProfileScale *= 1.0f + (1.0f - percentOfPath) * this.taperY; - - newNode.xScale = xProfileScale; - newNode.yScale = yProfileScale; - - float radiusScale = 1.0f; - if (this.radius > 0.001f) - radiusScale = 1.0f - this.radius * percentOfPath; - else if (this.radius < 0.001f) - radiusScale = 1.0f + this.radius * (1.0f - percentOfPath); - - float twist = twistBegin + twistTotal * percentOfPath; - - float xOffset = 0.5f * (skewStart + totalSkew * percentOfAngles); - xOffset += (float)Math.Sin(angle) * xOffsetTopShearXFactor; - - float yOffset = yShearCompensation * (float)Math.Cos(angle) * (0.5f - yPathScale) * radiusScale; - - float zOffset = (float)Math.Sin(angle + this.topShearY) * (0.5f - yPathScale) * radiusScale; - - newNode.position = new Coord(xOffset, yOffset, zOffset); - - // now orient the rotation of the profile layer relative to it's position on the path - // adding taperY to the angle used to generate the quat appears to approximate the viewer - - newNode.rotation = new Quat(new Coord(1.0f, 0.0f, 0.0f), angle + this.topShearY); - - // next apply twist rotation to the profile layer - if (twistTotal != 0.0f || twistBegin != 0.0f) - newNode.rotation *= new Quat(new Coord(0.0f, 0.0f, 1.0f), twist); - - newNode.percentOfPath = percentOfPath; - - pathNodes.Add(newNode); - - // calculate terms for next iteration - // calculate the angle for the next iteration of the loop - - if (angle >= endAngle - 0.01) - done = true; - else - { - step += 1; - angle = stepSize * step; - if (angle > endAngle) - angle = endAngle; - } - } - } - } - } - - public class PrimMesh - { - public string errorMessage = ""; - private const float twoPi = 2.0f * (float)Math.PI; - - public List coords; - public List normals; - public List faces; - - public List viewerFaces; - - private int sides = 4; - private int hollowSides = 4; - private float profileStart = 0.0f; - private float profileEnd = 1.0f; - private float hollow = 0.0f; - public int twistBegin = 0; - public int twistEnd = 0; - public float topShearX = 0.0f; - public float topShearY = 0.0f; - public float pathCutBegin = 0.0f; - public float pathCutEnd = 1.0f; - public float dimpleBegin = 0.0f; - public float dimpleEnd = 1.0f; - public float skew = 0.0f; - public float holeSizeX = 1.0f; // called pathScaleX in pbs - public float holeSizeY = 0.25f; - public float taperX = 0.0f; - public float taperY = 0.0f; - public float radius = 0.0f; - public float revolutions = 1.0f; - public int stepsPerRevolution = 24; - - private int profileOuterFaceNumber = -1; - private int profileHollowFaceNumber = -1; - - private bool hasProfileCut = false; - private bool hasHollow = false; - public bool calcVertexNormals = false; - private bool normalsProcessed = false; - public bool viewerMode = false; - public bool sphereMode = false; - - public int numPrimFaces = 0; - - /// - /// Human readable string representation of the parameters used to create a mesh. - /// - /// - public string ParamsToDisplayString() - { - string s = ""; - s += "sides..................: " + this.sides.ToString(); - s += "\nhollowSides..........: " + this.hollowSides.ToString(); - s += "\nprofileStart.........: " + this.profileStart.ToString(); - s += "\nprofileEnd...........: " + this.profileEnd.ToString(); - s += "\nhollow...............: " + this.hollow.ToString(); - s += "\ntwistBegin...........: " + this.twistBegin.ToString(); - s += "\ntwistEnd.............: " + this.twistEnd.ToString(); - s += "\ntopShearX............: " + this.topShearX.ToString(); - s += "\ntopShearY............: " + this.topShearY.ToString(); - s += "\npathCutBegin.........: " + this.pathCutBegin.ToString(); - s += "\npathCutEnd...........: " + this.pathCutEnd.ToString(); - s += "\ndimpleBegin..........: " + this.dimpleBegin.ToString(); - s += "\ndimpleEnd............: " + this.dimpleEnd.ToString(); - s += "\nskew.................: " + this.skew.ToString(); - s += "\nholeSizeX............: " + this.holeSizeX.ToString(); - s += "\nholeSizeY............: " + this.holeSizeY.ToString(); - s += "\ntaperX...............: " + this.taperX.ToString(); - s += "\ntaperY...............: " + this.taperY.ToString(); - s += "\nradius...............: " + this.radius.ToString(); - s += "\nrevolutions..........: " + this.revolutions.ToString(); - s += "\nstepsPerRevolution...: " + this.stepsPerRevolution.ToString(); - s += "\nsphereMode...........: " + this.sphereMode.ToString(); - s += "\nhasProfileCut........: " + this.hasProfileCut.ToString(); - s += "\nhasHollow............: " + this.hasHollow.ToString(); - s += "\nviewerMode...........: " + this.viewerMode.ToString(); - - return s; - } - - public int ProfileOuterFaceNumber - { - get { return profileOuterFaceNumber; } - } - - public int ProfileHollowFaceNumber - { - get { return profileHollowFaceNumber; } - } - - public bool HasProfileCut - { - get { return hasProfileCut; } - } - - public bool HasHollow - { - get { return hasHollow; } - } - - - /// - /// Constructs a PrimMesh object and creates the profile for extrusion. - /// - /// - /// - /// - /// - /// - public PrimMesh(int sides, float profileStart, float profileEnd, float hollow, int hollowSides) - { - this.coords = new List(); - this.faces = new List(); - - this.sides = sides; - this.profileStart = profileStart; - this.profileEnd = profileEnd; - this.hollow = hollow; - this.hollowSides = hollowSides; - - if (sides < 3) - this.sides = 3; - if (hollowSides < 3) - this.hollowSides = 3; - if (profileStart < 0.0f) - this.profileStart = 0.0f; - if (profileEnd > 1.0f) - this.profileEnd = 1.0f; - if (profileEnd < 0.02f) - this.profileEnd = 0.02f; - if (profileStart >= profileEnd) - this.profileStart = profileEnd - 0.02f; - if (hollow > 0.99f) - this.hollow = 0.99f; - if (hollow < 0.0f) - this.hollow = 0.0f; - } - - /// - /// Extrudes a profile along a path. - /// - public void Extrude(PathType pathType) - { - bool needEndFaces = false; - - this.coords = new List(); - this.faces = new List(); - - if (this.viewerMode) - { - this.viewerFaces = new List(); - this.calcVertexNormals = true; - } - - if (this.calcVertexNormals) - this.normals = new List(); - - int steps = 1; - - float length = this.pathCutEnd - this.pathCutBegin; - normalsProcessed = false; - - if (this.viewerMode && this.sides == 3) - { - // prisms don't taper well so add some vertical resolution - // other prims may benefit from this but just do prisms for now - if (Math.Abs(this.taperX) > 0.01 || Math.Abs(this.taperY) > 0.01) - steps = (int)(steps * 4.5 * length); - } - - if (this.sphereMode) - this.hasProfileCut = this.profileEnd - this.profileStart < 0.4999f; - else - this.hasProfileCut = this.profileEnd - this.profileStart < 0.9999f; - this.hasHollow = (this.hollow > 0.001f); - - float twistBegin = this.twistBegin / 360.0f * twoPi; - float twistEnd = this.twistEnd / 360.0f * twoPi; - float twistTotal = twistEnd - twistBegin; - float twistTotalAbs = Math.Abs(twistTotal); - if (twistTotalAbs > 0.01f) - steps += (int)(twistTotalAbs * 3.66); // dahlia's magic number - - float hollow = this.hollow; - - if (pathType == PathType.Circular) - { - needEndFaces = false; - if (this.pathCutBegin != 0.0f || this.pathCutEnd != 1.0f) - needEndFaces = true; - else if (this.taperX != 0.0f || this.taperY != 0.0f) - needEndFaces = true; - else if (this.skew != 0.0f) - needEndFaces = true; - else if (twistTotal != 0.0f) - needEndFaces = true; - else if (this.radius != 0.0f) - needEndFaces = true; - } - else needEndFaces = true; - - // sanity checks - float initialProfileRot = 0.0f; - if (pathType == PathType.Circular) - { - if (this.sides == 3) - { - initialProfileRot = (float)Math.PI; - if (this.hollowSides == 4) - { - if (hollow > 0.7f) - hollow = 0.7f; - hollow *= 0.707f; - } - else hollow *= 0.5f; - } - else if (this.sides == 4) - { - initialProfileRot = 0.25f * (float)Math.PI; - if (this.hollowSides != 4) - hollow *= 0.707f; - } - else if (this.sides > 4) - { - initialProfileRot = (float)Math.PI; - if (this.hollowSides == 4) - { - if (hollow > 0.7f) - hollow = 0.7f; - hollow /= 0.7f; - } - } - } - else - { - if (this.sides == 3) - { - if (this.hollowSides == 4) - { - if (hollow > 0.7f) - hollow = 0.7f; - hollow *= 0.707f; - } - else hollow *= 0.5f; - } - else if (this.sides == 4) - { - initialProfileRot = 1.25f * (float)Math.PI; - if (this.hollowSides != 4) - hollow *= 0.707f; - } - else if (this.sides == 24 && this.hollowSides == 4) - hollow *= 1.414f; - } - - Profile profile = new Profile(this.sides, this.profileStart, this.profileEnd, hollow, this.hollowSides, true, calcVertexNormals); - this.errorMessage = profile.errorMessage; - - this.numPrimFaces = profile.numPrimFaces; - - int cut1FaceNumber = profile.bottomFaceNumber + 1; - int cut2FaceNumber = cut1FaceNumber + 1; - if (!needEndFaces) - { - cut1FaceNumber -= 2; - cut2FaceNumber -= 2; - } - - profileOuterFaceNumber = profile.outerFaceNumber; - if (!needEndFaces) - profileOuterFaceNumber--; - - if (hasHollow) - { - profileHollowFaceNumber = profile.hollowFaceNumber; - if (!needEndFaces) - profileHollowFaceNumber--; - } - - int cut1Vert = -1; - int cut2Vert = -1; - if (hasProfileCut) - { - cut1Vert = hasHollow ? profile.coords.Count - 1 : 0; - cut2Vert = hasHollow ? profile.numOuterVerts - 1 : profile.numOuterVerts; - } - - if (initialProfileRot != 0.0f) - { - profile.AddRot(new Quat(new Coord(0.0f, 0.0f, 1.0f), initialProfileRot)); - if (viewerMode) - profile.MakeFaceUVs(); - } - - Coord lastCutNormal1 = new Coord(); - Coord lastCutNormal2 = new Coord(); - float thisV = 0.0f; - float lastV = 0.0f; - - Path path = new Path(); - path.twistBegin = twistBegin; - path.twistEnd = twistEnd; - path.topShearX = topShearX; - path.topShearY = topShearY; - path.pathCutBegin = pathCutBegin; - path.pathCutEnd = pathCutEnd; - path.dimpleBegin = dimpleBegin; - path.dimpleEnd = dimpleEnd; - path.skew = skew; - path.holeSizeX = holeSizeX; - path.holeSizeY = holeSizeY; - path.taperX = taperX; - path.taperY = taperY; - path.radius = radius; - path.revolutions = revolutions; - path.stepsPerRevolution = stepsPerRevolution; - - path.Create(pathType, steps); - - for (int nodeIndex = 0; nodeIndex < path.pathNodes.Count; nodeIndex++) - { - PathNode node = path.pathNodes[nodeIndex]; - Profile newLayer = profile.Copy(); - newLayer.Scale(node.xScale, node.yScale); - - newLayer.AddRot(node.rotation); - newLayer.AddPos(node.position); - - if (needEndFaces && nodeIndex == 0) - { - newLayer.FlipNormals(); - - // add the bottom faces to the viewerFaces list - if (this.viewerMode) - { - Coord faceNormal = newLayer.faceNormal; - ViewerFace newViewerFace = new ViewerFace(profile.bottomFaceNumber); - int numFaces = newLayer.faces.Count; - List faces = newLayer.faces; - - for (int i = 0; i < numFaces; i++) - { - Face face = faces[i]; - newViewerFace.v1 = newLayer.coords[face.v1]; - newViewerFace.v2 = newLayer.coords[face.v2]; - newViewerFace.v3 = newLayer.coords[face.v3]; - - newViewerFace.coordIndex1 = face.v1; - newViewerFace.coordIndex2 = face.v2; - newViewerFace.coordIndex3 = face.v3; - - newViewerFace.n1 = faceNormal; - newViewerFace.n2 = faceNormal; - newViewerFace.n3 = faceNormal; - - newViewerFace.uv1 = newLayer.faceUVs[face.v1]; - newViewerFace.uv2 = newLayer.faceUVs[face.v2]; - newViewerFace.uv3 = newLayer.faceUVs[face.v3]; - - if (pathType == PathType.Linear) - { - newViewerFace.uv1.Flip(); - newViewerFace.uv2.Flip(); - newViewerFace.uv3.Flip(); - } - - this.viewerFaces.Add(newViewerFace); - } - } - } // if (nodeIndex == 0) - - // append this layer - - int coordsLen = this.coords.Count; - newLayer.AddValue2FaceVertexIndices(coordsLen); - - this.coords.AddRange(newLayer.coords); - - if (this.calcVertexNormals) - { - newLayer.AddValue2FaceNormalIndices(this.normals.Count); - this.normals.AddRange(newLayer.vertexNormals); - } - - if (node.percentOfPath < this.pathCutBegin + 0.01f || node.percentOfPath > this.pathCutEnd - 0.01f) - this.faces.AddRange(newLayer.faces); - - // fill faces between layers - - int numVerts = newLayer.coords.Count; - Face newFace1 = new Face(); - Face newFace2 = new Face(); - - thisV = 1.0f - node.percentOfPath; - - if (nodeIndex > 0) - { - int startVert = coordsLen + 1; - int endVert = this.coords.Count; - - if (sides < 5 || this.hasProfileCut || this.hasHollow) - startVert--; - - for (int i = startVert; i < endVert; i++) - { - int iNext = i + 1; - if (i == endVert - 1) - iNext = startVert; - - int whichVert = i - startVert; - - newFace1.v1 = i; - newFace1.v2 = i - numVerts; - newFace1.v3 = iNext; - - newFace1.n1 = newFace1.v1; - newFace1.n2 = newFace1.v2; - newFace1.n3 = newFace1.v3; - this.faces.Add(newFace1); - - newFace2.v1 = iNext; - newFace2.v2 = i - numVerts; - newFace2.v3 = iNext - numVerts; - - newFace2.n1 = newFace2.v1; - newFace2.n2 = newFace2.v2; - newFace2.n3 = newFace2.v3; - this.faces.Add(newFace2); - - if (this.viewerMode) - { - // add the side faces to the list of viewerFaces here - - int primFaceNum = profile.faceNumbers[whichVert]; - if (!needEndFaces) - primFaceNum -= 1; - - ViewerFace newViewerFace1 = new ViewerFace(primFaceNum); - ViewerFace newViewerFace2 = new ViewerFace(primFaceNum); - - int uIndex = whichVert; - if (!hasHollow && sides > 4 && uIndex < newLayer.us.Count - 1) - { - uIndex++; - } - - float u1 = newLayer.us[uIndex]; - float u2 = 1.0f; - if (uIndex < (int)newLayer.us.Count - 1) - u2 = newLayer.us[uIndex + 1]; - - if (whichVert == cut1Vert || whichVert == cut2Vert) - { - u1 = 0.0f; - u2 = 1.0f; - } - else if (sides < 5) - { - if (whichVert < profile.numOuterVerts) - { // boxes and prisms have one texture face per side of the prim, so the U values have to be scaled - // to reflect the entire texture width - u1 *= sides; - u2 *= sides; - u2 -= (int)u1; - u1 -= (int)u1; - if (u2 < 0.1f) - u2 = 1.0f; - } - } - - if (this.sphereMode) - { - if (whichVert != cut1Vert && whichVert != cut2Vert) - { - u1 = u1 * 2.0f - 1.0f; - u2 = u2 * 2.0f - 1.0f; - - if (whichVert >= newLayer.numOuterVerts) - { - u1 -= hollow; - u2 -= hollow; - } - - } - } - - newViewerFace1.uv1.U = u1; - newViewerFace1.uv2.U = u1; - newViewerFace1.uv3.U = u2; - - newViewerFace1.uv1.V = thisV; - newViewerFace1.uv2.V = lastV; - newViewerFace1.uv3.V = thisV; - - newViewerFace2.uv1.U = u2; - newViewerFace2.uv2.U = u1; - newViewerFace2.uv3.U = u2; - - newViewerFace2.uv1.V = thisV; - newViewerFace2.uv2.V = lastV; - newViewerFace2.uv3.V = lastV; - - newViewerFace1.v1 = this.coords[newFace1.v1]; - newViewerFace1.v2 = this.coords[newFace1.v2]; - newViewerFace1.v3 = this.coords[newFace1.v3]; - - newViewerFace2.v1 = this.coords[newFace2.v1]; - newViewerFace2.v2 = this.coords[newFace2.v2]; - newViewerFace2.v3 = this.coords[newFace2.v3]; - - newViewerFace1.coordIndex1 = newFace1.v1; - newViewerFace1.coordIndex2 = newFace1.v2; - newViewerFace1.coordIndex3 = newFace1.v3; - - newViewerFace2.coordIndex1 = newFace2.v1; - newViewerFace2.coordIndex2 = newFace2.v2; - newViewerFace2.coordIndex3 = newFace2.v3; - - // profile cut faces - if (whichVert == cut1Vert) - { - newViewerFace1.primFaceNumber = cut1FaceNumber; - newViewerFace2.primFaceNumber = cut1FaceNumber; - newViewerFace1.n1 = newLayer.cutNormal1; - newViewerFace1.n2 = newViewerFace1.n3 = lastCutNormal1; - - newViewerFace2.n1 = newViewerFace2.n3 = newLayer.cutNormal1; - newViewerFace2.n2 = lastCutNormal1; - } - else if (whichVert == cut2Vert) - { - newViewerFace1.primFaceNumber = cut2FaceNumber; - newViewerFace2.primFaceNumber = cut2FaceNumber; - newViewerFace1.n1 = newLayer.cutNormal2; - newViewerFace1.n2 = lastCutNormal2; - newViewerFace1.n3 = lastCutNormal2; - - newViewerFace2.n1 = newLayer.cutNormal2; - newViewerFace2.n3 = newLayer.cutNormal2; - newViewerFace2.n2 = lastCutNormal2; - } - - else // outer and hollow faces - { - if ((sides < 5 && whichVert < newLayer.numOuterVerts) || (hollowSides < 5 && whichVert >= newLayer.numOuterVerts)) - { // looks terrible when path is twisted... need vertex normals here - newViewerFace1.CalcSurfaceNormal(); - newViewerFace2.CalcSurfaceNormal(); - } - else - { - newViewerFace1.n1 = this.normals[newFace1.n1]; - newViewerFace1.n2 = this.normals[newFace1.n2]; - newViewerFace1.n3 = this.normals[newFace1.n3]; - - newViewerFace2.n1 = this.normals[newFace2.n1]; - newViewerFace2.n2 = this.normals[newFace2.n2]; - newViewerFace2.n3 = this.normals[newFace2.n3]; - } - } - - this.viewerFaces.Add(newViewerFace1); - this.viewerFaces.Add(newViewerFace2); - - } - } - } - - lastCutNormal1 = newLayer.cutNormal1; - lastCutNormal2 = newLayer.cutNormal2; - lastV = thisV; - - if (needEndFaces && nodeIndex == path.pathNodes.Count - 1 && viewerMode) - { - // add the top faces to the viewerFaces list here - Coord faceNormal = newLayer.faceNormal; - ViewerFace newViewerFace = new ViewerFace(0); - int numFaces = newLayer.faces.Count; - List faces = newLayer.faces; - - for (int i = 0; i < numFaces; i++) - { - Face face = faces[i]; - newViewerFace.v1 = newLayer.coords[face.v1 - coordsLen]; - newViewerFace.v2 = newLayer.coords[face.v2 - coordsLen]; - newViewerFace.v3 = newLayer.coords[face.v3 - coordsLen]; - - newViewerFace.coordIndex1 = face.v1 - coordsLen; - newViewerFace.coordIndex2 = face.v2 - coordsLen; - newViewerFace.coordIndex3 = face.v3 - coordsLen; - - newViewerFace.n1 = faceNormal; - newViewerFace.n2 = faceNormal; - newViewerFace.n3 = faceNormal; - - newViewerFace.uv1 = newLayer.faceUVs[face.v1 - coordsLen]; - newViewerFace.uv2 = newLayer.faceUVs[face.v2 - coordsLen]; - newViewerFace.uv3 = newLayer.faceUVs[face.v3 - coordsLen]; - - if (pathType == PathType.Linear) - { - newViewerFace.uv1.Flip(); - newViewerFace.uv2.Flip(); - newViewerFace.uv3.Flip(); - } - - this.viewerFaces.Add(newViewerFace); - } - } - - - } // for (int nodeIndex = 0; nodeIndex < path.pathNodes.Count; nodeIndex++) - - } - - - /// - /// DEPRICATED - use Extrude(PathType.Linear) instead - /// Extrudes a profile along a straight line path. Used for prim types box, cylinder, and prism. - /// - /// - public void ExtrudeLinear() - { - this.Extrude(PathType.Linear); - } - - - /// - /// DEPRICATED - use Extrude(PathType.Circular) instead - /// Extrude a profile into a circular path prim mesh. Used for prim types torus, tube, and ring. - /// - /// - public void ExtrudeCircular() - { - this.Extrude(PathType.Circular); - } - - - private Coord SurfaceNormal(Coord c1, Coord c2, Coord c3) - { - Coord edge1 = new Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z); - Coord edge2 = new Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z); - - Coord normal = Coord.Cross(edge1, edge2); - - normal.Normalize(); - - return normal; - } - - private Coord SurfaceNormal(Face face) - { - return SurfaceNormal(this.coords[face.v1], this.coords[face.v2], this.coords[face.v3]); - } - - /// - /// Calculate the surface normal for a face in the list of faces - /// - /// - /// - public Coord SurfaceNormal(int faceIndex) - { - int numFaces = this.faces.Count; - if (faceIndex < 0 || faceIndex >= numFaces) - throw new Exception("faceIndex out of range"); - - return SurfaceNormal(this.faces[faceIndex]); - } - - /// - /// Duplicates a PrimMesh object. All object properties are copied by value, including lists. - /// - /// - public PrimMesh Copy() - { - PrimMesh copy = new PrimMesh(this.sides, this.profileStart, this.profileEnd, this.hollow, this.hollowSides); - copy.twistBegin = this.twistBegin; - copy.twistEnd = this.twistEnd; - copy.topShearX = this.topShearX; - copy.topShearY = this.topShearY; - copy.pathCutBegin = this.pathCutBegin; - copy.pathCutEnd = this.pathCutEnd; - copy.dimpleBegin = this.dimpleBegin; - copy.dimpleEnd = this.dimpleEnd; - copy.skew = this.skew; - copy.holeSizeX = this.holeSizeX; - copy.holeSizeY = this.holeSizeY; - copy.taperX = this.taperX; - copy.taperY = this.taperY; - copy.radius = this.radius; - copy.revolutions = this.revolutions; - copy.stepsPerRevolution = this.stepsPerRevolution; - copy.calcVertexNormals = this.calcVertexNormals; - copy.normalsProcessed = this.normalsProcessed; - copy.viewerMode = this.viewerMode; - copy.numPrimFaces = this.numPrimFaces; - copy.errorMessage = this.errorMessage; - - copy.coords = new List(this.coords); - copy.faces = new List(this.faces); - copy.viewerFaces = new List(this.viewerFaces); - copy.normals = new List(this.normals); - - return copy; - } - - /// - /// Calculate surface normals for all of the faces in the list of faces in this mesh - /// - public void CalcNormals() - { - if (normalsProcessed) - return; - - normalsProcessed = true; - - int numFaces = faces.Count; - - if (!this.calcVertexNormals) - this.normals = new List(); - - for (int i = 0; i < numFaces; i++) - { - Face face = faces[i]; - - this.normals.Add(SurfaceNormal(i).Normalize()); - - int normIndex = normals.Count - 1; - face.n1 = normIndex; - face.n2 = normIndex; - face.n3 = normIndex; - - this.faces[i] = face; - } - } - - /// - /// Adds a value to each XYZ vertex coordinate in the mesh - /// - /// - /// - /// - public void AddPos(float x, float y, float z) - { - int i; - int numVerts = this.coords.Count; - Coord vert; - - for (i = 0; i < numVerts; i++) - { - vert = this.coords[i]; - vert.X += x; - vert.Y += y; - vert.Z += z; - this.coords[i] = vert; - } - - if (this.viewerFaces != null) - { - int numViewerFaces = this.viewerFaces.Count; - - for (i = 0; i < numViewerFaces; i++) - { - ViewerFace v = this.viewerFaces[i]; - v.AddPos(x, y, z); - this.viewerFaces[i] = v; - } - } - } - - /// - /// Rotates the mesh - /// - /// - public void AddRot(Quat q) - { - int i; - int numVerts = this.coords.Count; - - for (i = 0; i < numVerts; i++) - this.coords[i] *= q; - - if (this.normals != null) - { - int numNormals = this.normals.Count; - for (i = 0; i < numNormals; i++) - this.normals[i] *= q; - } - - if (this.viewerFaces != null) - { - int numViewerFaces = this.viewerFaces.Count; - - for (i = 0; i < numViewerFaces; i++) - { - ViewerFace v = this.viewerFaces[i]; - v.v1 *= q; - v.v2 *= q; - v.v3 *= q; - - v.n1 *= q; - v.n2 *= q; - v.n3 *= q; - this.viewerFaces[i] = v; - } - } - } - -#if VERTEX_INDEXER - public VertexIndexer GetVertexIndexer() - { - if (this.viewerMode && this.viewerFaces.Count > 0) - return new VertexIndexer(this); - return null; - } -#endif - - /// - /// Scales the mesh - /// - /// - /// - /// - public void Scale(float x, float y, float z) - { - int i; - int numVerts = this.coords.Count; - //Coord vert; - - Coord m = new Coord(x, y, z); - for (i = 0; i < numVerts; i++) - this.coords[i] *= m; - - if (this.viewerFaces != null) - { - int numViewerFaces = this.viewerFaces.Count; - for (i = 0; i < numViewerFaces; i++) - { - ViewerFace v = this.viewerFaces[i]; - v.v1 *= m; - v.v2 *= m; - v.v3 *= m; - this.viewerFaces[i] = v; - } - - } - - } - - /// - /// Dumps the mesh to a Blender compatible "Raw" format file - /// - /// - /// - /// - public void DumpRaw(String path, String name, String title) - { - if (path == null) - return; - String fileName = name + "_" + title + ".raw"; - String completePath = System.IO.Path.Combine(path, fileName); - StreamWriter sw = new StreamWriter(completePath); - - for (int i = 0; i < this.faces.Count; i++) - { - string s = this.coords[this.faces[i].v1].ToString(); - s += " " + this.coords[this.faces[i].v2].ToString(); - s += " " + this.coords[this.faces[i].v3].ToString(); - - sw.WriteLine(s); - } - - sw.Close(); - } - } -} -- cgit v1.1