From 62f3e11b4e3a085e946383b84e8735830d732abf Mon Sep 17 00:00:00 2001 From: Dahlia Trimble Date: Fri, 10 Oct 2008 09:16:36 +0000 Subject: Some more decrufting --- OpenSim/Region/Physics/Meshing/Meshmerizer.cs | 138 ++++++-------------------- 1 file changed, 30 insertions(+), 108 deletions(-) (limited to 'OpenSim/Region/Physics') diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs index 8a43fa5..311db79 100644 --- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs +++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs @@ -69,36 +69,35 @@ namespace OpenSim.Region.Physics.Meshing private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh -// TODO: unused -// private static void IntersectionParameterPD(PhysicsVector p1, PhysicsVector r1, PhysicsVector p2, -// PhysicsVector r2, ref float lambda, ref float mu) -// { -// // p1, p2, points on the straight -// // r1, r2, directional vectors of the straight. Not necessarily of length 1! -// // note, that l, m can be scaled such, that the range 0..1 is mapped to the area between two points, -// // thus allowing to decide whether an intersection is between two points - -// float r1x = r1.X; -// float r1y = r1.Y; -// float r2x = r2.X; -// float r2y = r2.Y; - -// float denom = r1y*r2x - r1x*r2y; - -// if (denom == 0.0) -// { -// lambda = Single.NaN; -// mu = Single.NaN; -// return; -// } - -// float p1x = p1.X; -// float p1y = p1.Y; -// float p2x = p2.X; -// float p2y = p2.Y; -// lambda = (-p2x*r2y + p1x*r2y + (p2y - p1y)*r2x)/denom; -// mu = (-p2x*r1y + p1x*r1y + (p2y - p1y)*r1x)/denom; -// } + private static void IntersectionParameterPD(PhysicsVector p1, PhysicsVector r1, PhysicsVector p2, + PhysicsVector r2, ref float lambda, ref float mu) + { + // p1, p2, points on the straight + // r1, r2, directional vectors of the straight. Not necessarily of length 1! + // note, that l, m can be scaled such, that the range 0..1 is mapped to the area between two points, + // thus allowing to decide whether an intersection is between two points + + float r1x = r1.X; + float r1y = r1.Y; + float r2x = r2.X; + float r2y = r2.Y; + + float denom = r1y * r2x - r1x * r2y; + + if (denom == 0.0) + { + lambda = Single.NaN; + mu = Single.NaN; + return; + } + + float p1x = p1.X; + float p1y = p1.Y; + float p2x = p2.X; + float p2y = p2.Y; + lambda = (-p2x * r2y + p1x * r2y + (p2y - p1y) * r2x) / denom; + mu = (-p2x * r1y + p1x * r1y + (p2y - p1y) * r1x) / denom; + } private static List FindInfluencedTriangles(List triangles, Vertex v) { @@ -432,18 +431,11 @@ namespace OpenSim.Region.Physics.Meshing UInt16 taperY = primShape.PathScaleY; UInt16 pathShearX = primShape.PathShearX; UInt16 pathShearY = primShape.PathShearY; - // Int16 twistTop = primShape.PathTwistBegin; - // Int16 twistBot = primShape.PathTwist; #if SPAM reportPrimParams("[BOX] " + primName, primShape); #endif - //m_log.Error("pathShear:" + primShape.PathShearX.ToString() + "," + primShape.PathShearY.ToString()); - //m_log.Error("pathTaper:" + primShape.PathTaperX.ToString() + "," + primShape.PathTaperY.ToString()); - //m_log.Error("ProfileBegin:" + primShape.ProfileBegin.ToString() + "," + primShape.ProfileBegin.ToString()); - //m_log.Error("PathScale:" + primShape.PathScaleX.ToString() + "," + primShape.PathScaleY.ToString()); - // Procedure: This is based on the fact that the upper (plus) and lower (minus) Z-surface // of a block are basically the same // They may be warped differently but the shape is identical @@ -575,12 +567,10 @@ namespace OpenSim.Region.Physics.Meshing if (taperX > 100) { extr.taperTopFactorX = 1.0f - ((float)(taperX - 100) / 100); - //System.Console.WriteLine("taperTopFactorX: " + extr.taperTopFactorX.ToString()); } else { extr.taperBotFactorX = 1.0f - ((100 - (float)taperX) / 100); - //System.Console.WriteLine("taperBotFactorX: " + extr.taperBotFactorX.ToString()); } } @@ -590,12 +580,10 @@ namespace OpenSim.Region.Physics.Meshing if (taperY > 100) { extr.taperTopFactorY = 1.0f - ((float)(taperY - 100) / 100); - //System.Console.WriteLine("taperTopFactorY: " + extr.taperTopFactorY.ToString()); } else { extr.taperBotFactorY = 1.0f - ((100 - (float)taperY) / 100); - //System.Console.WriteLine("taperBotFactorY: " + extr.taperBotFactorY.ToString()); } } @@ -1595,63 +1583,6 @@ namespace OpenSim.Region.Physics.Meshing return result; } - public static void CalcNormals(Mesh mesh) - { - int iTriangles = mesh.triangles.Count; - - mesh.normals = new float[iTriangles * 3]; - - int i = 0; - foreach (Triangle t in mesh.triangles) - { - float ux, uy, uz; - float vx, vy, vz; - float wx, wy, wz; - - ux = t.v1.X; - uy = t.v1.Y; - uz = t.v1.Z; - - vx = t.v2.X; - vy = t.v2.Y; - vz = t.v2.Z; - - wx = t.v3.X; - wy = t.v3.Y; - wz = t.v3.Z; - - - // Vectors for edges - float e1x, e1y, e1z; - float e2x, e2y, e2z; - - e1x = ux - vx; - e1y = uy - vy; - e1z = uz - vz; - - e2x = ux - wx; - e2y = uy - wy; - e2z = uz - wz; - - - // Cross product for normal - float nx, ny, nz; - nx = e1y * e2z - e1z * e2y; - ny = e1z * e2x - e1x * e2z; - nz = e1x * e2y - e1y * e2x; - - // Length - float l = (float)Math.Sqrt(nx * nx + ny * ny + nz * nz); - - // Normalized "normal" - nx /= l; - ny /= l; - nz /= l; - - i += 3; - } - } - public static Vertex midUnitRadialPoint(Vertex a, Vertex b, float radius) { Vertex midpoint = new Vertex(a + b) * 0.5f; @@ -1853,7 +1784,6 @@ namespace OpenSim.Region.Physics.Meshing { SculptMesh smesh = CreateSculptMesh(primName, primShape, size, lod); mesh = (Mesh)smesh; - //CalcNormals(mesh); } else if (usePrimMesher) @@ -1866,14 +1796,12 @@ namespace OpenSim.Region.Physics.Meshing { // its a box mesh = CreateBoxMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } else if (primShape.PathCurve == (byte)Extrusion.Curve1) { // tube // do a cylinder for now mesh = CreateCylinderMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } } else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.Circle) @@ -1882,15 +1810,13 @@ namespace OpenSim.Region.Physics.Meshing { mesh = CreateCylinderMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } // ProfileCurve seems to combine hole shape and profile curve so we need to only compare against the lower 3 bits else if (primShape.PathCurve == (byte) Extrusion.Curve1) { // dahlia's favorite, a torus :) mesh = CreateCircularPathMesh(primName, primShape, size); - //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); + //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod);\ } } else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.HalfCircle) @@ -1900,7 +1826,6 @@ namespace OpenSim.Region.Physics.Meshing //mesh = CreateSphereMesh(primName, primShape, size); mesh = CreateCircularPathMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } } else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.EquilateralTriangle) @@ -1909,20 +1834,17 @@ namespace OpenSim.Region.Physics.Meshing { mesh = CreatePrismMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } else if (primShape.PathCurve == (byte) Extrusion.Curve1) { // a ring - do a cylinder for now //mesh = CreateCylinderMesh(primName, primShape, size); mesh = CreateCircularPathMesh(primName, primShape, size); //mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod); - //CalcNormals(mesh); } } else // just do a box { mesh = CreateBoxMesh(primName, primShape, size); - //CalcNormals(mesh); } if (mesh != null) -- cgit v1.1