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/* $Id:$ */
/*
libg3d - 3D object loading library
Copyright (C) 2005-2009 Markus Dahms <mad@automagically.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <g3d/vector.h>
#include <g3d/matrix.h>
#include <g3d/material.h>
#include "imp_blend_types.h"
#include "imp_blend_def.h"
#include "imp_blend_sdna.h"
/* mesh data */
gboolean blend_cb_DATA_ME(BlendGlobal *global, BlendLocal *local)
{
G3DFace *face;
BlendSdnaPropData *spdata;
gchar *stmp;
gint32 i, j;
if((local->ndata == 0) || (local->data[0] == NULL))
return TRUE;
g_return_val_if_fail(local->object != NULL, FALSE);
/* all structs in one DATA chunk have the same type */
if(strcmp(local->data[0]->sstruct->name, "MVert") == 0) {
local->object->vertex_count = local->ndata;
local->object->vertex_data = g3d_vector_new(3,
local->object->vertex_count);
for(i = 0; i < local->ndata; i ++) {
spdata = blend_sdna_get_property(local->data[i], "co", T_FLOAT);
if(spdata)
for(j = 0; j < 3; j ++)
local->object->vertex_data[i * 3 + j] = spdata->fval[j];
}
} else if(strcmp(local->data[0]->sstruct->name, "MFace") == 0) {
for(i = 0; i < local->ndata; i ++) {
face = g_new0(G3DFace, 1);
face->vertex_count = 4;
face->vertex_indices = g_new0(guint32, 4);
face->material = g_slist_nth_data(local->object->materials, 0);
local->object->faces = g_slist_prepend(local->object->faces, face);
for(j = 0; j < 4; j ++) {
stmp = g_strdup_printf("v%d", j);
spdata = blend_sdna_get_property(local->data[i], stmp, T_INT);
if(spdata)
face->vertex_indices[j] = spdata->ival[0];
g_free(stmp);
}
#if DEBUG > 2
g_debug("MFace: %03i (%02i, %02i, %02i, %02i)", i,
face->vertex_indices[0], face->vertex_indices[1],
face->vertex_indices[2], face->vertex_indices[3]);
#endif
spdata = blend_sdna_get_property(local->data[i], "mat_nr", T_CHAR);
/* TODO */
}
} else {
#if DEBUG > 0
for(i = 0; i < local->ndata; i ++)
blend_sdna_dump_data(local->data[i], 0);
#endif
}
return TRUE;
}
/* struct DNA */
gboolean blend_cb_DNA1(BlendGlobal *global, BlendLocal *local)
{
if(global->sdna != NULL)
return TRUE;
global->sdna = blend_sdna_read_dna1(global->stream,
global->flags, local->len);
if(global->sdna == NULL) {
g_warning("Blend: failed to read DNA1, giving up...");
return FALSE;
}
/* rewind stream to really read content */
g3d_stream_seek(global->stream, BLEND_HEADER_SIZE, G_SEEK_SET);
local->len = 0;
return TRUE;
}
static gchar *get_name_from_id(BlendSdnaData *sdata)
{
BlendSdnaPropData *spdata, *spdata2;
gchar *name = NULL;
gint32 i;
spdata = blend_sdna_get_property(sdata, "id", T_STRUCT);
if(spdata) {
spdata2 = blend_sdna_get_property(spdata->structval, "name", T_CHAR);
if(spdata2) {
name = g_new0(gchar, spdata2->sprop->nitems + 1);
for(i = 0; i < spdata2->sprop->nitems; i ++)
name[i] = spdata2->ival[i];
}
}
return name;
}
static G3DFloat get_float(BlendSdnaData *sdata, const gchar *var)
{
BlendSdnaPropData *spdata;
spdata = blend_sdna_get_property(sdata, var, T_FLOAT);
if(spdata)
return spdata->fval[0];
return 0.0;
}
/* material */
gboolean blend_cb_MA(BlendGlobal *global, BlendLocal *local)
{
G3DMaterial *material;
g_return_val_if_fail(local->data[0] != NULL, FALSE);
#if DEBUG > 0
blend_sdna_dump_data(local->data[0], 0);
#endif
material = g3d_material_new();
material->name = get_name_from_id(local->data[0]);
global->model->materials = g_slist_append(global->model->materials,
material);
material->r = get_float(local->data[0], "r");
material->g = get_float(local->data[0], "g");
material->b = get_float(local->data[0], "b");
return TRUE;
}
/* mesh */
gboolean blend_cb_ME(BlendGlobal *global, BlendLocal *local)
{
G3DObject *object;
G3DMaterial *material;
G3DVector v[3];
BlendSdnaPropData *spdata;
gint32 i;
g_return_val_if_fail(local->data[0] != NULL, FALSE);
#if DEBUG > 0
blend_sdna_dump_data(local->data[0], 0);
#endif
object = g_new0(G3DObject, 1);
if(local->grpobject)
local->grpobject->objects = g_slist_append(local->grpobject->objects,
object);
else
global->model->objects = g_slist_append(global->model->objects,
object);
local->object = object;
material = g3d_material_new();
material->name = g_strdup("(default material)");
object->materials = g_slist_append(local->object->materials, material);
/* name */
object->name = get_name_from_id(local->data[0]);
object->transformation = g_new0(G3DTransformation, 1);
g3d_matrix_identity(object->transformation->matrix);
/* rotation */
spdata = blend_sdna_get_property(local->data[0], "rot", T_FLOAT);
if(spdata) {
for(i = 0; i < 3; i ++)
v[i] = spdata->fval[i];
g3d_matrix_rotate_xyz(v[0], v[1], v[2],
object->transformation->matrix);
#if DEBUG > 0
g_debug("ME: rotate %f, %f, %f", v[0], v[1], v[2]);
#endif
}
/* size */
spdata = blend_sdna_get_property(local->data[0], "size", T_FLOAT);
if(spdata) {
for(i = 0; i < 3; i ++)
v[i] = spdata->fval[i];
g3d_matrix_scale(v[0], v[1], v[2], object->transformation->matrix);
#if DEBUG > 2
g_debug("ME: scale %f, %f, %f", v[0], v[1], v[2]);
#endif
}
/* location */
spdata = blend_sdna_get_property(local->data[0], "loc", T_FLOAT);
if(spdata) {
for(i = 0; i < 3; i ++)
v[i] = spdata->fval[i];
g3d_matrix_translate(v[0], v[1], v[2],
object->transformation->matrix);
#if DEBUG > 2
g_debug("ME: translate %f, %f, %f", v[0], v[1], v[2]);
#endif
}
return TRUE;
}
gboolean blend_cb_OB(BlendGlobal *global, BlendLocal *local)
{
G3DObject *object;
g_return_val_if_fail(local->data[0] != NULL, FALSE);
#if DEBUG > 0
blend_sdna_dump_data(local->data[0], 0);
#endif
object = g_new0(G3DObject, 1);
object->name = get_name_from_id(local->data[0]);
local->grpobject = object;
global->model->objects = g_slist_append(global->model->objects, object);
return TRUE;
}
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