void compositor_extrude_text(GF_Node *node, GF_TraverseState *tr_state, GF_Mesh *mesh, MFVec3f *thespine, Fixed creaseAngle, Bool begin_cap, Bool end_cap, MFRotation *spine_ori, MFVec2f *spine_scale, Bool txAlongSpine)
{
u32 i, count;
Fixed min_cx, min_cy, width_cx, width_cy;
TextStack *st = (TextStack *) gf_node_get_private(node);
/*rebuild text node*/
if (gf_node_dirty_get(node)) {
ParentNode2D *parent = tr_state->parent;
tr_state->parent = NULL;
text_clean_paths(tr_state->visual->compositor, st);
drawable_reset_path(st->graph);
gf_node_dirty_clear(node, 0);
build_text(st, (M_Text *)node, tr_state);
tr_state->parent = parent;
}
min_cx = st->bounds.x;
min_cy = st->bounds.y - st->bounds.height;
width_cx = st->bounds.width;
width_cy = st->bounds.height;
mesh_reset(mesh);
count = gf_list_count(st->spans);
for (i=0; i<count; i++) {
GF_TextSpan *span = (GF_TextSpan *)gf_list_get(st->spans, i);
GF_Path *span_path = gf_font_span_create_path(span);
mesh_extrude_path_ext(mesh, span_path, thespine, creaseAngle, min_cx, min_cy, width_cx, width_cy, begin_cap, end_cap, spine_ori, spine_scale, txAlongSpine);
gf_path_del(span_path);
}
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void NLD_Apply(M_NonLinearDeformer *nld, GF_Mesh *mesh)
{
u32 i;
GF_Matrix mx;
SFVec3f n;
Fixed param, z_min, z_max, v_min, v_max, f_min, f_max, frac, val, a_cos, a_sin;
Bool needs_transform = NLD_GetMatrix(nld, &mx);
param = nld->param;
if (!param) param = 1;
if (mesh->bounds.min_edge.z == mesh->bounds.max_edge.z) return;
z_min = FIX_MAX;
z_max = -FIX_MAX;
if (needs_transform) {
for (i=0; i<mesh->v_count; i++) {
gf_mx_apply_vec(&mx, &mesh->vertices[i].pos);
MESH_GET_NORMAL(n, mesh->vertices[i]);
gf_mx_rotate_vector(&mx, &n);
MESH_SET_NORMAL(mesh->vertices[i], n);
if (mesh->vertices[i].pos.z<z_min) z_min = mesh->vertices[i].pos.z;
if (mesh->vertices[i].pos.z>z_max) z_max = mesh->vertices[i].pos.z;
}
} else {
z_min = mesh->bounds.min_edge.z;
z_max = mesh->bounds.max_edge.z;
}
for (i=0; i<mesh->v_count; i++) {
SFVec3f old = mesh->vertices[i].pos;
frac = gf_divfix(old.z - z_min, z_max - z_min);
NLD_GetKey(nld, frac, &f_min, &v_min, &f_max, &v_max);
if (f_max == f_min) {
val = v_min;
} else {
frac = gf_divfix(frac-f_min, f_max - f_min);
val = gf_mulfix(v_max - v_min, frac) + v_min;
}
val = gf_mulfix(val, param);
switch (nld->type) {
/*taper*/
case 0:
mesh->vertices[i].pos.x = gf_mulfix(mesh->vertices[i].pos.x, val);
mesh->vertices[i].pos.y = gf_mulfix(mesh->vertices[i].pos.y, val);
MESH_GET_NORMAL(old, mesh->vertices[i]);
n=old;
n.x = gf_mulfix(n.x, val);
n.y = gf_mulfix(n.y, val);
gf_vec_norm(&n);
MESH_SET_NORMAL(mesh->vertices[i], n);
break;
/*twist*/
case 1:
a_cos = gf_cos(val);
a_sin = gf_sin(val);
mesh->vertices[i].pos.x = gf_mulfix(a_cos, old.x) - gf_mulfix(a_sin, old.y);
mesh->vertices[i].pos.y = gf_mulfix(a_sin, old.x) + gf_mulfix(a_cos, old.y);
MESH_GET_NORMAL(old, mesh->vertices[i]);
n=old;
n.x = gf_mulfix(a_cos, old.x) - gf_mulfix(a_sin, old.y);
n.y = gf_mulfix(a_sin, old.x) + gf_mulfix(a_cos, old.y);
gf_vec_norm(&n);
MESH_SET_NORMAL(mesh->vertices[i], n);
break;
/*bend*/
case 2:
a_cos = gf_cos(val);
a_sin = gf_sin(val);
mesh->vertices[i].pos.x = gf_mulfix(a_sin, old.z) + gf_mulfix(a_cos, old.x);
mesh->vertices[i].pos.z = gf_mulfix(a_cos, old.z) - gf_mulfix(a_sin, old.x);
MESH_GET_NORMAL(old, mesh->vertices[i]);
n=old;
n.x = gf_mulfix(a_sin, old.z) + gf_mulfix(a_cos, old.x);
n.z = gf_mulfix(a_cos, old.z) - gf_mulfix(a_sin, old.x);
gf_vec_norm(&n);
MESH_SET_NORMAL(mesh->vertices[i], n);
break;
/*pinch, not standard (taper on X dim only)*/
case 3:
mesh->vertices[i].pos.x = gf_mulfix(mesh->vertices[i].pos.x, val);
MESH_GET_NORMAL(old, mesh->vertices[i]);
n=old;
n.x = gf_mulfix(n.x, val);
gf_vec_norm(&n);
MESH_SET_NORMAL(mesh->vertices[i], n);
break;
}
}
if (needs_transform) {
gf_mx_inverse(&mx);
for (i=0; i<mesh->v_count; i++) {
gf_mx_apply_vec(&mx, &mesh->vertices[i].pos);
MESH_GET_NORMAL(n, mesh->vertices[i]);
gf_mx_rotate_vector(&mx, &n);
MESH_SET_NORMAL(mesh->vertices[i], n);
}
}
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void TraversePlanarExtrusion(GF_Node *node, void *rs, Bool is_destroy)
{
PlanarExtrusion plane_ext;
Drawable *stack_2d;
u32 i, j, k;
MFVec3f spine_vec;
SFVec3f d;
Fixed spine_len;
GF_Rect bounds;
GF_Path *geo, *spine;
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
Drawable3D *stack = (Drawable3D *)gf_node_get_private(node);
if (is_destroy) {
drawable_3d_del(node);
return;
}
if (!PlanarExtrusion_GetNode(node, &plane_ext)) return;
if (!plane_ext.geometry || !plane_ext.spine) return;
if (gf_node_dirty_get(node)) {
u32 cur, nb_pts;
u32 mode = tr_state->traversing_mode;
geo = spine = NULL;
tr_state->traversing_mode = TRAVERSE_GET_BOUNDS;
gf_node_traverse(plane_ext.geometry, tr_state);
gf_node_traverse(plane_ext.spine, tr_state);
tr_state->traversing_mode = mode;
switch (gf_node_get_tag(plane_ext.geometry) ) {
case TAG_MPEG4_Circle:
case TAG_MPEG4_Ellipse:
case TAG_MPEG4_Rectangle:
case TAG_MPEG4_Curve2D:
case TAG_MPEG4_XCurve2D:
case TAG_MPEG4_IndexedFaceSet2D:
case TAG_MPEG4_IndexedLineSet2D:
stack_2d = (Drawable*)gf_node_get_private(plane_ext.geometry);
if (stack_2d) geo = stack_2d->path;
break;
default:
return;
}
switch (gf_node_get_tag(plane_ext.spine) ) {
case TAG_MPEG4_Circle:
case TAG_MPEG4_Ellipse:
case TAG_MPEG4_Rectangle:
case TAG_MPEG4_Curve2D:
case TAG_MPEG4_XCurve2D:
case TAG_MPEG4_IndexedFaceSet2D:
case TAG_MPEG4_IndexedLineSet2D:
stack_2d = (Drawable*)gf_node_get_private(plane_ext.spine);
if (stack_2d) spine = stack_2d->path;
break;
default:
return;
}
if (!geo || !spine) return;
mesh_reset(stack->mesh);
gf_path_flatten(spine);
gf_path_get_bounds(spine, &bounds);
gf_path_flatten(geo);
gf_path_get_bounds(geo, &bounds);
cur = 0;
for (i=0; i<spine->n_contours; i++) {
nb_pts = 1 + spine->contours[i] - cur;
spine_vec.vals = NULL;
gf_sg_vrml_mf_alloc(&spine_vec, GF_SG_VRML_MFVEC3F, nb_pts);
spine_len = 0;
for (j=cur; j<nb_pts; j++) {
spine_vec.vals[j].x = spine->points[j].x;
spine_vec.vals[j].y = spine->points[j].y;
spine_vec.vals[j].z = 0;
if (j) {
gf_vec_diff(d, spine_vec.vals[j], spine_vec.vals[j-1]);
spine_len += gf_vec_len(d);
}
}
cur += nb_pts;
if (!plane_ext.orientation->count && !plane_ext.scale->count) {
mesh_extrude_path_ext(stack->mesh, geo, &spine_vec, plane_ext.creaseAngle,
bounds.x, bounds.y-bounds.height, bounds.width, bounds.height,
plane_ext.beginCap, plane_ext.endCap, NULL, NULL, plane_ext.txAlongSpine);
}
/*interpolate orientation and scale along subpath line*/
else {
MFRotation ori;
MFVec2f scale;
Fixed cur_len, frac;
ori.vals = NULL;
gf_sg_vrml_mf_alloc(&ori, GF_SG_VRML_MFROTATION, nb_pts);
scale.vals = NULL;
gf_sg_vrml_mf_alloc(&scale, GF_SG_VRML_MFVEC2F, nb_pts);
cur_len = 0;
if (!plane_ext.orientation->count) ori.vals[0].y = FIX_ONE;
if (!plane_ext.scale->count) scale.vals[0].x = scale.vals[0].y = FIX_ONE;
for (j=0; j<nb_pts; j++) {
if (j) {
gf_vec_diff(d, spine_vec.vals[j], spine_vec.vals[j-1]);
cur_len += gf_vec_len(d);
ori.vals[j] = ori.vals[j-1];
scale.vals[j] = scale.vals[j-1];
}
if (plane_ext.orientation->count && (plane_ext.orientation->count == plane_ext.orientationKeys->count)) {
frac = gf_divfix(cur_len , spine_len);
if (frac < plane_ext.orientationKeys->vals[0]) ori.vals[j] = plane_ext.orientation->vals[0];
else if (frac >= plane_ext.orientationKeys->vals[plane_ext.orientationKeys->count-1]) ori.vals[j] = plane_ext.orientation->vals[plane_ext.orientationKeys->count-1];
else {
for (k=1; k<plane_ext.orientationKeys->count; k++) {
Fixed kDiff = plane_ext.orientationKeys->vals[k] - plane_ext.orientationKeys->vals[k-1];
if (!kDiff) continue;
if (frac < plane_ext.orientationKeys->vals[k-1]) continue;
if (frac > plane_ext.orientationKeys->vals[k]) continue;
frac = gf_divfix(frac - plane_ext.orientationKeys->vals[k-1], kDiff);
break;
}
ori.vals[j] = gf_sg_sfrotation_interpolate(plane_ext.orientation->vals[k-1], plane_ext.orientation->vals[k], frac);
}
}
if (plane_ext.scale->count == plane_ext.scaleKeys->count) {
frac = gf_divfix(cur_len , spine_len);
if (frac <= plane_ext.scaleKeys->vals[0]) scale.vals[j] = plane_ext.scale->vals[0];
else if (frac >= plane_ext.scaleKeys->vals[plane_ext.scaleKeys->count-1]) scale.vals[j] = plane_ext.scale->vals[plane_ext.scale->count-1];
else {
for (k=1; k<plane_ext.scaleKeys->count; k++) {
Fixed kDiff = plane_ext.scaleKeys->vals[k] - plane_ext.scaleKeys->vals[k-1];
if (!kDiff) continue;
if (frac < plane_ext.scaleKeys->vals[k-1]) continue;
if (frac > plane_ext.scaleKeys->vals[k]) continue;
frac = gf_divfix(frac - plane_ext.scaleKeys->vals[k-1], kDiff);
break;
}
scale.vals[j].x = gf_mulfix(plane_ext.scale->vals[k].x - plane_ext.scale->vals[k-1].x, frac) + plane_ext.scale->vals[k-1].x;
scale.vals[j].y = gf_mulfix(plane_ext.scale->vals[k].y - plane_ext.scale->vals[k-1].y, frac) + plane_ext.scale->vals[k-1].y;
}
}
}
mesh_extrude_path_ext(stack->mesh, geo, &spine_vec, plane_ext.creaseAngle,
bounds.x, bounds.y-bounds.height, bounds.width, bounds.height,
plane_ext.beginCap, plane_ext.endCap, &ori, &scale, plane_ext.txAlongSpine);
gf_sg_vrml_mf_reset(&ori, GF_SG_VRML_MFROTATION);
gf_sg_vrml_mf_reset(&scale, GF_SG_VRML_MFVEC2F);
}
gf_sg_vrml_mf_reset(&spine_vec, GF_SG_VRML_MFVEC3F);
}
mesh_update_bounds(stack->mesh);
gf_mesh_build_aabbtree(stack->mesh);
}
if (tr_state->traversing_mode==TRAVERSE_DRAW_3D) {
visual_3d_draw(tr_state, stack->mesh);
} else if (tr_state->traversing_mode==TRAVERSE_GET_BOUNDS) {
tr_state->bbox = stack->mesh->bounds;
}
}
static void BuildTriangleFanSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *fanList, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 fan, i, cur_idx, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
memset(&vx, 0, sizeof(GF_Vertex));
cur_idx = 0;
for (fan= 0; fan<fanList->count; fan++) {
u32 start_idx = mesh->v_count;
if (fanList->vals[fan] < 3) continue;
for (i=0; i<(u32) fanList->vals[fan]; i++) {
u32 idx;
if (indices) {
if (indices->count<=cur_idx) return;
if (indices->vals[cur_idx] == -1) {
GF_LOG(GF_LOG_ERROR, GF_LOG_COMPOSE, ("[X3D] bad formatted X3D triangle set\n"));
return;
}
idx = indices->vals[cur_idx];
} else {
idx = cur_idx;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
/*according to X3D spec, if normal field is set, it is ALWAYS as normal per vertex*/
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (idx%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
mesh_set_vertex_vx(mesh, &vx);
cur_idx ++;
if (indices) {
if (cur_idx>=indices->count) break;
} else if (cur_idx==c->point.count) break;
if (i>1) {
mesh_set_vertex_vx(mesh, &mesh->vertices[start_idx]);
mesh_set_vertex_vx(mesh, &vx);
}
}
for (i=start_idx; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
/*get rid of -1*/
if (indices && (cur_idx<indices->count) && (indices->vals[cur_idx]==-1)) cur_idx++;
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (!ccw) mesh->flags |= MESH_IS_CW;
if (!_normal) {
mesh_recompute_normals(mesh);
if (normalPerVertex) {
u32 cur_face = 0;
for (fan=0; fan<fanList->count; fan++) {
SFVec3f n_0, n_1, n_avg, n_tot;
u32 nb_face, start_face;
if (fanList->vals[fan] < 3) continue;
if (fanList->vals[fan] == 3) {
cur_face++;
continue;
}
start_face = cur_face;
/*first face normal*/
MESH_GET_NORMAL(n_0, mesh->vertices[mesh->indices[3*cur_face]]);
n_tot = n_0;
cur_face++;
nb_face = fanList->vals[fan] - 2;
for (i=1; i<nb_face; i++) {
MESH_GET_NORMAL(n_1, mesh->vertices[mesh->indices[3*cur_face + 1]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_norm(&n_avg);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face + 1]], n_avg);
gf_vec_add(n_tot, n_tot, n_1);
n_0 = n_1;
cur_face++;
}
/*and assign center normal*/
gf_vec_norm(&n_tot);
for (i=0; i<nb_face; i++) {
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*(i+start_face)]], n_tot);
}
}
}
}
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void BuildTriangleStripSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *stripList, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 strip, i, cur_idx, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
memset(&vx, 0, sizeof(GF_Vertex));
cur_idx = 0;
for (strip= 0; strip<stripList->count; strip++) {
u32 start_idx = mesh->v_count;
if (stripList->vals[strip] < 3) continue;
for (i=0; i<(u32) stripList->vals[strip]; i++) {
u32 idx;
if (indices) {
if (indices->count<=cur_idx) return;
if (indices->vals[cur_idx] == -1) {
GF_LOG(GF_LOG_ERROR, GF_LOG_COMPOSE, ("[X3D] bad formatted X3D triangle strip\n"));
return;
}
idx = indices->vals[cur_idx];
} else {
idx = cur_idx;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
/*according to X3D spec, if normal field is set, it is ALWAYS as normal per vertex*/
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (idx%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
if (i>2) {
/*duplicate last 2 vertices (we really need independent vertices to handle normals per face)*/
mesh_set_vertex_vx(mesh, &mesh->vertices[mesh->v_count-2]);
mesh_set_vertex_vx(mesh, &mesh->vertices[mesh->v_count-2]);
}
mesh_set_vertex_vx(mesh, &vx);
cur_idx ++;
if (indices) {
if (cur_idx>=indices->count) break;
} else if (cur_idx==c->point.count) break;
}
for (i=start_idx; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
/*get rid of -1*/
if (indices && (cur_idx<indices->count) && (indices->vals[cur_idx]==-1)) cur_idx++;
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (_normal) {
if (!ccw) mesh->flags |= MESH_IS_CW;
}
/*reorder everything to CCW*/
else {
u32 cur_face = 0;
mesh_recompute_normals(mesh);
for (i=0; i<mesh->i_count; i+= 3) {
if ((ccw && (cur_face%2)) || (!ccw && !(cur_face%2))) {
SFVec3f v;
u32 idx;
MESH_GET_NORMAL(v, mesh->vertices[mesh->indices[i]]);
v = gf_vec_scale(v,-1);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[i]], v);
mesh->vertices[mesh->indices[i+1]].normal = mesh->vertices[mesh->indices[i]].normal;
mesh->vertices[mesh->indices[i+2]].normal = mesh->vertices[mesh->indices[i]].normal;
idx = mesh->indices[i+2];
mesh->indices[i+2] = mesh->indices[i+1];
mesh->indices[i+1] = idx;
}
cur_face++;
}
if (normalPerVertex) {
cur_face = 0;
for (strip=0; strip<stripList->count; strip++) {
SFVec3f n_0, n_1, n_2, n_avg;
u32 nb_face;
if (stripList->vals[strip] < 3) continue;
if (stripList->vals[strip] <= 3) {
cur_face ++;
continue;
}
/*first face normal*/
MESH_GET_NORMAL(n_0, mesh->vertices[mesh->indices[3*cur_face]]);
/*second face normal*/
MESH_GET_NORMAL(n_1, mesh->vertices[mesh->indices[3*(cur_face+1)]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_norm(&n_avg);
/*assign to second point of first face and first of second face*/
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face+1]], n_avg);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*(cur_face+1)]], n_avg);
nb_face = stripList->vals[strip] - 2;
cur_face++;
for (i=1; i<nb_face-1; i++) {
/*get normal (use second pt of current face since first has been updated)*/
MESH_GET_NORMAL(n_2, mesh->vertices[mesh->indices[3*cur_face + 1]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_add(n_avg, n_avg, n_2);
gf_vec_norm(&n_avg);
/*last of prev face*/
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face - 1]], n_avg);
/*second of current face*/
mesh->vertices[mesh->indices[3*cur_face + 1]].normal = mesh->vertices[mesh->indices[3*cur_face - 1]].normal;
/*first of next face*/
mesh->vertices[mesh->indices[3*cur_face + 3]].normal = mesh->vertices[mesh->indices[3*cur_face - 1]].normal;
n_0 = n_1;
n_1 = n_2;
cur_face++;
}
}
}
}
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void BuildTriangleSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 i, count, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
if (indices) {
count = indices->count;
} else {
count = c->point.count;
}
while (count%3) count--;
memset(&vx, 0, sizeof(GF_Vertex));
for (i=0; i<count; i++) {
u32 idx;
if (indices) {
if (indices->count<=i) return;
idx = indices->vals[i];
} else {
idx = i;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (i%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
mesh_set_vertex_vx(mesh, &vx);
}
for (i=0; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (!ccw) mesh->flags |= MESH_IS_CW;
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (!_normal) mesh_recompute_normals(mesh);
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
