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 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;
}
}
