/*TransformMatrix2D*/
static void TraverseTransformMatrix2D(GF_Node *node, void *rs, Bool is_destroy)
{
Transform2DStack *ptr = (Transform2DStack *) gf_node_get_private(node);
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
if (is_destroy) {
gf_sc_check_focus_upon_destroy(node);
group_2d_destroy(node, (GroupingNode2D*)ptr);
gf_free(ptr);
return;
}
if (gf_node_dirty_get(node) & GF_SG_NODE_DIRTY) {
M_TransformMatrix2D *tr = (M_TransformMatrix2D*)node;
tr_mx2d_get_matrix(node, &ptr->mat);
if ((tr->mxx==FIX_ONE) && (tr->mxy==0) && (tr->tx==0)
&& (tr->myx==0) && (tr->myy==FIX_ONE) && (tr->ty==0) )
ptr->is_identity = 1;
else
ptr->is_identity = 0;
ptr->is_null = ( (!ptr->mat.m[0] && !ptr->mat.m[1]) || (!ptr->mat.m[3] && !ptr->mat.m[4]) ) ? 1 : 0;
gf_node_dirty_clear(node, GF_SG_NODE_DIRTY);
}
traverse_transform(node, ptr, tr_state);
}
static void visual_2d_get_texture_transform(GF_Node *__appear, GF_TextureHandler *txh, GF_Matrix2D *mat, Bool line_texture, Fixed final_width, Fixed final_height)
{
u32 node_tag;
M_Appearance *appear;
GF_Node *txtrans = NULL;
gf_mx2d_init(*mat);
if (!__appear || !txh) return;
appear = (M_Appearance *)__appear;
if (!line_texture) {
if (!appear->textureTransform) return;
txtrans = appear->textureTransform;
} else {
if (gf_node_get_tag(appear->material) != TAG_MPEG4_Material2D) return;
if (gf_node_get_tag(((M_Material2D *)appear->material)->lineProps) != TAG_MPEG4_XLineProperties) return;
txtrans = ((M_XLineProperties *) ((M_Material2D *)appear->material)->lineProps)->textureTransform;
}
if (!txtrans) return;
/*gradient doesn't need bounds info in texture transform*/
if (txh->compute_gradient_matrix) {
final_width = final_height = FIX_ONE;
}
node_tag = gf_node_get_tag(txtrans);
if (node_tag==TAG_MPEG4_TextureTransform) {
/*VRML: Tc' = -C � S � R � C � T � Tc*/
M_TextureTransform *txt = (M_TextureTransform *) txtrans;
SFVec2f scale = txt->scale;
if (!scale.x) scale.x = FIX_ONE/100;
if (!scale.y) scale.y = FIX_ONE/100;
gf_mx2d_add_translation(mat, -gf_mulfix(txt->center.x, final_width), -gf_mulfix(txt->center.y, final_height) );
gf_mx2d_add_scale(mat, scale.x, scale.y);
gf_mx2d_add_rotation(mat, 0, 0, txt->rotation);
gf_mx2d_add_translation(mat, gf_mulfix(txt->center.x, final_width), gf_mulfix(txt->center.y, final_height) );
gf_mx2d_add_translation(mat, gf_mulfix(txt->translation.x, final_width), gf_mulfix(txt->translation.y, final_height) );
/*and inverse the matrix (this is texture transform, cf VRML)*/
gf_mx2d_inverse(mat);
return;
}
if (node_tag==TAG_MPEG4_TransformMatrix2D) {
tr_mx2d_get_matrix((GF_Node *) txtrans, mat);
mat->m[2] = gf_mulfix(mat->m[2], final_width);
mat->m[5] = gf_mulfix(mat->m[5], final_height);
gf_mx2d_inverse(mat);
return;
}
}
