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add vertex-color flag

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This commit is contained in:
David Rose 2003-04-18 21:29:28 +00:00
parent f7cc219531
commit 106d8cb648
1 changed files with 25 additions and 20 deletions
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45
pandatool/src/mayaegg/mayaToEggConverter.cxx
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@ -1353,6 +1353,10 @@ make_polyset(const MDagPath &dag_path, const MFnMesh &mesh,
// will be different from world space.
LMatrix4d vertex_frame_inv = egg_group->get_vertex_frame_inv();
// Save this modeling flag for the vertex color check later (see the
// comment below).
bool egg_vertex_color = egg_group->has_object_type("vertex-color");
while (!pi.isDone()) {
EggPolygon *egg_poly = new EggPolygon;
egg_group->add_child(egg_poly);
@ -1376,11 +1380,18 @@ make_polyset(const MDagPath &dag_path, const MFnMesh &mesh,
const MayaShaderColorDef &color_def = shader->_color;
// Since a texture completely replaces a polygon or vertex color,
// we need to know up front whether we have a texture.
bool has_texture = false;
// Should we extract the color from the vertices? Normally, in
// Maya a texture completely replaces the vertex color, so we
// should ignore the vertex color if we have a texture.
// However, this is an inconvenient property of Maya; sometimes we
// really do want both vertex color and texture applied to the
// same object. To allow this, we define the special egg flag
// "vertex-color", which when set indicates that we should
// respect the vertex color anyway.
bool ignore_vertex_color = false;
if (shader != (MayaShader *)NULL) {
has_texture = color_def._has_texture;
ignore_vertex_color = color_def._has_texture && !egg_vertex_color;
}
// Get the vertices for the polygon.
@ -1434,7 +1445,7 @@ make_polyset(const MDagPath &dag_path, const MFnMesh &mesh,
}
}
if (pi.hasColor() && !has_texture) {
if (pi.hasColor() && !ignore_vertex_color) {
MColor c;
status = pi.getColor(c, i);
if (!status) {
@ -1923,21 +1934,15 @@ set_shader_attributes(EggPrimitive &primitive, const MayaShader &shader) {
// Also apply an overall color to the primitive.
Colorf rgba = shader.get_rgba();
// This is a placeholder for a parameter on the shader or group that
// we have yet to define.
static const bool modulate = false;
if (!modulate) {
// If modulate is not specified, the existence of a texture on
// either color channel completely replaces the flat color.
if (color_def._has_texture) {
rgba[0] = 1.0f;
rgba[1] = 1.0f;
rgba[2] = 1.0f;
}
if (trans_def._has_texture) {
rgba[3] = 1.0f;
}
// The existence of a texture on either color channel completely
// replaces the corresponding flat color.
if (color_def._has_texture) {
rgba[0] = 1.0f;
rgba[1] = 1.0f;
rgba[2] = 1.0f;
}
if (trans_def._has_texture) {
rgba[3] = 1.0f;
}
// But the color gain always gets applied.