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display cubes for a cube map or 3-d texture

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This commit is contained in:
David Rose 2010-06-12 21:09:22 +00:00
parent 02a740c143
commit 94eeacbbe2
1 changed files with 86 additions and 12 deletions
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98
panda/src/framework/windowFramework.cxx
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@ -1253,25 +1253,99 @@ load_image_as_model(const Filename &filename) {
card_node->set_attrib(TransparencyAttrib::make(TransparencyAttrib::M_alpha));
}
bool is_3d = false;
if (tex->get_texture_type() == Texture::TT_3d_texture ||
tex->get_texture_type() == Texture::TT_cube_map) {
// For a 3-d texture, generate a cube, instead of a plain card.
is_3d = true;
}
CPT(GeomVertexFormat) vformat;
if (!is_3d) {
// Vertices and 2-d texture coordinates, all we need.
vformat = GeomVertexFormat::get_v3t2();
} else {
// Vertices and 3-d texture coordinates.
vformat = GeomVertexFormat::register_format
(new GeomVertexArrayFormat
(InternalName::get_vertex(), 3,
GeomEnums::NT_float32, GeomEnums::C_point,
InternalName::get_texcoord(), 3,
GeomEnums::NT_float32, GeomEnums::C_texcoord));
}
PT(GeomVertexData) vdata = new GeomVertexData
("card", GeomVertexFormat::get_v3t2(),
Geom::UH_static);
("card", vformat, Geom::UH_static);
GeomVertexWriter vertex(vdata, InternalName::get_vertex());
GeomVertexWriter texcoord(vdata, InternalName::get_texcoord());
vertex.add_data3f(Vertexf::rfu(left, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(left, 0.02f, bottom));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, bottom));
if (!is_3d) {
// A normal 2-d card.
vertex.add_data3f(Vertexf::rfu(left, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(left, 0.02f, bottom));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, bottom));
texcoord.add_data2f(0.0f, tex_scale[1]);
texcoord.add_data2f(0.0f, 0.0f);
texcoord.add_data2f(tex_scale[0], tex_scale[1]);
texcoord.add_data2f(tex_scale[0], 0.0f);
texcoord.add_data2f(0.0f, tex_scale[1]);
texcoord.add_data2f(0.0f, 0.0f);
texcoord.add_data2f(tex_scale[0], tex_scale[1]);
texcoord.add_data2f(tex_scale[0], 0.0f);
} else {
// The eight vertices of a 3-d cube.
vertex.add_data3f(-1.0f, -1.0f, 1.0f); // 0
vertex.add_data3f(-1.0f, -1.0f, -1.0f); // 1
vertex.add_data3f(1.0f, -1.0f, -1.0f); // 2
vertex.add_data3f(1.0f, -1.0f, 1.0f); // 3
vertex.add_data3f(1.0f, 1.0f, 1.0f); // 4
vertex.add_data3f(1.0f, 1.0f, -1.0f); // 5
vertex.add_data3f(-1.0f, 1.0f, -1.0f); // 6
vertex.add_data3f(-1.0f, 1.0f, 1.0f); // 7
texcoord.add_data3f(-1.0f, -1.0f, 1.0f); // 0
texcoord.add_data3f(-1.0f, -1.0f, -1.0f); // 1
texcoord.add_data3f(1.0f, -1.0f, -1.0f); // 2
texcoord.add_data3f(1.0f, -1.0f, 1.0f); // 3
texcoord.add_data3f(1.0f, 1.0f, 1.0f); // 4
texcoord.add_data3f(1.0f, 1.0f, -1.0f); // 5
texcoord.add_data3f(-1.0f, 1.0f, -1.0f); // 6
texcoord.add_data3f(-1.0f, 1.0f, 1.0f); // 7
}
PT(GeomTristrips) strip = new GeomTristrips(Geom::UH_static);
strip->add_consecutive_vertices(0, 4);
strip->close_primitive();
if (!is_3d) {
// The two triangles that make up a quad.
strip->add_consecutive_vertices(0, 4);
strip->close_primitive();
} else {
// The twelve triangles (six quads) that make up a cube.
strip->add_vertex(7);
strip->add_vertex(0);
strip->add_vertex(4);
strip->add_vertex(3);
strip->close_primitive();
strip->add_vertex(1);
strip->add_vertex(6);
strip->add_vertex(2);
strip->add_vertex(5);
strip->close_primitive();
strip->add_vertex(5);
strip->add_vertex(4);
strip->add_vertex(2);
strip->add_vertex(3);
strip->add_vertex(1);
strip->add_vertex(0);
strip->add_vertex(6);
strip->add_vertex(7);
strip->add_vertex(5);
strip->add_vertex(4);
strip->close_primitive();
}
PT(Geom) geom = new Geom(vdata);
geom->add_primitive(strip);