static void ProcessRotateY(Matrix4x4& aMatrix, const nsCSSValue::Array* aData) { NS_PRECONDITION(aData->Count() == 2, "Invalid array!"); double theta = aData->Item(1).GetAngleValueInRadians(); aMatrix.RotateY(theta); }
Mesh MakeTore(unsigned int precision, std::shared_ptr<Texture> & texture) { Mesh::VertexBuffer vb; vb.reserve((precision + 1)*(precision + 1)); float angle = (2 * 3.141592653589f) / precision; Matrix4x4 big = Matrix4x4::Identity; big.Translate(2.0f, 0.0f, 0.0f); for (unsigned int bg = 0; bg <= precision; bg++) { Matrix4x4 small = Matrix4x4::Identity; small.Translate(0.8f, 0.0f, 0.0f); for (unsigned int sm = 0; sm <= precision; sm++) { vb.emplace_back(std::make_pair<>(Transform(Transform(Vec3f(), small), big), Vec2f(texture->m_mipmaps[0].m_width*(float)bg / precision, texture->m_mipmaps[0].m_height*(float)sm / precision))); small.RotateZ(angle); } big.RotateY(angle); } Mesh result(std::move(vb)); for (unsigned int bg = 0; bg<precision; bg++) { std::vector<unsigned int> ib; ib.reserve((precision)* 2 + 2); ib.emplace_back(bg *(precision + 1)); ib.emplace_back((bg + 1)*(precision + 1)); for (unsigned int i = 1; i <= precision; i++) { ib.emplace_back(bg *(precision + 1) + i); ib.emplace_back((bg + 1)*(precision + 1) + i); } result.AddStrip(std::move<>(ib)); } result.SetTexture(texture); return result; }