我正在使用 C++ 将使用命令行参数输入的 3d 模型转换为 assimp 中的 2d 图片。但是,我不确定最好的方法。我有用于创建集合对象的基本硬编码,但我需要使用向量和循环重做它。最好的方法是什么?
void createSimpleQuad(Mesh &m) {
// Clear out vertices and elements
m.vertices.clear();
m.indices.clear();
// Create four corners
Vertex upperLeft, upperRight;
Vertex lowerLeft, lowerRight;
Vertex upperMiddle;
// Set positions of vertices
// Note: glm::vec3(x, y, z)
upperLeft.position = glm::vec3(-0.5, 0.5, 0.0);
upperRight.position = glm::vec3(0.5, 0.5, 0.0);
lowerLeft.position = glm::vec3(-0.5, -0.5, 0.0);
lowerRight.position = glm::vec3(0.5, -0.5, 0.0);
upperMiddle.position = glm::vec3(-0.9, 0.5, 0.0);
// Set vertex colors (red, green, blue, white)
// Note: glm::vec4(red, green, blue, alpha)
upperLeft.color = glm::vec4(1.0, 0.0, 0.0, 1.0);
upperRight.color = glm::vec4(0.0, 1.0, 0.0, 1.0);
lowerLeft.color = glm::vec4(0.0, 0.0, 1.0, 1.0);
lowerRight.color = glm::vec4(1.0, 1.0, 1.0, 1.0);
upperMiddle.color = glm::vec4(0.5, 0.15, 0.979797979, 1.0);
// Add to mesh's list of vertices
m.vertices.push_back(upperLeft);
m.vertices.push_back(upperRight);
m.vertices.push_back(lowerLeft);
m.vertices.push_back(lowerRight);
m.vertices.push_back(upperMiddle);
// Add indices for two triangles
m.indices.push_back(0);
m.indices.push_back(3);
m.indices.push_back(1);
m.indices.push_back(0);
m.indices.push_back(2);
m.indices.push_back(3);
m.indices.push_back(0);
m.indices.push_back(2);
m.indices.push_back(4);
}
答案 0 :(得分:0)
如果您想从 3D 模型中生成 2D 图片,您需要:
目前在 Assimp 中没有自动生成 2D 视图的后期处理。
但是当你想用你自己的渲染代码来做这件事时,这并不难。导入模型后,您必须: