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我需要爲一個矩形設置頂點 - 我有一個正方形的例子，我將如何修改它以獲得5倍寬度和一半高度的矩形？如何設置矩形的頂點？
/** The initial vertex definition */
private float vertices[] = {
//Vertices according to faces
-1.0f, -1.0f, 1.0f, //v0
1.0f, -1.0f, 1.0f, //v1
-1.0f, 1.0f, 1.0f, //v2
1.0f, 1.0f, 1.0f, //v3
1.0f, -1.0f, 1.0f, // ...
1.0f, -1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
};
好了，所以我想我設置頂點正確的，但現在我需要設置法線紋理和指標：
/** The initial vertex definition */
private float vertices[] = {
//Vertices according to faces
-1.0f, -.5f, 1.0f, //v0
4.0f, -.5f, 1.0f, //v1
-1.0f, .5f, 1.0f, //v2
4.0f, .5f, 1.0f, //v3
4.0f, -.5f, 1.0f, // 2...
4.0f, -.5f, -1.0f,
4.0f, .5f, 1.0f,
4.0f, .5f, -1.0f,
4.0f, -.5f, -1.0f, //3
-1.0f, -.5f, -1.0f,
4.0f, .5f, -1.0f,
-1.0f, .5f, -1.0f,
-1.0f, -.5f, -1.0f, //4
-1.0f, -.5f, 1.0f,
-1.0f, .5f, -1.0f,
-1.0f, .5f, 1.0f,
-1.0f, -.5f, -1.0f, //5
4.0f, -.5f, -1.0f,
-1.0f, -.5f, 1.0f,
4.0f, -.5f, 1.0f,
-1.0f, .5f, 1.0f, //6
4.0f, .5f, 1.0f,
-1.0f, .5f, -1.0f,
4.0f, .5f, -1.0f,
};
任何建議如何設置這些：
private float normals[] = {
// Normals
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
};
/** The initial texture coordinates (u, v) */
private float texture[] = {
//Mapping coordinates for the vertices
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
1.0f, 1.0f,
};
/** The initial indices definition */
private byte indices[] = {
// Faces definition
0, 1, 3, 0, 3, 2, // Face front
4, 5, 7, 4, 7, 6, // Face right
8, 9, 11, 8, 11, 10, // ...
12, 13, 15, 12, 15, 14,
16, 17, 19, 16, 19, 18,
20, 21, 23, 20, 23, 22,
};