void DrawPlane(int vertexIndex1, int vertexIndex2, int vertexIndex3, int vertexIndex4)
{
vertex_t p1 = Def.mesh[vertexIndex1], p2 = Def.mesh[vertexIndex2], p3 = Def.mesh[vertexIndex3], p4 = Def.mesh[vertexIndex4];
DrawTriangle(p1, p2, p3);
DrawTriangle(p1, p3, p4);
}
void DrawPlane_1(int vertexIndex1, int vertexIndex2, int vertexIndex3, int vertexIndex4)
{
vertex_t v1 = Def.mesh[vertexIndex1], v2 = Def.mesh[vertexIndex2], v3 = Def.mesh[vertexIndex3], v4 = Def.mesh[vertexIndex4];
vector_t p1, p2, p3, p4, c1, c2, c3, c4;
c1 = Tools.matrix_apply(v1.pos, mTransformer.transform);
c2 = Tools.matrix_apply(v2.pos, mTransformer.transform);
c3 = Tools.matrix_apply(v3.pos, mTransformer.transform);
c4 = Tools.matrix_apply(v4.pos, mTransformer.transform);
p1 = Tools.Homogenize(c1);
p2 = Tools.Homogenize(c2);
p3 = Tools.Homogenize(c3);
p4 = Tools.Homogenize(c4);
point_t _node1 = new point_t((int)p1.x, (int)p1.y);
point_t _node2 = new point_t((int)p2.x, (int)p2.y);
point_t _node3 = new point_t((int)p3.x, (int)p3.y);
point_t _node4 = new point_t((int)p4.x, (int)p4.y);
DrawLine(_node1, _node2, v1.color);
DrawLine(_node2, _node3, v2.color);
DrawLine(_node3, _node4, v3.color);
DrawLine(_node4, _node1, v4.color);
}
public static void InitMesh_Box()
{
for (int i = 0; i < 8; ++i)
{
mesh[i] = new vertex_t();
mesh[i].pos = new vector_t(meshData_Box[i, 0], meshData_Box[i, 1], meshData_Box[i, 2], meshData_Box[i, 3]);
mesh[i].tc = new texcoord_t(meshData_Box[i, 4], meshData_Box[i, 5]);
mesh[i].color = Color.FromArgb((int)(meshData_Box[i, 6] * 255), (int)(meshData_Box[i, 7] * 255), (int)(meshData_Box[i, 8] * 255));
mesh[i].rhw = meshData_Box[i, 9];
}
}
void DrawTriangle(vertex_t v1, vertex_t v2, vertex_t v3)
{
vector_t p1, p2, p3, c1, c2, c3;
// 按照 Transform 变化
c1 = Tools.matrix_apply(v1.pos, mTransformer.transform);
c2 = Tools.matrix_apply(v2.pos, mTransformer.transform);
c3 = Tools.matrix_apply(v3.pos, mTransformer.transform);
p1 = Tools.Homogenize(c1);
p2 = Tools.Homogenize(c2);
p3 = Tools.Homogenize(c3);
point_t _point1 = new point_t((int)p1.x, (int)p1.y);
point_t _point2 = new point_t((int)p2.x, (int)p2.y);
point_t _point3 = new point_t((int)p3.x, (int)p3.y);
//画线框
//DrawLine(_point1, _point2, Color.Black);
//DrawLine(_point2, _point3, Color.Black);
//DrawLine(_point1, _point3, Color.Black);
//DrawPoint_S(_point1, Color.Red, 3);
//DrawPoint_S(_point2, Color.Yellow, 3);
//DrawPoint_S(_point3, Color.Blue, 3);
if (TriangleCullingJudge_A(c1, c2, c3))
{
}
else
{
//光栅化填充
triangle_2D _triangle = new triangle_2D();
_triangle.mPoints[0] = _point1; _triangle.mPoints[1] = _point2; _triangle.mPoints[2] = _point3;
_triangle.mColors[0] = v1.color; _triangle.mColors[1] = v2.color; _triangle.mColors[2] = v3.color;
Rasterization_Triangle(_triangle);
}
}