/// <summary>
/// Creates a NEW plane mesh
/// </summary>
/// <param name="x">Position X</param>
/// <param name="y">Position Y</param>
/// <param name="z">Position Z</param>
/// <param name="width">Width in world units</param>
/// <param name="depth">Depth in world units</param>
/// <param name="segmentsX">Number of segments along the X axis</param>
/// <param name="segmentsZ">Number of segments along the Z axis</param>
/// <param name="rotation">Rotation of the vertices</param>
/// <returns></returns>
public Mesh CreatePlane(float x, float y, float z, float width, float depth, int segmentsX, int segmentsZ, Quaternion rotation)
{
int verticeX = segmentsX + 1;
int verticeZ = segmentsZ + 1;
float sx = 1f / verticeX;
float sz = 1f / verticeZ;
float[] vertices = new float[verticeX * verticeZ * 8];
uint index;
Vector3 tmp;
Mesh mesh = new Mesh();
for (int ix = 0; ix < verticeX; ix++)
{
for (int iz = 0; iz < verticeZ; iz++)
{
index = (uint)(ix * verticeZ + iz) * 8;
tmp = new Vector3(x + width * sx * ix * 2, 0, y + depth * sz * iz * 2);
tmp = Vector3.Transform(tmp, rotation);
tmp += Vector3.Transform(Vector3.UnitY, rotation) * z;
vertices[index] = tmp.X;
vertices[index + 1] = tmp.Y;
vertices[index + 2] = tmp.Z;
vertices[index + 3] = 0;
vertices[index + 4] = 1;
vertices[index + 5] = 0;
vertices[index + 6] = ix / (float)(verticeX - 1);
vertices[index + 7] = 1 - (iz / (float)(verticeZ - 1));
}
}
uint[] indices = new uint[(segmentsX) * (segmentsZ) * 6];
uint vIndex;
for (uint ix = 0; ix < segmentsX; ix++)
{
for (uint iz = 0; iz < segmentsZ; iz++)
{
index = (uint)(ix * segmentsZ + iz) * 8;
vIndex = (uint)((ix * verticeZ + iz) * 3);
indices[index] = vIndex;
indices[index + 1] = vIndex + 1;
indices[index + 2] = (uint)(vIndex + verticeZ);
indices[index + 3] = (uint)(vIndex + verticeZ);
indices[index + 4] = vIndex + 1;
indices[index + 5] = (uint)(vIndex + verticeZ + 1);
}
}
Mesh.Attribute att = new Mesh.Attribute(vertices);
att.SetDrawHints(new AttributeHint("_pos", 3, 8, 0, false), new AttributeHint("_normal", 3, 8, 3, true), new AttributeHint("_texCoord", 2, 8, 6, false));
mesh.Attributes.Add("Vertex", att);
mesh.SetIndices(indices);
return(mesh);
}
/// <summary>
/// Creates a NEW cube mesh
/// </summary>
/// <param name="size">Size in world units</param>
/// <returns></returns>
private Mesh CreateCube(Vector3 size)
{
Mesh mesh = new Mesh();
float[] vertices = new float[] {
//front
0, 0, 0, 0, 0, -1, 0, 0,
0, +size.Y, 0, 0, 0, -1, 0, 1,
+size.X, 0, 0, 0, 0, -1, 1, 0,
+size.X, 0, 0, 0, 0, -1, 1, 0,
0, +size.Y, 0, 0, 0, -1, 0, 1,
+size.X, +size.Y, 0, 0, 0, -1, 1, 1,
//back
+size.X, 0, +size.Z, 0, 0, 1, 0, 0,
+size.X, +size.Y, +size.Z, 0, 0, 1, 0, 1,
0, 0, +size.Z, 0, 0, 1, 1, 0,
0, 0, +size.Z, 0, 0, 1, 1, 0,
+size.X, +size.Y, +size.Z, 0, 0, 1, 0, 1,
0, +size.Y, +size.Z, 0, 0, 1, 1, 1,
//top
0, +size.Y, 0, 0, 1, 0, 0, 0,
0, +size.Y, +size.Z, 0, 1, 0, 0, 1,
+size.X, +size.Y, 0, 0, 1, 0, 1, 0,
+size.X, +size.Y, 0, 0, 1, 0, 1, 0,
0, +size.Y, +size.Z, 0, 1, 0, 0, 1,
+size.X, +size.Y, +size.Z, 0, 1, 0, 1, 1,
//bottom
0, 0, +size.Z, 0, -1, 0, 0, 0,
0, 0, 0, 0, -1, 0, 0, 1,
+size.X, 0, +size.Z, 0, -1, 0, 1, 0,
+size.X, 0, +size.Z, 0, -1, 0, 1, 0,
0, 0, 0, 0, -1, 0, 0, 1,
+size.X, 0, 0, 0, -1, 0, 1, 1,
//left
0, 0, +size.Z, -1, 0, 0, 0, 0,
0, +size.Y, +size.Z, -1, 0, 0, 0, 1,
0, 0, 0, -1, 0, 0, 1, 0,
0, 0, 0, -1, 0, 0, 1, 0,
0, +size.Y, +size.Z, -1, 0, 0, 0, 1,
0, +size.Y, 0, -1, 0, 0, 1, 1,
//right
+size.X, 0, 0, 1, 0, 0, 0, 0,
+size.X, +size.Y, 0, 1, 0, 0, 0, 1,
+size.X, 0, +size.Z, 1, 0, 0, 1, 0,
+size.X, 0, +size.Z, 1, 0, 0, 1, 0,
+size.X, +size.Y, 0, 1, 0, 0, 0, 1,
+size.X, +size.Y, +size.Z, 1, 0, 0, 1, 1
};
/*size *= 0.5f;
* Mesh mesh = new Mesh();
* float[] vertices = new float[] {
* - size.X, - size.Y, - size.Z, -1, -1, -1, 0, 0, //0
+ size.X, - size.Y, - size.Z, 1, -1, -1, 1, 0, //1
+ - size.X, + size.Y, - size.Z, -1, 1, -1, 0, 1, //2
+ size.X, + size.Y, - size.Z, 1, 1, -1, 1, 1, //3
+ - size.X, - size.Y, + size.Z, -1, -1, 1, 0, 1, //4
+ size.X, - size.Y, + size.Z, 1, -1, 1, 1, 1, //5
+ - size.X, + size.Y, + size.Z, -1, 1, 1, 0, 0, //6
+ size.X, + size.Y, + size.Z, 1, 1, 1, 1, 0,//7
+ };*/
Mesh.Attribute att = new Mesh.Attribute(vertices);
att.SetDrawHints(new AttributeHint("_pos", 3, 8, 0, false), new AttributeHint("_normal", 3, 8, 3, true), new AttributeHint("_texCoord", 2, 8, 6, false));
//mesh.SetVertices(vertices);
uint[] indices = new uint[] {
0, 2, 1, 1, 2, 3, //front
6, 4, 7, 7, 4, 5, //back
2, 6, 3, 3, 6, 7, //top
4, 0, 5, 5, 0, 1, //bottom
0, 4, 2, 2, 4, 6, //left
5, 1, 7, 7, 1, 3 //right
};
//mesh.SetIndices(indices);
//mesh.SetDrawHints(new VertexObjectDrawHint("pos", 3, 6, 0, false));
mesh.Attributes.Add("Vertex", att);
return(mesh);
}