public static Mesh CreateHiddenAreaMesh(HiddenAreaMesh_t src, VRTextureBounds_t bounds)
{
if (src.unTriangleCount == 0)
return null;
var data = new float[src.unTriangleCount * 3 * 2]; //HmdVector2_t
Marshal.Copy(src.pVertexData, data, 0, data.Length);
var vertices = new Vector3[src.unTriangleCount * 3 + 12];
var indices = new int[src.unTriangleCount * 3 + 24];
var x0 = 2.0f * bounds.uMin - 1.0f;
var x1 = 2.0f * bounds.uMax - 1.0f;
var y0 = 2.0f * bounds.vMin - 1.0f;
var y1 = 2.0f * bounds.vMax - 1.0f;
for (int i = 0, j = 0; i < src.unTriangleCount * 3; i++)
{
var x = Lerp(x0, x1, data[j++]);
var y = Lerp(y0, y1, data[j++]);
vertices[i] = new Vector3(x, y, 0.0f);
indices[i] = i;
}
// Add border
var offset = (int)src.unTriangleCount * 3;
var iVert = offset;
vertices[iVert++] = new Vector3(-1, -1, 0);
vertices[iVert++] = new Vector3(x0, -1, 0);
vertices[iVert++] = new Vector3(-1, 1, 0);
vertices[iVert++] = new Vector3(x0, 1, 0);
vertices[iVert++] = new Vector3(x1, -1, 0);
vertices[iVert++] = new Vector3(1, -1, 0);
vertices[iVert++] = new Vector3(x1, 1, 0);
vertices[iVert++] = new Vector3(1, 1, 0);
vertices[iVert++] = new Vector3(x0, y0, 0);
vertices[iVert++] = new Vector3(x1, y0, 0);
vertices[iVert++] = new Vector3(x0, y1, 0);
vertices[iVert++] = new Vector3(x1, y1, 0);
var iTri = offset;
indices[iTri++] = offset + 0;
indices[iTri++] = offset + 1;
indices[iTri++] = offset + 2;
indices[iTri++] = offset + 2;
indices[iTri++] = offset + 1;
indices[iTri++] = offset + 3;
indices[iTri++] = offset + 4;
indices[iTri++] = offset + 5;
indices[iTri++] = offset + 6;
indices[iTri++] = offset + 6;
indices[iTri++] = offset + 5;
indices[iTri++] = offset + 7;
indices[iTri++] = offset + 1;
indices[iTri++] = offset + 4;
indices[iTri++] = offset + 8;
indices[iTri++] = offset + 8;
indices[iTri++] = offset + 4;
indices[iTri++] = offset + 9;
indices[iTri++] = offset + 10;
indices[iTri++] = offset + 11;
indices[iTri++] = offset + 3;
indices[iTri++] = offset + 3;
indices[iTri++] = offset + 11;
indices[iTri++] = offset + 6;
var mesh = new Mesh();
mesh.vertices = vertices;
mesh.triangles = indices;
mesh.bounds = new Bounds(Vector3.zero, new Vector3(float.MaxValue, float.MaxValue, float.MaxValue)); // Prevent frustum culling from culling this mesh
return mesh;
}
public static Mesh CreateHiddenAreaMesh(HiddenAreaMesh_t src, VRTextureBounds_t bounds)
{
if (src.unTriangleCount == 0u)
{
return(null);
}
float[] array = new float[src.unTriangleCount * 3u * 2u];
Marshal.Copy(src.pVertexData, array, 0, array.Length);
Vector3[] array2 = new Vector3[src.unTriangleCount * 3u + 12u];
int[] array3 = new int[src.unTriangleCount * 3u + 24u];
float num = 2f * bounds.uMin - 1f;
float num2 = 2f * bounds.uMax - 1f;
float num3 = 2f * bounds.vMin - 1f;
float num4 = 2f * bounds.vMax - 1f;
int num5 = 0;
int num6 = 0;
while ((long)num5 < (long)((ulong)(src.unTriangleCount * 3u)))
{
float x = SteamVR_Utils.Lerp(num, num2, array[num6++]);
float y = SteamVR_Utils.Lerp(num3, num4, array[num6++]);
array2[num5] = new Vector3(x, y, 0f);
array3[num5] = num5;
num5++;
}
int num7 = (int)(src.unTriangleCount * 3u);
int num8 = num7;
array2[num8++] = new Vector3(-1f, -1f, 0f);
array2[num8++] = new Vector3(num, -1f, 0f);
array2[num8++] = new Vector3(-1f, 1f, 0f);
array2[num8++] = new Vector3(num, 1f, 0f);
array2[num8++] = new Vector3(num2, -1f, 0f);
array2[num8++] = new Vector3(1f, -1f, 0f);
array2[num8++] = new Vector3(num2, 1f, 0f);
array2[num8++] = new Vector3(1f, 1f, 0f);
array2[num8++] = new Vector3(num, num3, 0f);
array2[num8++] = new Vector3(num2, num3, 0f);
array2[num8++] = new Vector3(num, num4, 0f);
array2[num8++] = new Vector3(num2, num4, 0f);
int num9 = num7;
array3[num9++] = num7;
array3[num9++] = num7 + 1;
array3[num9++] = num7 + 2;
array3[num9++] = num7 + 2;
array3[num9++] = num7 + 1;
array3[num9++] = num7 + 3;
array3[num9++] = num7 + 4;
array3[num9++] = num7 + 5;
array3[num9++] = num7 + 6;
array3[num9++] = num7 + 6;
array3[num9++] = num7 + 5;
array3[num9++] = num7 + 7;
array3[num9++] = num7 + 1;
array3[num9++] = num7 + 4;
array3[num9++] = num7 + 8;
array3[num9++] = num7 + 8;
array3[num9++] = num7 + 4;
array3[num9++] = num7 + 9;
array3[num9++] = num7 + 10;
array3[num9++] = num7 + 11;
array3[num9++] = num7 + 3;
array3[num9++] = num7 + 3;
array3[num9++] = num7 + 11;
array3[num9++] = num7 + 6;
return(new Mesh
{
vertices = array2,
triangles = array3,
bounds = new Bounds(Vector3.zero, new Vector3(float.MaxValue, float.MaxValue, float.MaxValue))
});
}
