private static bool UpdateBrushMesh(Int32 brushMeshIndex,
BrushMesh brushMesh)
{
if (brushMeshIndex == 0 ||
brushMesh.vertices == null ||
brushMesh.halfEdges == null ||
brushMesh.polygons == null)
{
return(false);
}
var edgeCount = brushMesh.halfEdges.Length;
if (edgeCount < 12)
{
return(false);
}
var polygonCount = brushMesh.polygons.Length;
if (polygonCount < 5)
{
return(false);
}
var vertexCount = brushMesh.vertices.Length;
var result = UpdateBrushMesh(brushMeshIndex,
vertexCount, brushMesh.vertices,
edgeCount, brushMesh.halfEdges,
polygonCount, brushMesh.polygons);
return(result);
}
private static Int32 CreateBrushMesh(int userID, BrushMesh brushMesh)
{
if (brushMesh == null ||
brushMesh.vertices == null ||
brushMesh.halfEdges == null ||
brushMesh.polygons == null)
{
return(0);
}
var edgeCount = brushMesh.halfEdges.Length;
if (edgeCount < 12)
{
return(0);
}
var polygonCount = brushMesh.polygons.Length;
if (polygonCount <= 4)
{
return(0);
}
var vertexCount = brushMesh.vertices.Length;
var result = CreateBrushMesh(userID,
vertexCount, brushMesh.vertices,
edgeCount, brushMesh.halfEdges,
polygonCount, brushMesh.polygons);
if (result <= 0)
{
result = 0;
}
return(result);
}
/// <summary>Update this <see cref="RealtimeCSG.Foundation.BrushMeshInstance"/> with the given <see cref="RealtimeCSG.Foundation.BrushMesh"/>.</summary>
/// <param name="brushMesh">The <see cref="RealtimeCSG.Foundation.BrushMesh"/> to update the <see cref="RealtimeCSG.Foundation.BrushMeshInstance"/> with</param>
/// <returns><b>true</b> on success, <b>false</b> on failure. In case of failure the brush will keep using the previously set <see cref="RealtimeCSG.Foundation.BrushMesh"/>.</returns>
public bool Set(BrushMesh brushMesh)
{
return(UpdateBrushMesh(brushMeshID, brushMesh));
}
/// <summary>Create a <see cref="RealtimeCSG.Foundation.BrushMeshInstance"/> from a given <see cref="RealtimeCSG.Foundation.BrushMesh"/></summary>
/// <param name="brushMesh">The <see cref="RealtimeCSG.Foundation.BrushMesh"/> to create an instance with</param>
/// <returns>A newly created <see cref="RealtimeCSG.Foundation.BrushMeshInstance"/> on success, or an invalid <see cref="RealtimeCSG.Foundation.BrushMeshInstance"/> on failure.</returns>
public static BrushMeshInstance Create(BrushMesh brushMesh, Int32 userID = 0)
{
return(new BrushMeshInstance {
brushMeshID = CreateBrushMesh(userID, brushMesh)
});
}
public static bool ValidateBrushMesh(BrushMesh brushMesh)
{
var vertices = brushMesh.vertices;
if (vertices == null || vertices.Length == 0)
{
Debug.LogError("brushMesh has no vertices set");
return(false);
}
var halfEdges = brushMesh.halfEdges;
if (halfEdges == null || halfEdges.Length == 0)
{
Debug.LogError("brushMesh has no halfEdges set");
return(false);
}
var polygons = brushMesh.polygons;
if (polygons == null || polygons.Length == 0)
{
Debug.LogError("brushMesh has no polygons set");
return(false);
}
bool fail = false;
for (int h = 0; h < halfEdges.Length; h++)
{
if (halfEdges[h].vertexIndex < 0)
{
Debug.LogError("brushMesh.halfEdges[" + h + "].vertexIndex is " + halfEdges[h].vertexIndex);
fail = true;
}
else
if (halfEdges[h].vertexIndex >= vertices.Length)
{
Debug.LogError("brushMesh.halfEdges[" + h + "].vertexIndex is " + halfEdges[h].vertexIndex + ", but there are " + vertices.Length + " vertices.");
fail = true;
}
if (halfEdges[h].twinIndex < 0)
{
Debug.LogError("brushMesh.halfEdges[" + h + "].twinIndex is " + halfEdges[h].twinIndex);
fail = true;
continue;
}
else
if (halfEdges[h].twinIndex >= halfEdges.Length)
{
Debug.LogError("brushMesh.halfEdges[" + h + "].twinIndex is " + halfEdges[h].twinIndex + ", but there are " + halfEdges.Length + " edges.");
fail = true;
continue;
}
var twinIndex = halfEdges[h].twinIndex;
var twin = halfEdges[twinIndex];
if (twin.twinIndex != h)
{
Debug.LogError("brushMesh.halfEdges[" + h + "].twinIndex is " + halfEdges[h].twinIndex + ", but the twinIndex of its twin is " + twin.twinIndex + " instead of " + h + ".");
fail = true;
}
}
for (int p = 0; p < polygons.Length; p++)
{
var firstEdge = polygons[p].firstEdge;
var count = polygons[p].edgeCount;
if (firstEdge < 0)
{
Debug.LogError("brushMesh.polygons[" + p + "].firstEdge is " + firstEdge);
fail = true;
}
else
if (firstEdge >= halfEdges.Length)
{
Debug.LogError("brushMesh.polygons[" + p + "].firstEdge is " + firstEdge + ", but there are " + halfEdges.Length + " edges.");
fail = true;
}
if (count <= 0)
{
Debug.LogError("brushMesh.polygons[" + p + "].edgeCount is " + count);
fail = true;
}
else
if (firstEdge + count > halfEdges.Length)
{
Debug.LogError("brushMesh.polygons[" + p + "].firstEdge + brushMesh.polygons[" + p + "].edgeCount is " + (firstEdge + count) + ", but there are " + halfEdges.Length + " edges.");
fail = true;
}
else
if (p < polygons.Length - 1 &&
polygons[p + 1].firstEdge != firstEdge + count)
{
Debug.LogError("brushMesh.polygons[" + (p + 1) + "].firstEdge does not equal brushMesh.polygons[" + p + "].firstEdge + brushMesh.polygons[" + p + "].edgeCount.");
fail = true;
}
for (int i1 = 0, i0 = count - 1; i1 < count; i0 = i1, i1++)
{
var h0 = halfEdges[i0 + firstEdge]; // curr
var h1 = halfEdges[i1 + firstEdge]; // curr.prev
var t1 = halfEdges[h1.twinIndex]; // curr.prev.twin
if (h0.vertexIndex != t1.vertexIndex)
{
Debug.LogError("brushMesh.halfEdges[" + (i0 + firstEdge) + "].vertexIndex (" + h0.vertexIndex + ") is not equal to brushMesh.halfEdges[" + h1.twinIndex + "].vertexIndex (" + t1.vertexIndex + ").");
fail = true;
}
}
}
return(!fail);
}