public void MeshFaceSplitAndUnspiltTests()
{
{
// centerVertexTop (0, 0, 2)
//
//
//
//
// leftVertexBottom (-1, 0, 0) centerVertexBottom (0, 0, 0) rightVertexBottom (1, 0, 0)
// Test needs writable directory
Environment.CurrentDirectory = TestContext.CurrentContext.WorkDirectory;
Mesh testMesh = new Mesh();
IVertex leftVertexBottom = testMesh.CreateVertex(-1, 0, 0);
IVertex centerVertexBottom = testMesh.CreateVertex(0, 0, 0);
IVertex rightVertexBottom = testMesh.CreateVertex(1, 0, 0);
IVertex centerVertexTop = testMesh.CreateVertex(0, 0, 1);
Face originalFace = testMesh.CreateFace(new IVertex[] { leftVertexBottom, centerVertexBottom, rightVertexBottom, centerVertexTop });
SaveDebugInfo(testMesh);
// *
// / \
// / \
// / \
// / \
// *----*----*
Assert.IsTrue(testMesh.FindMeshEdges(leftVertexBottom, centerVertexBottom).Count == 1);
MeshEdge firstFaceEdgeMeshEdge = testMesh.FindMeshEdges(leftVertexBottom, centerVertexBottom)[0];
Assert.IsTrue(originalFace.firstFaceEdge.MeshEdge == firstFaceEdgeMeshEdge);
Assert.IsTrue(originalFace.NumVertices == 4, "The original face has 4 vertices.");
MeshEdge edgeLeftCenter = testMesh.FindMeshEdges(leftVertexBottom, centerVertexBottom)[0];
MeshEdge edgeCenterRight = testMesh.FindMeshEdges(centerVertexBottom, rightVertexBottom)[0];
MeshEdge edgeTopLeft = testMesh.FindMeshEdges(centerVertexTop, leftVertexBottom)[0];
MeshEdge edgeRightTop = testMesh.FindMeshEdges(centerVertexTop, rightVertexBottom)[0];
Assert.IsTrue(edgeTopLeft.NextMeshEdgeFromEnd[0] == edgeRightTop);
Assert.IsTrue(edgeTopLeft.NextMeshEdgeFromEnd[1] == edgeLeftCenter);
Assert.IsTrue(centerVertexBottom.GetConnectedMeshEdgesCount() == 2);
string connectionInfoBeforeSplit = testMesh.GetConnectionInfoAsString();
// split the face and test the result
Face faceCreatedDuringSplit;
MeshEdge meshEdgeCreatedDuringSplit;
testMesh.SplitFace(originalFace, centerVertexBottom, centerVertexTop, out meshEdgeCreatedDuringSplit, out faceCreatedDuringSplit);
SaveDebugInfo(testMesh);
// *
// /|\
// / | \
// / | \
// / | \
// *----*----*
testMesh.Validate();
//Debug.Write(testMesh.GetConnectionInfoAsString());
Assert.IsTrue(meshEdgeCreatedDuringSplit.VertexOnEnd[0] == centerVertexBottom);
Assert.IsTrue(meshEdgeCreatedDuringSplit.VertexOnEnd[1] == centerVertexTop);
Assert.IsTrue(edgeLeftCenter.NextMeshEdgeFromEnd[1] == meshEdgeCreatedDuringSplit);
Assert.IsTrue(edgeTopLeft.NextMeshEdgeFromEnd[1] == edgeLeftCenter);
Assert.IsTrue(originalFace.firstFaceEdge.MeshEdge == meshEdgeCreatedDuringSplit);
Assert.IsTrue(originalFace.NumVertices == 3, "The original face now has 3 vertices.");
Assert.IsTrue(centerVertexBottom.GetConnectedMeshEdgesCount() == 3);
Assert.IsTrue(meshEdgeCreatedDuringSplit.GetNumFacesSharingEdge() == 2, "The edge we split on now has 2 faces attached to it.");
Assert.IsTrue(centerVertexBottom.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(centerVertexTop.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(leftVertexBottom.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(rightVertexBottom.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(faceCreatedDuringSplit.NumVertices == 3, "The created now has 3 vertices.");
// Unsplit the faces keeping the original face, and test the result.
testMesh.UnsplitFace(originalFace, faceCreatedDuringSplit, meshEdgeCreatedDuringSplit);
SaveDebugInfo(testMesh);
// *
// / \
// / \
// / \
// / \
// *----*----*
string connectionInfoAfterUnsplit = testMesh.GetConnectionInfoAsString();
testMesh.Validate();
foreach (FaceEdge faceEdge in originalFace.FaceEdges())
{
// make sure none of them are connected to the deleted MeshEdge
Assert.IsTrue(faceEdge.MeshEdge != meshEdgeCreatedDuringSplit);
Assert.IsTrue(faceEdge.MeshEdge.NextMeshEdgeFromEnd[0] != meshEdgeCreatedDuringSplit);
Assert.IsTrue(faceEdge.MeshEdge.NextMeshEdgeFromEnd[1] != meshEdgeCreatedDuringSplit);
}
//Debug.Write(testMesh.GetConnectionInfoAsString());
Assert.IsTrue(originalFace.NumVertices == 4, "The original face is back to 4 vertices.");
Assert.IsTrue(meshEdgeCreatedDuringSplit.firstFaceEdge == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(meshEdgeCreatedDuringSplit.VertexOnEnd[0] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(meshEdgeCreatedDuringSplit.NextMeshEdgeFromEnd[0] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(meshEdgeCreatedDuringSplit.VertexOnEnd[1] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(meshEdgeCreatedDuringSplit.NextMeshEdgeFromEnd[1] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(faceCreatedDuringSplit.firstFaceEdge == null, "The data for the deleted face is all null to help debugging.");
Assert.IsTrue(centerVertexBottom.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
Assert.IsTrue(centerVertexTop.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
}
{
Mesh testMesh = new Mesh();
IVertex leftVertexBottom = testMesh.CreateVertex(-1, 0, 0);
IVertex rightVertexBottom = testMesh.CreateVertex(1, 0, 0);
IVertex leftVertexCenter = testMesh.CreateVertex(-1, 0, 1);
IVertex rightVertexCenter = testMesh.CreateVertex(1, 0, 1);
IVertex leftVertexTop = testMesh.CreateVertex(-1, 0, 2);
IVertex rightVertexTop = testMesh.CreateVertex(1, 0, 2);
Face originalFace = testMesh.CreateFace(new IVertex[] { rightVertexBottom, rightVertexCenter, rightVertexTop, leftVertexTop, leftVertexCenter, leftVertexBottom });
SaveDebugInfo(testMesh);
// *-------*
// | |
// * *
// | |
// *-------*
MeshEdge bottomEdge = testMesh.FindMeshEdges(leftVertexBottom, rightVertexBottom)[0];
Assert.IsTrue(bottomEdge.GetNumFacesSharingEdge() == 1);
Assert.IsTrue(originalFace.NumVertices == 6);
// split the face and test the result
Face faceCreatedDuringSplit;
MeshEdge edgeCreatedDuringSplit;
testMesh.SplitFace(originalFace, rightVertexCenter, leftVertexCenter, out edgeCreatedDuringSplit, out faceCreatedDuringSplit);
SaveDebugInfo(testMesh);
// *-------*
// | |
// *-------*
// | |
// *-------*
Assert.IsTrue(edgeCreatedDuringSplit.GetNumFacesSharingEdge() == 2, "The edge we split on now has 2 faces attached to it.");
Assert.IsTrue(leftVertexCenter.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(rightVertexCenter.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(leftVertexBottom.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(leftVertexTop.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(rightVertexBottom.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(rightVertexTop.GetConnectedMeshEdgesCount() == 2, "The original vertices should still have 2 mesh edges attached to them.");
Assert.IsTrue(originalFace.NumVertices == 4, "The original face still has 4 vertices.");
Assert.IsTrue(faceCreatedDuringSplit.NumVertices == 4, "The created face has 4 vertices.");
// Unsplit the faces keeping the original face, and test the result.
testMesh.UnsplitFace(originalFace, faceCreatedDuringSplit, edgeCreatedDuringSplit);
SaveDebugInfo(testMesh);
// *-------*
// | |
// * *
// | |
// *-------*
Assert.IsTrue(originalFace.NumVertices == 6, "The original face still has 4 vertices.");
Assert.IsTrue(edgeCreatedDuringSplit.firstFaceEdge == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(edgeCreatedDuringSplit.VertexOnEnd[0] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(edgeCreatedDuringSplit.NextMeshEdgeFromEnd[0] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(edgeCreatedDuringSplit.VertexOnEnd[1] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(edgeCreatedDuringSplit.NextMeshEdgeFromEnd[1] == null, "The data for the deleted edge is all null to help debugging.");
Assert.IsTrue(faceCreatedDuringSplit.firstFaceEdge == null, "The data for the deleted face is all null to help debugging.");
Assert.IsTrue(leftVertexCenter.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
Assert.IsTrue(rightVertexCenter.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
// split the face again and test the result
testMesh.SplitFace(originalFace, rightVertexCenter, leftVertexCenter, out edgeCreatedDuringSplit, out faceCreatedDuringSplit);
Assert.IsTrue(edgeCreatedDuringSplit.GetNumFacesSharingEdge() == 2, "The edge we split on now has 2 faces attached to it.");
Assert.IsTrue(leftVertexCenter.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(rightVertexCenter.GetConnectedMeshEdgesCount() == 3, "The vertex we split on should now have 3 mesh edges attached to it.");
Assert.IsTrue(leftVertexBottom.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
Assert.IsTrue(rightVertexBottom.GetConnectedMeshEdgesCount() == 2, "The vertex we split on should now have 2 mesh edges attached to it.");
// unsplit the faces keeping the face we created and test the result
testMesh.UnsplitFace(faceCreatedDuringSplit, originalFace, edgeCreatedDuringSplit);
Assert.IsTrue(faceCreatedDuringSplit.NumVertices == 6, "The created face has 4 vertices.");
}
}