bool CheckFaceVertexAttributes(ProBuilderMesh mesh, Face face, out InvalidFaceInfo info)
{
info = default;
var positions = mesh.positionsInternal;
var normals = mesh.normalsInternal;
var tangents = mesh.tangentsInternal;
var textures = mesh.texturesInternal;
var indices = face.indexesInternal;
var distinct = face.distinctIndexesInternal;
for (int i = 0, c = indices.Length; i < c; i += 3)
{
if (Math.TriangleArea(positions[indices[i]], positions[indices[i + 1]], positions[indices[i + 2]]) < float.Epsilon)
{
info.problems += $"Degenerate Triangle {indices[i]} {indices[i+1]} {indices[i+2]}";
}
}
for (int i = 0, c = distinct.Length; i < c; ++i)
{
if (normals != null && !Math.IsNumber(normals[i]))
{
info.problems += $"normals [{i}] is NaN";
}
if (textures != null && !Math.IsNumber(textures[i]))
{
info.problems += $"uv0 [{i}] is NaN";
}
if (tangents != null && !Math.IsNumber(tangents[i]))
{
info.problems += $"tangents [{i}] is NaN";
}
}
info.position = Math.Average(positions, distinct);
return(!string.IsNullOrEmpty(info.problems));
}
public override ShapeState DoState(Event evt)
{
if (evt.type == EventType.KeyDown)
{
switch (evt.keyCode)
{
case KeyCode.Escape:
ToolManager.RestorePreviousTool();
break;
}
}
if (tool.m_LastShapeCreated != null)
{
EditShapeTool.DoEditingHandles(tool.m_LastShapeCreated, true);
}
if (evt.isMouse && HandleUtility.nearestControl == tool.controlID)
{
var res = EditorHandleUtility.FindBestPlaneAndBitangent(evt.mousePosition);
Ray ray = HandleUtility.GUIPointToWorldRay(evt.mousePosition);
float hit;
if (res.item1.Raycast(ray, out hit))
{
//Plane init
tool.m_Plane = res.item1;
tool.m_PlaneForward = res.item2;
tool.m_PlaneRight = Vector3.Cross(tool.m_Plane.normal, tool.m_PlaneForward);
var planeNormal = tool.m_Plane.normal;
var planeCenter = tool.m_Plane.normal * -tool.m_Plane.distance;
// if hit point on plane is cardinal axis and on grid, snap to grid.
if (Math.IsCardinalAxis(planeNormal))
{
const float epsilon = .00001f;
bool offGrid = false;
Vector3 snapVal = EditorSnapping.activeMoveSnapValue;
Vector3 center =
Vector3.Scale(ProBuilderSnapping.GetSnappingMaskBasedOnNormalVector(planeNormal),
planeCenter);
for (int i = 0; i < 3; i++)
{
offGrid |= Mathf.Abs(snapVal[i] % center[i]) > epsilon;
}
tool.m_IsOnGrid = !offGrid;
}
else
{
tool.m_IsOnGrid = false;
}
m_HitPosition = tool.GetPoint(ray.GetPoint(hit));
//Click has been done => Define a plane for the tool
if (evt.type == EventType.MouseDown)
{
//BB init
tool.m_BB_Origin = m_HitPosition;
tool.m_BB_HeightCorner = tool.m_BB_Origin;
tool.m_BB_OppositeCorner = tool.m_BB_Origin;
return(NextState());
}
}
else
{
m_HitPosition = Vector3.negativeInfinity;
}
}
if (!Math.IsNumber(m_HitPosition))
{
return(this);
}
tool.DoDuplicateShapePreviewHandle(m_HitPosition);
// Repaint to visualize the placement preview dot
if (evt.type == EventType.MouseMove && HandleUtility.nearestControl == tool.controlID)
{
HandleUtility.Repaint();
}
if (evt.type == EventType.Repaint)
{
if (GUIUtility.hotControl == 0 && HandleUtility.nearestControl == tool.controlID)
{
using (new Handles.DrawingScope(EditorHandleDrawing.vertexSelectedColor))
{
Handles.DotHandleCap(-1, m_HitPosition, Quaternion.identity,
HandleUtility.GetHandleSize(m_HitPosition) * 0.05f, EventType.Repaint);
}
}
}
return(this);
}