private void model1_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
int selEntityIndex = model1.GetEntityUnderMouseCursor(devDept.Graphics.RenderContextUtility.ConvertPoint(model1.GetMousePosition(e)));
if (selEntityIndex != -1)
{
Entity entity = model1.Entities[selEntityIndex];
Point3D pt;
int tri;
try
{
if (model1.FindClosestTriangle((IFace)entity, devDept.Graphics.RenderContextUtility.ConvertPoint(model1.GetMousePosition(e)), out pt, out tri) > 0)
{
IndexTriangle it = ((Mesh)entity).Triangles[tri];
// calculates normal direction of selected triangle
Point3D[] pointEnt = ((Mesh)entity).Vertices;
Triangle selT = new Triangle(pointEnt[it.V1], pointEnt[it.V2], pointEnt[it.V3]);
selT.Regen(0.1);
Sh.Direction = selT.Normal;
// shows the normal's direction like an arrow
Sh.DrawNormalDirection(pt, _readFile.Entities[_originalIndex].BoxSize.Diagonal);
model1.Entities.Regen();
model1.Invalidate();
}
}
catch { }
}
}
}
/// <summary>
/// Splits the triangles and Vertices in red/yellow/blue sections considering angularTol.
/// </summary>
private void SplitTrianglesByNormal(Mesh originalEntity, Vector3D direction, MyIndexTriangle[] originalT,
Mesh redSection, Mesh yellowSection, Mesh blueSection, int[] redPoints, int[] yellowPoints, int[] bluePoints,
ref int redT, ref int yellowT, ref int blueT)
{
for (int i = 0; i < originalT.Length; i++)
{
MyIndexTriangle it = originalT[i];
Triangle t = new Triangle(originalEntity.Vertices[it.V1], originalEntity.Vertices[it.V2],
originalEntity.Vertices[it.V3]);
t.Regen(0.1);
double angle = Vector3D.AngleBetween(direction, t.Normal);
// red section
if (Math.PI / 2 - Math.Abs(angle) > _angularTol)
{
originalT[i].Found = true;
originalT[i].Visited = true;
//sets to yellow group
originalT[i].Group = 1;
// if is yellow isn't blue/red
blueSection.Triangles[i] = null;
yellowSection.Triangles[i] = null;
//found a new red triangle
redT++;
redPoints[it.V3] = redPoints[it.V2] = redPoints[it.V1] = 1;
}
// yellow section
else if (Math.Abs(angle - Math.PI / 2) <= _angularTol)
{
//sets to yellow group
originalT[i].Group = 0;
// if is yellow isn't blue/red
blueSection.Triangles[i] = null;
redSection.Triangles[i] = null;
//found a new yellow triangle
yellowT++;
yellowPoints[it.V3] = yellowPoints[it.V2] = yellowPoints[it.V1] = 1;
}
// blue section
else
{
originalT[i].Found = true;
//originalT[i].Visited = true;
//sets to blue group
originalT[i].Group = -1;
// if is blue isn't red/yellow
redSection.Triangles[i] = null;
yellowSection.Triangles[i] = null;
//found a new blue triangle
blueT++;
bluePoints[it.V3] = bluePoints[it.V2] = bluePoints[it.V1] = 1;
}
}
}
public MyIndexTriangle(int v1, int v2, int v3, bool visited, int group, Point3D[] vertices)
: base(v1, v2, v3)
{
Visited = visited;
Group = group;
Found = false;
ReVisit = false;
Triangle t = new Triangle(vertices[V1], vertices[V2], vertices[V3]);
t.Regen(0.1);
Normal = t.Normal;
}