public override void HandleRotationChanged(double angleX, double angleY)
{
var a = new Vec3(0,0,0);
var b = new Vec3(0,0,1);
foreach(var f in this.model.Faces){
var n = f.GetNormal();
LinearAlgebra.PlaneVectorIntersection(a, b, n, f.GetVertexPositions().First());
}
base.HandleRotationChanged(angleX, angleY);
}
private void setSliderValue(double val)
{
this.toRender = this.modelClone.Clone();
this.faceToElevate = this.toRender.Faces.First();
this.faceCenter = this.toRender.GetFaceCenter(this.faceToElevate);
this.toRender.RemoveFace(this.faceToElevate);
Vec3 newVertex = this.faceCenter.Extend(val);
var faceVertexIndices = this.faceToElevate.GetVertexIndices();
int ct = faceVertexIndices.Count;
for (int i = 0; i < ct; i++) {
int idx1 = faceVertexIndices[i];
int idx2 = faceVertexIndices[(i + 1) % ct];
int vIndex = this.toRender.AddVertex(newVertex);
this.toRender.AddFace(idx1, idx2, vIndex);
this.toRender.AddFace(vIndex, idx2, idx1);
}
//Get the center of the face
//Determine the new vertex position
//Add n new triangular faces
//remove the old face
}
public int AddVertex(Vec3 newVertex)
{
this.vertices.Add(newVertex);
return this.vertices.Count - 1;
}
internal double DotProduct(Vec3 vec3)
{
return this.X * vec3.X + this.Y * vec3.Y + this.Z * vec3.Z;
}
internal double Dist(Vec3 b)
{
return Math.Sqrt((b.X - this.X).Sqrd() + (b.Y - this.Y).Sqrd());
}
internal Vec3 CrossProduct(Vec3 v)
{
double x = this.Y * v.Z - this.Z * v.Y;
double y = this.Z * v.X - this.X * v.Z;
double z = this.X * v.Y - this.Y * v.X;
return new Vec3(x, y, z);
}
internal double Dist(Vec3 b)
{
return(Math.Sqrt((b.X - this.X).Sqrd() + (b.Y - this.Y).Sqrd()));
}
internal double DotProduct(Vec3 vec3)
{
return(this.X * vec3.X + this.Y * vec3.Y + this.Z * vec3.Z);
}
public static SegmentPlaneIntersection PlaneVectorIntersection(Vec3 a, Vec3 b, Vec3 planeNormal, Vec3 planePoint)
{
Vec3 u = b - a;
Vec3 w = a - planePoint;
double D = planeNormal.DotProduct(u);
double N = -planeNormal.DotProduct(w);
if (Math.Abs(D) < EPS)
{
if (N == 0)
{
return(SegmentPlaneIntersection.SegmentLiesInPlane);
}
else
{
return(SegmentPlaneIntersection.NoIntersection);
}
}
double sI = N / D;
if (sI < 0 || sI > 1)
{
return(SegmentPlaneIntersection.NoIntersection);
}
return(SegmentPlaneIntersection.Intersection);
}