Cone constructor

Cone({ double radius = 1, double height = 1, int numSegments = 8, })

@param radius The radius of the Cone. @param height The height of the Cone. @param numSegments The number of segments to build the Cone out of.

Implementation

Cone({
  this.radius = 1,
  this.height = 1,
  this.numSegments = 8,
}):super(type: ShapeType.cone){
  if (radius < 0) {
    throw('The cylinder radiusBottom cannot be negative.');
  }

  final int N = numSegments;
  List<int> bottomface = [];
  List<Vector3> axes =[];

  vertices = [];
  faces = [];

  vertices.add(Vector3(0,height*0.5,0));
  vertices.add(Vector3(-radius * math.sin(0), -height*0.5, radius * math.cos(0)));
  bottomface.add(1);

  for(int i = 0; i < N; i++){
    final theta = ((2 * math.pi) / N)*(i+1);
    if (i < N - 1) {
      vertices.add(Vector3(-radius * math.sin(theta), -height*0.5, radius * math.cos(theta)));

      bottomface.add(i+2);
      // Face
      faces.add([0,i+2,i+1]);
    }
    else{
      faces.add([0,1,i+1]);
    }
  }
  axes.add(Vector3(0, 1, 0));
  faces.add(bottomface);

  init(vertices, faces, faceNormals, axes, boundingSphereRadius);
}