// =========================================================================
private void GenerateSinglePrism(ref Mesh mesh2D, int frontIndex2D)
{
int[] triangles2D = mesh2D.triangles;
Vector3[] vertices2D = mesh2D.vertices;
List <Vector3> vertices = new List <Vector3> {
};
List <int> triangles = new List <int> {
};
// select individual triangle from triangles2D with frontIndex2D
// single triangle vertices in 2D coords
Vector3[] triVerts2D =
{
vertices2D[triangles2D[frontIndex2D * 3 + 2]],
vertices2D[triangles2D[frontIndex2D * 3 + 1]],
vertices2D[triangles2D[frontIndex2D * 3 + 0]]
};
// structure required to utilize Mattatz's circumcenter code.
List <Vertex2D> triVerts2D2 = new List <Vertex2D>();
for (int i = 0; i < 3; i++)
{
Vector3 v3D = triVerts2D[i];
Vector2 v2D = new Vector2(v3D[0], v3D[1]); // need only x & y
triVerts2D2.Add(new Vertex2D(v2D));
}
Segment2D s0 = new Segment2D(triVerts2D2[0], triVerts2D2[1]);
Segment2D s1 = new Segment2D(triVerts2D2[1], triVerts2D2[2]);
Segment2D s2 = new Segment2D(triVerts2D2[2], triVerts2D2[0]);
Triangle2D triangle2D2 = new Triangle2D(s0, s1, s2);
Vector2 center2D = triangle2D2.Circumcenter();
Vector3 center = center2D;
// translate triangle to place circumcenter at the origin
Vector3[] triVerts2Dshifted = new Vector3[3];
for (int i = 0; i < 3; i++)
{
triVerts2Dshifted[i] = triVerts2D[i] - center;
}
AddFrontFace(vertices, triangles, triVerts2Dshifted);
AddBackFace(vertices, triangles, triVerts2Dshifted);
AddSideFaces(vertices, triangles, triVerts2Dshifted);
Vector3 center3D = new Vector3(center2D[0], 0, center2D[1]);
// Create output game object
GameObject prism = new GameObject("Prism");
prism.transform.parent = gameObject.transform;
prism.tag = "Prism";
// offset is location of parent. Used to set the center of the
// block of prisms.
Vector3 offset = gameObject.transform.position;
// center3D (above) is the circumcenter of the triangle from which the
// prism is constructed.
prism.transform.position = center3D + offset;
prism.AddComponent <MeshFilter>();
prism.AddComponent <MeshRenderer>();
//prism.AddComponent<FloatScalingEffect>(); // Added scaling animation
Mesh mesh = prism.GetComponent <MeshFilter>().mesh;
mesh.vertices = vertices.ToArray();
mesh.triangles = triangles.ToArray();
//mesh.uv = new Vector2[]
// { new Vector2(0, 0), new Vector2(0, 1), new Vector2(1, 1) };
mesh.RecalculateNormals();
mesh.RecalculateBounds();
// now that we have the mesh setup, we can add colliders.
prism.AddComponent <MeshCollider>();
prism.GetComponent <MeshCollider>().convex = true;
prism.AddComponent <PrismImpact>();
prism.AddComponent <PrismMoveInterface>();
prism.GetComponent <MeshRenderer>().material = mat;
}
