void Start()
{
this.transform = GetComponent <Transform>();
// animation
animatingCurve = CubicBezierCurve.CreateIdentity(transform.position, 50, curveMaterial);
Debug.Log("CubicBezierCurve Vertices: " + animatingCurve.vertices.Length);
Debug.Log("CubicBezierCurve Indices: " + animatingCurve.indices.Length);
// circle
const float size = 1;
float controlPointDis = CubicBezierCurvePoint.CalculateControlPointForCircle(4);
var point1 = new CubicBezierCurvePoint(new Vec3(-size, 0, 0), new Vec3(-size, controlPointDis, 0));
var point2 = new CubicBezierCurvePoint(new Vec3(0, size, 0), new Vec3(-controlPointDis, size, 0));
circleCurve1 = new CubicBezierCurve(point1, point2, transform.position, 50, curveMaterial);
point1 = new CubicBezierCurvePoint(new Vec3(0, size, 0), new Vec3(controlPointDis, size, 0));
point2 = new CubicBezierCurvePoint(new Vec3(size, 0, 0), new Vec3(size, controlPointDis, 0));
circleCurve2 = new CubicBezierCurve(point1, point2, transform.position, 50, curveMaterial);
point1 = new CubicBezierCurvePoint(new Vec3(size, 0, 0), new Vec3(size, -controlPointDis, 0));
point2 = new CubicBezierCurvePoint(new Vec3(0, -size, 0), new Vec3(controlPointDis, -size, 0));
circleCurve3 = new CubicBezierCurve(point1, point2, transform.position, 50, curveMaterial);
point1 = new CubicBezierCurvePoint(new Vec3(0, -size, 0), new Vec3(-controlPointDis, -size, 0));
point2 = new CubicBezierCurvePoint(new Vec3(-size, 0, 0), new Vec3(-size, -controlPointDis, 0));
circleCurve4 = new CubicBezierCurve(point1, point2, transform.position, 50, curveMaterial);
}
private static void getIdentity(out CubicBezierCurvePoint point1, out CubicBezierCurvePoint point2)
{
const float size = 1;
var cpX = new Vec3(size * .6666f, 0, 0);
var pos = new Vec3(-size, 0, 0);
point1 = new CubicBezierCurvePoint(pos, pos + cpX);
pos = new Vec3(size, 0, 0);
point2 = new CubicBezierCurvePoint(pos, pos - cpX);
}
public CubicBezierCurve(CubicBezierCurvePoint point1, CubicBezierCurvePoint point2, Vec3 cameraPosition, int density, Material material)
{
this.point1 = point1;
this.point2 = point2;
this.density = density;
this.material = material;
// create mesh
int vertexCount = density;
int indexCount = density;
vertices = new Vec3[vertexCount];
normals = new Vec3[vertexCount];
uvs = new Vec2[vertexCount];
indices = new int[indexCount];
// compute mesh verts and indices
float delta = 1.0f / density;
for (int i = 0; i != density; ++i)
{
float u = i / (float)(density - 1);
vertices[i] = getPoint(u, cameraPosition, delta, out normals[i]);
uvs[i] = new Vec2(u, .5f);
indices[i] = i;
}
// set buffers
mesh = new Mesh();
mesh.MarkDynamic();
mesh.vertices = vertices.ToVector3();
mesh.uv = uvs.ToVector2();
mesh.normals = normals.ToVector3();
mesh.SetIndices(indices, MeshTopology.LineStrip, 0);
}
