public static Point2D operator /(Point2D obj, float div)
{
Point2D result = new Point2D();
result.x = obj.x / div;
result.y = obj.y / div;
return result;
}
public static Point2D operator *(float mul, Point2D obj)
{
Point2D result = new Point2D();
result.x = obj.x * mul;
result.y = obj.y * mul;
return result;
}
public static Point2D operator -(Point2D obj1, Point2D obj2)
{
Point2D result = new Point2D();
result.x = obj1.x - obj2.x;
result.y = obj1.y - obj2.y;
return result;
}
Point2D HermiteInterpolate(float t, Point2D P0, Point2D P1, Point2D P2, Point2D P3)
{
Point2D m0 = (P1 - P0) * (1 + bias) * (1 - tension) * 0.5f + (P2 - P1) * (1 - bias) * (1 - tension) * 0.5f;
Point2D m1 = (P2 - P1) * (1 + bias) * (1 - tension) * 0.5f + (P3 - P2) * (1 - bias) * (1 - tension) * 0.5f;
float mu2 = t * t;
float mu3 = mu2 * t;
float a0 = 2 * mu3 - 3 * mu2 + 1;
float a1 = mu3 - 2 * mu2 + t;
float a2 = mu3 - mu2;
float a3 = -2 * mu3 + 3 * mu2;
return (a0 * P1 + a1 * m0 + a2 * m1 + a3 * P2);
}
public KeyFrame(float t, Point2D point)
{
this.t = t;
this.point = point;
}
public KeyFrame(float t, float x, float y)
{
this.t = t;
point = new Point2D(x, y);
}
