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package bezier.transforms;
import bezier.geom.TDHPoint;
public class TDHPointRotation extends TDHRotation {
public final double x0;
public final double y0;
public TDHPointRotation(double theta, double x0, double y0) {
super(theta);
this.x0 = x0;
this.y0 = y0;
}
@Override
public TDHTransformType type() {
return TDHTransformType.ROTATION;
}
@Override
public TDHPoint transform(TDHPoint punkt) {
double x1 = (punkt.x * Math.cos(theta)) - (punkt.y * Math.sin(theta));
double y1 = (punkt.x * Math.sin(theta)) - (punkt.y * Math.cos(theta));
double x2 = (-x0 * Math.cos(theta)) + (y0 * Math.sin(theta)) + x0;
double y2 = (-x0 * Math.sin(theta)) - (y0 * Math.cos(theta)) + y0;
double x = x1 + (punkt.z * x2);
double y = y1 + (punkt.z * y2);
return new TDHPoint(x, y, punkt.z);
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
long temp;
temp = Double.doubleToLongBits(x0);
result = prime * result + (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(y0);
result = prime * result + (int) (temp ^ (temp >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!super.equals(obj))
return false;
if (getClass() != obj.getClass())
return false;
TDHPointRotation other = (TDHPointRotation) obj;
if (Double.doubleToLongBits(x0) != Double.doubleToLongBits(other.x0))
return false;
if (Double.doubleToLongBits(y0) != Double.doubleToLongBits(other.y0))
return false;
return true;
}
@Override
public String toString() {
return "TDHPointRotation [x0=" + x0 + ", y0=" + y0 + "]";
}
}
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