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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
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* | PlantUML : a free UML diagram generator
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package net.sourceforge.plantuml.klimt.geom;
public class XCubicCurve2D {
public double x1;
public double y1;
public double ctrlx1;
public double ctrly1;
public double ctrlx2;
public double ctrly2;
public double x2;
public double y2;
public static XCubicCurve2D none() {
return new XCubicCurve2D(0, 0, 0, 0, 0, 0, 0, 0);
}
public XCubicCurve2D(double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2, double x2,
double y2) {
this.x1 = x1;
this.y1 = y1;
this.ctrlx1 = ctrlx1;
this.ctrly1 = ctrly1;
this.ctrlx2 = ctrlx2;
this.ctrly2 = ctrly2;
this.x2 = x2;
this.y2 = y2;
}
public XPoint2D getP1() {
return new XPoint2D(x1, y1);
}
public XPoint2D getP2() {
return new XPoint2D(x2, y2);
}
public void setCurve(double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2, double x2,
double y2) {
this.x1 = x1;
this.y1 = y1;
this.ctrlx1 = ctrlx1;
this.ctrly1 = ctrly1;
this.ctrlx2 = ctrlx2;
this.ctrly2 = ctrly2;
this.x2 = x2;
this.y2 = y2;
}
public double getLength() {
final double dx = this.x2 - this.x1;
final double dy = this.y2 - this.y1;
return Math.sqrt(dx * dx + dy * dy);
}
public void setCurve(XCubicCurve2D other) {
setCurve(other.x1, other.y1, other.ctrlx1, other.ctrly1, other.ctrlx2, other.ctrly2, other.ctrlx2,
other.ctrly2);
}
public void subdivide(XCubicCurve2D left, XCubicCurve2D right) {
double x1 = this.getX1();
double y1 = this.getY1();
double ctrlx1 = this.getCtrlX1();
double ctrly1 = this.getCtrlY1();
double ctrlx2 = this.getCtrlX2();
double ctrly2 = this.getCtrlY2();
double x2 = this.getX2();
double y2 = this.getY2();
double centerx = (ctrlx1 + ctrlx2) / 2.0;
double centery = (ctrly1 + ctrly2) / 2.0;
ctrlx1 = (x1 + ctrlx1) / 2.0;
ctrly1 = (y1 + ctrly1) / 2.0;
ctrlx2 = (x2 + ctrlx2) / 2.0;
ctrly2 = (y2 + ctrly2) / 2.0;
double ctrlx12 = (ctrlx1 + centerx) / 2.0;
double ctrly12 = (ctrly1 + centery) / 2.0;
double ctrlx21 = (ctrlx2 + centerx) / 2.0;
double ctrly21 = (ctrly2 + centery) / 2.0;
centerx = (ctrlx12 + ctrlx21) / 2.0;
centery = (ctrly12 + ctrly21) / 2.0;
if (left != null)
left.setCurve(x1, y1, ctrlx1, ctrly1, ctrlx12, ctrly12, centerx, centery);
if (right != null)
right.setCurve(centerx, centery, ctrlx21, ctrly21, ctrlx2, ctrly2, x2, y2);
}
public final double getX1() {
return x1;
}
public final double getY1() {
return y1;
}
public final double getCtrlX1() {
return ctrlx1;
}
public final double getCtrlY1() {
return ctrly1;
}
public final double getCtrlX2() {
return ctrlx2;
}
public final double getCtrlY2() {
return ctrly2;
}
public final double getX2() {
return x2;
}
public final double getY2() {
return y2;
}
public XPoint2D getCtrlP1() {
return new XPoint2D(ctrlx1, ctrly1);
}
public XPoint2D getCtrlP2() {
return new XPoint2D(ctrlx2, ctrly2);
}
public double getFlatnessSq() {
return Math.max(XLine2D.ptSegDistSq(x1, y1, x2, y2, ctrlx1, ctrly1),
XLine2D.ptSegDistSq(x1, y1, x2, y2, ctrlx2, ctrly2));
}
public double getFlatness() {
return getFlatness(getX1(), getY1(), getCtrlX1(), getCtrlY1(), getCtrlX2(), getCtrlY2(), getX2(), getY2());
}
private static double getFlatness(double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2,
double x2, double y2) {
return Math.sqrt(getFlatnessSq(x1, y1, ctrlx1, ctrly1, ctrlx2, ctrly2, x2, y2));
}
private static double getFlatnessSq(double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2,
double ctrly2, double x2, double y2) {
return Math.max(XLine2D.ptSegDistSq(x1, y1, x2, y2, ctrlx1, ctrly1),
XLine2D.ptSegDistSq(x1, y1, x2, y2, ctrlx2, ctrly2));
}
}