Example 1 with Vector3
use of org.graphstream.ui.geom.Vector3 in project gs-ui-javafx by graphstream.
the class ConnectorSkeleton method pointOnShapeAndPerpendicular.
/**
* Compute a point at a given percent on the shape and push it from the shape perpendicular
* to it at a given distance in GU. The percent must be a number between 0 and 1. The result
* is stored in target and also returned.
*/
public Point3 pointOnShapeAndPerpendicular(double percent, double perpendicular, Point3 target) {
double at = percent;
if (percent > 1)
at = 1;
if (at < 0)
at = 0;
if (isCurve()) {
Point3 p0 = points.get(0);
Point3 p1 = points.get(1);
Point3 p2 = points.get(2);
Point3 p3 = points.get(3);
Vector2 perp = CubicCurve.perpendicular(p0, p1, p2, p3, at);
perp.normalize();
perp.scalarMult(perpendicular);
target.x = CubicCurve.eval(p0.x, p1.x, p2.x, p3.x, at) - perp.data[0];
target.y = CubicCurve.eval(p0.y, p1.y, p2.y, p3.y, at) - perp.data[1];
target.z = 0;
} else if (isPoly()) {
Triplet<Integer, Double, Double> triplet = wichSegment(at);
int i = triplet.i;
double sum = triplet.sum;
double ps = triplet.ps;
Vector3 dir = new Vector3(points.get(i + 1).x - points.get(i).x, points.get(i + 1).y - points.get(i).y, 0);
Vector3 perp = new Vector3(dir.data[1], -dir.data[0], 0);
perp.normalize();
perp.scalarMult(perpendicular);
dir.scalarMult(ps);
target.set(points.get(i).x + dir.data[0] + perp.data[0], points.get(i).y + dir.data[1] + perp.data[1], points.get(i).z);
} else {
Vector3 dir = new Vector3(to().x - from().x, to().y - from().y, 0);
Vector3 perp = new Vector3(dir.data[1], -dir.data[0], 0);
perp.normalize();
perp.scalarMult(perpendicular);
dir.scalarMult(at);
target.set(from().x + dir.data[0] + perp.data[0], from().y + dir.data[1] + perp.data[1], from().z);
}
return target;
}