52 lines
1.2 KiB
Java
52 lines
1.2 KiB
Java
package ma2tetr.model;
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import ma2tetr.condition.EquilateralTriangleCondition;
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public class TetrahedronBuilder {
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private Point3D p1;
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private Point3D p2;
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private Point3D p3;
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private Point3D top;
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private double accuracy;
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public TetrahedronBuilder(Point3D top, double accuracy) {
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this.top = top;
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this.accuracy = accuracy;
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}
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public void build() {
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EquilateralTriangleBuilder trib = new EquilateralTriangleBuilder(top, 1);
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trib.build();
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p1 = trib.getP1();
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p2 = trib.getP2();
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p3 = trib.getP3();
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EquilateralTriangleCondition inv = new EquilateralTriangleCondition(p1, p2, p3);
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inv.setAccuracy(accuracy);
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if (!inv.isFulfilled()) {
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throw new RuntimeException("Unexpected error");
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}
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double c = inv.getDistance();
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double b = top.distance(p1);
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double a = Math.sqrt(Math.pow(c, 2) - Math.pow(b, 2));
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p1.setY(p1.getY() - a);
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p2.setY(p2.getY() - a);
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p3.setY(p3.getY() - a);
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}
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public Point3D getP1() {
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return p1;
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}
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public Point3D getP2() {
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return p2;
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}
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public Point3D getP3() {
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return p3;
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}
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}
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