one.empty3.library.core.nurbs.SurfaceParametricPolygonalBezier Maven / Gradle / Ivy

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3D rendering engine. Plus modelling. Expected glsl textures 3d and 2d rendering3D primitives, and a lot of scenes' samples to test.+ Game Jogl reworked, Calculator (numbers and vectors). Java code parser implementation starts (<=1.2)

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/*
 *
 *  * Copyright (c) 2024. Manuel Daniel Dahmen
 *  *
 *  *
 *  *    Copyright 2024 Manuel Daniel Dahmen
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 *
 *
 */

/*__
 * *
 * Global license : * Microsoft Public Licence
 * 
 * author Manuel Dahmen [email protected]_
 * 

 * Creation time 17-sept.-2014
 * 
 * *
 */
package one.empty3.library.core.nurbs;

import one.empty3.library.Point3D;
import one.empty3.library.StructureMatrix;

/*__
 * Meta Description missing
 * @author Manuel Dahmen [email protected]
 */
public class SurfaceParametricPolygonalBezier extends ParametricSurface implements SurfaceElem {

    protected final StructureMatrix coefficients;
    protected StructureMatrix power1 = new StructureMatrix<>(0, Integer.class), power2 = new StructureMatrix<>(0, Integer.class);

    public SurfaceParametricPolygonalBezier(Point3D[][] coefficients) {
        this.coefficients = new StructureMatrix<>(2, Integer.class);
        this.coefficients.setAll(coefficients);
        power1.setElem(coefficients.length);
        power2.setElem(coefficients[0].length);
    }

    public double B(int i, int n, double t) {
        return factorielle(n) / factorielle(i) / factorielle(n - i)
                * Math.pow(t, i) * Math.pow(1 - t, n - i);
    }

    @Override
    public Point3D calculerPoint3D(double u, double v) {
        Point3D sum = Point3D.O0;
        for (int i = 0; i < power1.getElem(); i++) {
            for (int j = 0; j < power2.getElem(); j++) {
                sum = sum.plus(coefficients.getElem(i, j).mult(B(i, power1.getElem() - 1, u) * B(j, power2.getElem() - 1, v)));
            }
        }
        return sum;
    }

    @Override
    public Point3D calculerVitesse3D(double u, double v) {
        throw new UnsupportedOperationException("pas encore implanté");
    }

    protected double factorielle(int n) {
        double sum = 1;
        for (int i = 1; i <= n; i++) {
            sum *= i;
        }
        return sum;
    }

    public StructureMatrix getCoefficients() {
        return coefficients;
    }

    public Integer getPower1() {
        return power1.getElem();
    }

    public void setPower1(Integer power1) {
        this.power1.setElem(power1);
    }

    public Integer getPower2() {
        return power2.getElem();
    }

    public void setPower2(Integer power2) {
        this.power2.setElem(power2);
    }

    @Override
    public void declareProperties() {
        super.declareProperties();
        getDeclaredDataStructure().put("power1/degré en ligne", power1);
        getDeclaredDataStructure().put("power2/degré en colomnne", power1);
        getDeclaredDataStructure().put("coefficients", coefficients);
    }
}