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3D rendering engine. Plus modeling. Expected glsl textures 3d and 2d rendering
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/*
 * Copyright (c) 2023. Manuel Daniel Dahmen
 *
 *
 *    Copyright 2012-2023 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 : * GNU GPL v3
 * 
 * author Manuel Dahmen [email protected]_
 * 

 * Creation time 2015-03-25
 * 
 * *
 */
package one.empty3.library.core.tribase;

import one.empty3.library.ColorTexture;
import one.empty3.library.Point3D;
import one.empty3.library.StructureMatrix;
import one.empty3.library.core.nurbs.CourbeParametriquePolynomialeBezier;
import one.empty3.library.core.nurbs.FctXY;
import one.empty3.library.core.nurbs.ParametricCurve;
import one.empty3.library.core.nurbs.ParametricSurface;

import java.awt.*;
import java.util.logging.Level;
import java.util.logging.Logger;

public class TubulaireN2 extends ParametricSurface {
    public double TAN_FCT_INCR = 0.00000001;
    public double NORM_FCT_INCR = 0.00001;

    protected StructureMatrix soulCurve = new StructureMatrix<>(0, ParametricCurve.class);
    protected StructureMatrix diameterFunction = new StructureMatrix<>(0, FctXY.class);
    private Point3D lastTan = null;

    public TubulaireN2() {
        super();
        soulCurve.setElem(new CourbeParametriquePolynomialeBezier());
        diameterFunction.setElem(new FctXY());
        declareProperties();
    }

    public TubulaireN2(ParametricCurve curve, double diameter) {
        soulCurve.setElem(curve);
        soulCurve.getElem().texture(new ColorTexture(Color.BLACK));
        FctXY fctXY = new FctXY();
        fctXY.setFormulaX("" + diameter);
        diameterFunction.setElem(fctXY);
        declareProperties();
    }

    public Point3D calculerNormale(double t) {
        Point3D n = calculerTangente(t + NORM_FCT_INCR).moins(calculerTangente(t)).mult(1.0 / NORM_FCT_INCR);
        if (n.equals(Point3D.O0)||n.isAnyNaN()) {
            int i = 0;
            while (i < 3 && (n.equals(Point3D.O0) ||
                    n.isAnyNaN())) {
                n = calculerTangente(t).prodVect(
                        new Point3D(i == 0 ? 1.0 : 0.0, i == 1 ? 1.0 : 0.0, i == 2 ? 1.0 : 0.0));

                i++;
            }

        }
        return n;
    }

    public Point3D[] calculerAxes(double t, Point3D tangent, int iMin) {

        Point3D n = new Point3D(2., 2., 2.);

        Point3D axe2;
        if (n.norme() != 1.0) {

            int i = 0;
            while (i < 3  && (n.dot(tangent) != 0.0 ||
                    n.isAnyNaN() || i= 1.0)
            Logger.getAnonymousLogger().log(Level.INFO, "Error in TubulaireN2 vectPerp; px.cross.py.norme!=1");


        return vecteurs[j];
    }

    @Override
    public Point3D calculerPoint3D(double u, double v) {
        Point3D[] vectPerp = vectPerp(u, v);
        return soulCurve.getElem().calculerPoint3D(u).plus(
                vectPerp[1].mult(diameterFunction.getElem().result(u) * Math.cos(2 * Math.PI * v))).plus(
                vectPerp[2].mult(diameterFunction.getElem().result(u) * Math.sin(2 * Math.PI * v)));
    }

    /*old
        @Override
        public Point3D calculerPoint3D(double u, double v) {
            Point3D[] vectPerp = vectPerp(u);
            return soulCurve.getElem().calculerPoint3D(u).plus(
                    vectPerp[1].mult(diameterFunction.getElem().result(u) * Math.cos(2 * Math.PI * v))).plus(
                    vectPerp[2].mult(diameterFunction.getElem().result(u) * Math.sin(2 * Math.PI * v)));
        }
    */
    @Override
    public void declareProperties() {
        super.declareProperties();
        soulCurve.getElem().declareProperties();
        diameterFunction.getElem().declareProperties();
        getDeclaredDataStructure().put("soulCurve/Ame de la courbe", soulCurve);
        getDeclaredDataStructure().put("diameterFunction/Fonction de positon sur la courbe - diamètre (var='x')", diameterFunction);

    }

    public StructureMatrix getSoulCurve() {
        return soulCurve;
    }


    public StructureMatrix getDiameterFunction() {
        return diameterFunction;
    }


    public void setSoulCurve(ParametricCurve b) {
        this.soulCurve.setElem(b);
    }

    public void setDiameter(double d) {
        FctXY fctXY = new FctXY();
        fctXY.setFormulaX("" + d);
        this.diameterFunction.setElem(fctXY);
    }
}