one.empty3.apps.opad.Lines Maven / Gradle / Ivy

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3D rendering engine. Plus modeling. Expected glsl textures 3d and 2d rendering

There is a newer version: 2024.5.10

/*
 * 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.
 */

package one.empty3.apps.opad;

import one.empty3.library.LineSegment;
import one.empty3.library.Point3D;
import one.empty3.library.core.nurbs.ParametricCurve;

public class Lines extends ParametricCurve {
    private final Path path;

    public Lines(Path path) {
        this.path = path;
    }

  public double remainder(double t, double n) {
      double sign = Math.signum(t*n);
      if(sign!=0) {
          double N = Math. abs(n) ;
          double T = Math. abs(t);
          double r = (T/N-(int)( T*N)) /((int) N) ;
               return r;
         } 
     return n==0?Double.NaN:0;
  } 
    @Override
    public Point3D calculerPoint3D(double t) {
        try {
            int segm = (int) (t * path.size());

            if (path.size() >= 2) {
                LineSegment segmentDroite = new LineSegment(path.get(segm), path.get(segm + 1));

                double v = remainder(t * path.size(), segm);

                return segmentDroite.calculerPoint3D(v);
            } else
                return Point3D.O0;
        } catch (Exception ex) {
            return Point3D.O0;
        }
    }

    @Override
    public Point3D calculerVitesse3D(double t) {
        return null;
    }
}