/* * Copyright (C) 2013-2015 F(X)yz, * Sean Phillips, Jason Pollastrini and Jose Pereda * All rights reserved. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.fxyz.geometry; import java.util.stream.DoubleStream; /** * * @author Sean * @Description Just a useful data structure for X,Y,Z triplets. */ public class Point3D { public float x = 0; public float y = 0; public float z = 0; public float f = 0; // for function evaluation /* * @param X,Y,Z are all floats to align with TriangleMesh needs */ public Point3D(float x, float y, float z) { this.x = x; this.y = y; this.z = z; } public Point3D(float x, float y, float z, float f) { this.x = x; this.y = y; this.z = z; this.f = f; } public DoubleStream getCoordinates() { return DoubleStream.of(x,y,z); } public DoubleStream getCoordinates(float factor) { return DoubleStream.of(factor*x,factor*y,factor*z); } public Point3D add(Point3D point) { return add(point.x, point.y, point.z); } public Point3D add(float x, float y, float z) { return new Point3D(this.x + x, this.y + y, this.z + z); } public Point3D substract(Point3D point) { return substract(point.x, point.y, point.z); } public Point3D substract(float x, float y, float z) { return new Point3D(this.x - x, this.y - y, this.z - z); } public Point3D multiply(float factor) { return new Point3D(this.x * factor, this.y * factor, this.z * factor); } public Point3D normalize() { final float mag = magnitude(); if (mag == 0.0) { return new Point3D(0f, 0f, 0f); } return new Point3D(x / mag, y / mag, z / mag); } public float magnitude() { return (float)Math.sqrt(x * x + y * y + z * z); } public float dotProduct(Point3D point) { return dotProduct(point.x, point.y, point.z); } public float dotProduct(float x, float y, float z) { return this.x * x + this.y * y + this.z * z; } public Point3D crossProduct(Point3D point) { return crossProduct(point.x, point.y, point.z); } public Point3D crossProduct(float x, float y, float z) { return new Point3D(-this.z * y + this.y * z, this.z * x - this.x * z, -this.y * x + this.x * y); } @Override public String toString() { return "Point3D{" + "x=" + x + ", y=" + y + ", z=" + z + '}'; } @Override public int hashCode() { int hash = 7; hash = 29 * hash + Float.floatToIntBits(this.x); hash = 29 * hash + Float.floatToIntBits(this.y); hash = 29 * hash + Float.floatToIntBits(this.z); hash = 29 * hash + Float.floatToIntBits(this.f); return hash; } @Override public boolean equals(Object obj) { if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } final Point3D other = (Point3D) obj; if (Float.floatToIntBits(this.x) != Float.floatToIntBits(other.x)) { return false; } if (Float.floatToIntBits(this.y) != Float.floatToIntBits(other.y)) { return false; } if (Float.floatToIntBits(this.z) != Float.floatToIntBits(other.z)) { return false; } if (Float.floatToIntBits(this.f) != Float.floatToIntBits(other.f)) { return false; } return true; } public String toCSV() { return "" + x + ";" + y + ";" + z + ";"+f; } }