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-rw-r--r--turtle2d/src/com/jogamp/graph/geom/AABBox.java299
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diff --git a/turtle2d/src/com/jogamp/graph/geom/AABBox.java b/turtle2d/src/com/jogamp/graph/geom/AABBox.java
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--- a/turtle2d/src/com/jogamp/graph/geom/AABBox.java
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-/**
- * Copyright 2010 JogAmp Community. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- * conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- * of conditions and the following disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * The views and conclusions contained in the software and documentation are those of the
- * authors and should not be interpreted as representing official policies, either expressed
- * or implied, of JogAmp Community.
- */
-package com.jogamp.graph.geom;
-
-import com.jogamp.graph.math.VectorUtil;
-
-/**
- * Axis Aligned Bounding Box. Defined by two 3D coordinates (low and high)
- * The low being the the lower left corner of the box, and the high being the upper
- * right corner of the box.
- *
- */
-public class AABBox {
- private float[] low = {Float.MAX_VALUE,Float.MAX_VALUE,Float.MAX_VALUE};
- private float[] high = {-1*Float.MAX_VALUE,-1*Float.MAX_VALUE,-1*Float.MAX_VALUE};
- private float[] center = new float[3];
-
- /** Create a Axis Aligned bounding box (AABBox)
- * where the low and and high MAX float Values.
- */
- public AABBox() {}
-
- /** Create an AABBox specifying the coordinates
- * of the low and high
- * @param lx min x-coordinate
- * @param ly min y-coordnate
- * @param lz min z-coordinate
- * @param hx max x-coordinate
- * @param hy max y-coordinate
- * @param hz max z-coordinate
- */
- public AABBox(float lx, float ly, float lz,
- float hx, float hy, float hz)
- {
- setLow(lx, ly, lz);
- setHigh(hx, hy, hz);
-
- computeCenter();
- }
-
- /** Create a AABBox defining the low and high
- * @param low min xyz-coordinates
- * @param high max xyz-coordinates
- */
- public AABBox(float[] low, float[] high)
- {
- this.low = low;
- this.high = high;
-
- computeCenter();
- }
-
- /** Get the max xyz-coordinates
- * @return a float array containing the max xyz coordinates
- */
- public float[] getHigh()
- {
- return high;
- }
-
- private void setHigh(float hx, float hy, float hz)
- {
- this.high[0] = hx;
- this.high[1] = hy;
- this.high[2] = hz;
- }
-
- /** Get the min xyz-coordinates
- * @return a float array containing the min xyz coordinates
- */
- public float[] getLow()
- {
- return low;
- }
-
- private void setLow(float lx, float ly, float lz)
- {
- this.low[0] = lx;
- this.low[1] = ly;
- this.low[2] = lz;
- }
-
- /** Resize the AABBox to encapsulate another AABox
- * @param newBox AABBox to be encapsulated in
- */
- public void resize(AABBox newBox)
- {
- float[] newLow = newBox.getLow();
- float[] newHigh = newBox.getHigh();
-
- /** test low */
- if (newLow[0] < low[0])
- low[0] = newLow[0];
- if (newLow[1] < low[1])
- low[1] = newLow[1];
- if (newLow[2] < low[2])
- low[2] = newLow[2];
-
- /** test high */
- if (newHigh[0] > high[0])
- high[0] = newHigh[0];
- if (newHigh[1] > high[1])
- high[1] = newHigh[1];
- if (newHigh[2] > high[2])
- high[2] = newHigh[2];
-
- computeCenter();
- }
-
- private void computeCenter()
- {
- center[0] = (high[0] + low[0])/2;
- center[1] = (high[1] + low[1])/2;
- center[2] = (high[2] + low[2])/2;
- }
-
- /** Resize the AABBox to encapsulate the passed
- * xyz-coordinates.
- * @param x x-axis coordinate value
- * @param y y-axis coordinate value
- * @param z z-axis coordinate value
- */
- public void resize(float x, float y, float z)
- {
- /** test low */
- if (x < low[0])
- low[0] = x;
- if (y < low[1])
- low[1] = y;
- if (z < low[2])
- low[2] = z;
-
- /** test high */
- if (x > high[0])
- high[0] = x;
- if (y > high[1])
- high[1] = y;
- if (z > high[2])
- high[2] = z;
-
- computeCenter();
- }
-
- /** Check if the x & y coordinates are bounded/contained
- * by this AABBox
- * @param x x-axis coordinate value
- * @param y y-axis coordinate value
- * @return true if x belong to (low.x, high.x) and
- * y belong to (low.y, high.y)
- */
- public boolean contains(float x, float y){
- if(x<low[0] || x>high[0]){
- return false;
- }
- if(y<low[1]|| y>high[1]){
- return false;
- }
- return true;
- }
-
- /** Check if the xyz coordinates are bounded/contained
- * by this AABBox.
- * @param x x-axis coordinate value
- * @param y y-axis coordinate value
- * @param z z-axis coordinate value
- * @return true if x belong to (low.x, high.x) and
- * y belong to (low.y, high.y) and z belong to (low.z, high.z)
- */
- public boolean contains(float x, float y, float z){
- if(x<low[0] || x>high[0]){
- return false;
- }
- if(y<low[1]|| y>high[1]){
- return false;
- }
- if(z<low[2] || z>high[2]){
- return false;
- }
- return true;
- }
-
- /** Check if there is a common region between this AABBox and the passed
- * 2D region irrespective of z range
- * @param x lower left x-coord
- * @param y lower left y-coord
- * @param w width
- * @param h hight
- * @return true if this AABBox might have a common region with this 2D region
- */
- public boolean intersects(float x, float y, float w, float h) {
- if (w <= 0 || h <= 0) {
- return false;
- }
-
- final float _w = getWidth();
- final float _h = getHeight();
- if (_w <= 0 || _h <= 0) {
- return false;
- }
-
- final float x0 = getMinX();
- final float y0 = getMinY();
- return (x + w > x0 &&
- y + h > y0 &&
- x < x0 + _w &&
- y < y0 + _h);
- }
-
-
- /** Get the size of the Box where the size is represented by the
- * length of the vector between low and high.
- * @return a float representing the size of the AABBox
- */
- public float getSize(){
- return VectorUtil.computeLength(low, high);
- }
-
- /**Get the Center of the AABBox
- * @return the xyz-coordinates of the center of the AABBox
- */
- public float[] getCenter() {
- return center;
- }
-
- /** Scale the AABBox by a constant
- * @param size a constant float value
- */
- public void scale(float size) {
- float[] diffH = new float[3];
- diffH[0] = high[0] - center[0];
- diffH[1] = high[1] - center[1];
- diffH[2] = high[2] - center[2];
-
- diffH = VectorUtil.scale(diffH, size);
-
- float[] diffL = new float[3];
- diffL[0] = low[0] - center[0];
- diffL[1] = low[1] - center[1];
- diffL[2] = low[2] - center[2];
-
- diffL = VectorUtil.scale(diffL, size);
-
- high = VectorUtil.vectorAdd(center, diffH);
- low = VectorUtil.vectorAdd(center, diffL);
- }
-
- public float getMinX() {
- return low[0];
- }
-
- public float getMinY() {
- return low[1];
- }
-
- public float getWidth(){
- return high[0] - low[0];
- }
-
- public float getHeight() {
- return high[1] - low[1];
- }
-
- public float getDepth() {
- return high[2] - low[2];
- }
- public AABBox clone(){
- return new AABBox(this.low, this.high);
- }
-
- public String toString() {
- return "[ "+low[0]+"/"+low[1]+"/"+low[1]+" .. "+high[0]+"/"+high[0]+"/"+high[0]+", ctr "+
- center[0]+"/"+center[1]+"/"+center[1]+" ]";
- }
-}
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