eu.mihosoft.vrl.v3d.ext.openjfx.shape3d.symbolic.SubdividedPointArray Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jcsg Show documentation
Show all versions of jcsg Show documentation
Java implementation of BSP based CSG (Constructive Solid Geometry)
/*
* Copyright (c) 2010, 2014, Oracle and/or its affiliates.
* All rights reserved. Use is subject to license terms.
*
* This file is available and licensed under the following license:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Oracle Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
package eu.mihosoft.vrl.v3d.ext.openjfx.shape3d.symbolic;
import eu.mihosoft.vrl.v3d.ext.openjfx.shape3d.SubdivisionMesh;
import java.util.Arrays;
public class SubdividedPointArray extends SymbolicPointArray {
private final float[] controlPoints; // points of the previous subdivision level
private final int[][] controlInds; // indices corresponding to controlPoints
private final float[][] controlFactors; // factors corresponding to controlPoints
private final int[][] inds;
private final float[][] factors;
private final SubdivisionMesh.BoundaryMode boundaryMode;
private int currPoint = 0;
public SubdividedPointArray(SymbolicPointArray controlPointArray, int numPoints, SubdivisionMesh.BoundaryMode boundaryMode) {
super(new float[NUM_COMPONENTS_PER_POINT * numPoints]);
this.controlPoints = controlPointArray.data;
this.controlInds = new int[numPoints][];
this.controlFactors = new float[numPoints][];
this.inds = new int[numPoints][];
this.factors = new float[numPoints][];
this.boundaryMode = boundaryMode;
}
public int addFacePoint(int[] vertices) {
controlInds[currPoint] = vertices;
controlFactors[currPoint] = new float[vertices.length];
Arrays.fill(controlFactors[currPoint], 1.0f/vertices.length);
inds[currPoint] = new int[0];
factors[currPoint] = new float[0];
return currPoint++;
}
public int addEdgePoint(int[] facePoints, int fromPoint, int toPoint, boolean isBoundary) {
if (isBoundary) {
controlInds[currPoint] = new int[] {fromPoint, toPoint};
controlFactors[currPoint] = new float[] {0.5f, 0.5f};
inds[currPoint] = new int[0];
factors[currPoint] = new float[0];
} else {
int n = facePoints.length + 2;
controlInds[currPoint] = new int[] {fromPoint, toPoint};
controlFactors[currPoint] = new float[] {1.0f/n, 1.0f/n};
inds[currPoint] = facePoints;
factors[currPoint] = new float[facePoints.length];
Arrays.fill(factors[currPoint], 1.0f/n);
}
return currPoint++;
}
public int addControlPoint(int[] facePoints, int[] edgePoints, int[] fromEdgePoints, int[] toEdgePoints, boolean[] isEdgeBoundary, int origPoint, boolean isBoundary, boolean hasInternalEdge) {
if (isBoundary) {
if ((boundaryMode == SubdivisionMesh.BoundaryMode.CREASE_EDGES) || hasInternalEdge) {
controlInds[currPoint] = new int[] {origPoint};
controlFactors[currPoint] = new float[] {0.5f};
int numBoundaryEdges = 0;
for (int i = 0; i < edgePoints.length; i++) {
if (isEdgeBoundary[i]) {
numBoundaryEdges++;
}
}
inds[currPoint] = new int[numBoundaryEdges];
factors[currPoint] = new float[numBoundaryEdges];
int boundaryEdgeInd = 0;
for (int i = 0; i < edgePoints.length; i++) {
if (isEdgeBoundary[i]) {
inds[currPoint][boundaryEdgeInd] = edgePoints[i];
factors[currPoint][boundaryEdgeInd] = 0.25f;
boundaryEdgeInd++;
}
}
} else {
controlInds[currPoint] = new int[] {origPoint};
controlFactors[currPoint] = new float[] {1.0f};
inds[currPoint] = new int[0];
factors[currPoint] = new float[0];
}
} else {
int n = facePoints.length;
controlInds[currPoint] = new int[1 + edgePoints.length*2];
controlFactors[currPoint] = new float[1 + edgePoints.length*2];
controlInds[currPoint][0] = origPoint;
controlFactors[currPoint][0] = (n - 3.0f) / n;
for (int i = 0; i < edgePoints.length; i++) {
controlInds[currPoint][1+2*i] = fromEdgePoints[i];
controlFactors[currPoint][1+2*i] = 1.0f/(n * n);
controlInds[currPoint][1+2*i+1] = toEdgePoints[i];
controlFactors[currPoint][1+2*i+1] = 1.0f/(n * n);
}
inds[currPoint] = facePoints;
factors[currPoint] = new float[facePoints.length];
Arrays.fill(factors[currPoint], 1.0f/(n * n));
}
return currPoint++;
}
@Override
public void update() {
int ci;
float f;
float x, y, z;
for (int i = 0; i < numPoints; i++) {
x = y = z = 0.0f;
for (int j = 0; j < controlInds[i].length; j++) {
ci = 3 * controlInds[i][j];
f = controlFactors[i][j];
x += controlPoints[ci] * f;
y += controlPoints[ci + 1] * f;
z += controlPoints[ci + 2] * f;
}
for (int j = 0; j < inds[i].length; j++) {
ci = 3 * inds[i][j];
f = factors[i][j];
x += data[ci] * f;
y += data[ci + 1] * f;
z += data[ci + 2] * f;
}
data[3*i] = x;
data[3*i+1] = y;
data[3*i+2] = z;
}
}
}