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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* PDFStitching.java
* ---------------
*/
package org.jpedal.function;
/**
* Class to handle Type 3 shading (Stitching) in PDF
*/
public class PDFStitching extends PDFGenericFunction implements PDFFunction {
/**
* composed of other Functions
*/
private PDFFunction[] functions;
private float[] bounds;
public PDFStitching(final PDFFunction[] functions, final float[] encode, final float[] bounds, final float[] domain, final float[] range) {
//setup global values needed
super(domain, range);
if (bounds!= null) {
this.bounds = bounds;
}
if (encode!= null) {
this.encode = encode;
}
if(functions!=null) {
this.functions = functions;
}
//n = encode.length/2;
}
/**
* Calculate shading for current location
*
* @param values input values for shading calculation
* @return float[] containing the color values for shading at this point
*/
@Override
public float[] compute(final float[] values){
// if(functions.length == 1){
// float x = min(max(values[0],domain[0]),domain[1]);
// x = encode[0]+(x-domain[0])*(encode[1]-encode[0])/(domain[1]-domain[0]);
// float[] vv = functions[0].compute(new float[]{x});
// vv[0] = 1-vv[0];
// return vv;
// }
//take raw input number
final float x=min(max(values[0],domain[0*2]),domain[0*2+1]);
//hack for error in a PDF
if(bounds==null) {
bounds = new float[0];
}
//see if value lies outside a boundary
int subi=bounds.length-1;
for(; subi>=0; subi--) {
if (x >= bounds[subi]) {
break;
}
}
subi++;
//if it does, truncate it
final float[] subinput = new float[1];
float xmin=domain[0],xmax=domain[1];
if(subi>0) {
xmin = (bounds[subi - 1]);
}
if(subi=0; subi--){
if (x >= bounds[subi]) {
break;
}
}
subi++;
//if it does, truncate it
final float[] subinput = new float[1];
float xmin=domain[0],xmax=domain[1];
if(subi>0) {
xmin = (bounds[subi - 1]);
}
if(subi