org.jgrasstools.gears.io.dxfdwg.libs.dwg.objects.DwgPolyline2D Maven / Gradle / Ivy
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/*
* JGrass - Free Open Source Java GIS http://www.jgrass.org
* (C) HydroloGIS - www.hydrologis.com
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Library General Public License as published by the Free
* Software Foundation; either version 2 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 Library General Public License for more
* details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; if not, write to the Free Foundation, Inc., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.jgrasstools.gears.io.dxfdwg.libs.dwg.objects;
import java.awt.geom.Point2D;
import java.util.Vector;
import org.jgrasstools.gears.io.dxfdwg.libs.dwg.DwgObject;
import org.jgrasstools.gears.io.dxfdwg.libs.dwg.DwgUtil;
/**
* The DwgPolyline2D class represents a DWG Polyline2D
*
* @author jmorell
*/
public class DwgPolyline2D extends DwgObject {
private int flags;
private int curveType;
private double initWidth;
private double endWidth;
private double thickness;
private double elevation;
private double[] extrusion;
private int firstVertexHandle;
private int lastVertexHandle;
private int seqendHandle;
private Point2D[] pts;
private double[] bulges;
/**
* Read a Polyline2D in the DWG format Version 15
*
* @param data Array of unsigned bytes obtained from the DWG binary file
* @param offset The current bit offset where the value begins
* @throws Exception If an unexpected bit value is found in the DWG file. Occurs
* when we are looking for LwPolylines.
*/
public void readDwgPolyline2DV15(int[] data, int offset) throws Exception {
//System.out.println("readDwgPolyline2D executing ...");
int bitPos = offset;
bitPos = readObjectHeaderV15(data, bitPos);
Vector v = DwgUtil.getBitShort(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
int flags = ((Integer)v.get(1)).intValue();
this.flags = flags;
v = DwgUtil.getBitShort(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
int ctype = ((Integer)v.get(1)).intValue();
curveType = ctype;
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
double sw = ((Double)v.get(1)).doubleValue();
initWidth = sw;
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
double ew = ((Double)v.get(1)).doubleValue();
endWidth = ew;
v = DwgUtil.testBit(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
boolean flag = ((Boolean)v.get(1)).booleanValue();
double th = 0.0;
if (!flag) {
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
th = ((Double)v.get(1)).doubleValue();
}
this.thickness = th;
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
double elev = ((Double)v.get(1)).doubleValue();
elevation = elev;
v = DwgUtil.testBit(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
flag = ((Boolean)v.get(1)).booleanValue();
double ex, ey, ez = 0.0;
if (flag) {
ex = 0.0;
ey = 0.0;
ez = 1.0;
} else {
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
ex = ((Double)v.get(1)).doubleValue();
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
ey = ((Double)v.get(1)).doubleValue();
v = DwgUtil.getBitDouble(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
ez = ((Double)v.get(1)).doubleValue();
}
extrusion = new double[]{ex, ey, ez};
bitPos = readObjectTailV15(data, bitPos);
v = DwgUtil.getHandle(data, bitPos);
bitPos = ((Integer)v.get(0)).intValue();
int[] handle = new int[v.size()-1];
for (int i=1;i