/*
Copyright 2006 by Sean Luke and George Mason University
Licensed under the Academic Free License version 3.0
See the file "LICENSE" for more information
*/
package sim.portrayal.grid;
import sim.portrayal.*;
import sim.field.grid.*;
import java.awt.*;
import java.awt.geom.*;
import sim.util.*;
/**
Portrayal for hexagonal grids (each cell has six equally-distanced neighbors) with double-precision real values.
*/
public class HexaValueGridPortrayal2D extends ValueGridPortrayal2D
{
int[] xPoints = new int[6];
int[] yPoints = new int[6];
double[] xyC = new double[2];
double[] xyC_ul = new double[2];
double[] xyC_up = new double[2];
double[] xyC_ur = new double[2];
public HexaValueGridPortrayal2D()
{
super();
}
public HexaValueGridPortrayal2D(String valueName)
{
super(valueName);
}
final static void getxyC( final int x, final int y, final double xScale, final double yScale, final double tx, final double ty, final double[] xyC )
{
xyC[0] = tx + xScale * (1.5 * x + 1);
xyC[1] = ty + yScale * (1.0 + 2.0 * y + (x<0?(-x)%2:x%2) );
}
// our object to pass to the portrayal
final MutableDouble valueToPass = new MutableDouble(0);
protected void hitOrDraw(Graphics2D graphics, DrawInfo2D info, Bag putInHere)
{
final Grid2D field = (Grid2D)(this.field);
if (field==null) return;
// first question: determine the range in which we need to draw.
final int maxX = field.getWidth();
final int maxY = field.getHeight();
if (maxX == 0 || maxY == 0) return;
final double divideByX = ((maxX%2==0)?(3.0*maxX/2.0+0.5):(3.0*maxX/2.0+2.0));
final double divideByY = (1.0+2.0*maxY);
final double xScale = info.draw.width / divideByX;
final double yScale = info.draw.height / divideByY;
int startx = (int)(((info.clip.x - info.draw.x)/xScale-0.5)/1.5)-2;
int starty = (int)((info.clip.y - info.draw.y)/(yScale*2.0))-2;
int endx = /*startx +*/ (int)(((info.clip.x - info.draw.x + info.clip.width)/xScale-0.5)/1.5) + 4; // with rounding, width be as much as 1 off
int endy = /*starty +*/ (int)((info.clip.y - info.draw.y + info.clip.height)/(yScale*2.0)) + 4; // with rounding, height be as much as 1 off
//
//
// CAUTION!
//
// At some point we should triple check the math for rounding such
// that the margins are drawn properly
//
//
// next we determine if this is a DoubleGrid2D or an IntGrid2D
// final Rectangle clip = (graphics==null ? null : graphics.getClipBounds());
final boolean isDoubleGrid2D = (field instanceof DoubleGrid2D);
final double[][] doubleField = (isDoubleGrid2D ? ((DoubleGrid2D) field).field : null);
final int[][] intField = (isDoubleGrid2D ? null : ((IntGrid2D) field).field);
double xyC_x, xyC_y, xyC_ulx, xyC_uly, xyC_upx, xyC_upy, xyC_urx, xyC_ury, x0, y0, tx, ty;
if( startx < 0 ) startx = 0;
if( starty < 0 ) starty = 0;
if (endx > maxX) endx = maxX;
if (endy > maxY) endy = maxY;
for(int y=starty;y<endy;y++)
for(int x=startx;x<endx;x++)
{
//getxyC( x, y, xScale, yScale, info.draw.x, info.draw.y, xyC );
//getxyC( field.ulx(x,y), field.uly(x,y), xScale, yScale, info.draw.x, info.draw.y, xyC_ul );
//getxyC( field.upx(x,y), field.upy(x,y), xScale, yScale, info.draw.x, info.draw.y, xyC_up );
//getxyC( field.urx(x,y), field.ury(x,y), xScale, yScale, info.draw.x, info.draw.y, xyC_ur );
x0 = x; y0 = y; tx = info.draw.x; ty = info.draw.y;
xyC_x = tx + xScale * (1.5 * x0 + 1);
xyC_y = ty + yScale * (1.0 + 2.0 * y0 + (x0<0?(-x0)%2:x0%2) );
x0 = field.ulx(x,y); y0 = field.uly(x,y); tx = info.draw.x; ty = info.draw.y;
xyC_ulx = tx + xScale * (1.5 * x0 + 1);
xyC_uly = ty + yScale * (1.0 + 2.0 * y0 + (x0<0?(-x0)%2:x0%2) );
x0 = field.upx(x,y); y0 = field.upy(x,y); tx = info.draw.x; ty = info.draw.y;
xyC_upx = tx + xScale * (1.5 * x0 + 1);
xyC_upy = ty + yScale * (1.0 + 2.0 * y0 + (x0<0?(-x0)%2:x0%2) );
x0 = field.urx(x,y); y0 = field.ury(x,y); tx = info.draw.x; ty = info.draw.y;
xyC_urx = tx + xScale * (1.5 * x0 + 1);
xyC_ury = ty + yScale * (1.0 + 2.0 * y0 + (x0<0?(-x0)%2:x0%2) );
xPoints[0] = (int)(xyC_urx-0.5*xScale);
yPoints[0] = (int)(xyC_ury+yScale);
xPoints[1] = (int)(xyC_upx+0.5*xScale);
yPoints[1] = (int)(xyC_upy+yScale);
xPoints[2] = (int)(xyC_upx-0.5*xScale);
yPoints[2] = (int)(xyC_upy+yScale);
xPoints[3] = (int)(xyC_ulx+0.5*xScale);
yPoints[3] = (int)(xyC_uly+yScale);
xPoints[4] = (int)(xyC_x-0.5*xScale);
yPoints[4] = (int)(xyC_y+yScale);
xPoints[5] = (int)(xyC_x+0.5*xScale);
yPoints[5] = (int)(xyC_y+yScale);
if (graphics == null)
{
generalPath.reset();
generalPath.moveTo( xPoints[0], yPoints[0] );
for( int i = 1 ; i < 6 ; i++ )
generalPath.lineTo( xPoints[i], yPoints[i] );
generalPath.closePath();
Area area = new Area( generalPath );
if( area.intersects( info.clip.x, info.clip.y, info.clip.width, info.clip.height ) )
{
valueToPass.val = isDoubleGrid2D ? doubleField[x][y] : intField[x][y];
putInHere.add( getWrapper(valueToPass.val, x, y) );
}
}
else
{
Color c = map.getColor(isDoubleGrid2D ? doubleField[x][y] : intField[x][y]);
if (c.getAlpha() == 0) continue;
graphics.setColor(c);
// MacOS X 10.3 Panther has a bug which resets the clip, YUCK
// graphics.setClip(clip);
graphics.fillPolygon(xPoints,yPoints,6);
}
}
}
GeneralPath generalPath = new GeneralPath();
}