public void setField(Object field) {
super.setField(field);
ObjectGrid2D og = (ObjectGrid2D) field;
grid = new DoubleGrid2D(og.getWidth(), og.getHeight());
valueGridPortrayal.setField(grid);
}
public void draw(Object object, Graphics2D graphics, DrawInfo2D info) {
if (field == null) return;
ObjectGrid2D ogrid = (ObjectGrid2D) field;
// compute what area to do (as usual)
final int maxX = ogrid.getWidth();
final int maxY = ogrid.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
// double precomputedWidth = -1; // see discussion further below
// double precomputedHeight = -1; // see discussion further below
//
//
// CAUTION!
//
// At some point we should triple check the math for rounding such
// that the margins are drawn properly
//
//
// Horizontal hexagons are staggered. This complicates computations. Thus
// if you have a M x N grid scaled to SCALE, then
// your height is (N + 0.5) * SCALE
// and your width is ((M - 1) * (3/4) + 1) * HEXAGONAL_RATIO * SCALE
// we invert these calculations here to compute the rough width and height
// for the newinfo here. Additionally, because the original screen sizes were likely
// converted from floats to ints, there's a round down there, so we round up to
// compensate. This usually results in nice circles.
if (endx > maxX) endx = maxX;
if (endy > maxY) endy = maxY;
if (startx < 0) startx = 0;
if (starty < 0) starty = 0;
// convert the object grid into a double grid
for (int x = startx; x < endx; x++) {
double[] gridx = grid.field[x];
Object[] ogridx = ogrid.field[x];
for (int y = starty; y < endy; y++) gridx[y] = doubleValue(ogridx[y]);
}
// now ask the ValueGridPortrayal to draw it!
valueGridPortrayal.draw(object /* doesn't matter */, graphics, info);
}