private void copy(Bitmap src, int x, int y, int width, int height, Bitmap dest) {
int[] argbData = new int[width * height];
src.getARGB(argbData, 0, width, x, y, width, height);
for (int tx = 0; tx < dest.getWidth(); tx += width) {
for (int ty = 0; ty < dest.getHeight(); ty += height) {
dest.setARGB(argbData, 0, width, tx, ty, width, height);
}
}
}
public static Bitmap rotateImage(Bitmap oldB, int angle) {
try {
int w = oldB.getWidth();
int h = oldB.getHeight();
double angRad = (angle % 360) * (Math.PI / 180);
Bitmap newB = new Bitmap(w, h);
int[] oldD = new int[w * h];
int[] newD = new int[w * h];
oldB.getARGB(oldD, 0, w, 0, 0, w, h);
int axisX = w / 2;
int axisY = h / 2;
for (int x = 0; x < oldD.length; x++) {
int oldX = x % w;
int oldY = x / w;
int op = oldX - axisX;
int adj = oldY - axisY;
double oldT = MathUtilities.atan2(op, adj);
double rad = Math.sqrt((op * op) + (adj * adj));
double newT = oldT + angRad;
int newX = (int) MathUtilities.round((rad * Math.sin(newT)) + (double) axisX);
int newY = (int) MathUtilities.round((rad * Math.cos(newT)) + (double) axisY);
if (newX < 0 || newY < 0 || newX >= w || newY >= h) {
newD[x] = 0x00000000;
} else {
newD[x] = oldD[(newY * w) + newX];
}
}
newB.setARGB(newD, 0, w, 0, 0, w, h);
return newB;
} catch (Exception e) {
}
return null;
}
public void run() {
int ask = -1;
if (undo != null)
ask =
Dialog.ask(
"What Filter?",
new String[] {"GrayScale", "Negative", "Sephia", "Termal", "Undo Filter"},
0);
else
ask =
Dialog.ask(
"What Filter?", new String[] {"GrayScale", "Negative", "Sephia", "Termal"}, 0);
if (ask < 4) {
undo = new int[gbr.getWidth() * gbr.getHeight()];
gbr.getARGB(undo, 0, gbr.getWidth(), 0, 0, gbr.getWidth(), gbr.getHeight());
FilterImg.doit(gbr, ask);
} else if (ask == 4) {
if (undo != null) {
gbr.setARGB(undo, 0, gbr.getWidth(), 0, 0, gbr.getWidth(), gbr.getHeight());
undo = null;
}
}
latar.invalidate();
}
