/**
* Returns the area of this pixel area. This is the number of connected pixels.
*
* @return number of pixels inside this area
*/
public int area() {
int res = 0;
for (CCConnectedPixelRow myRun : _myConnectedPixelRows) {
res += myRun.length();
}
return res;
}
/**
* Returns the maximum value inside this pixel area for the given raster. You can optionally get
* the position of the maximum value by passing a reference to a vector. If this vector is null it
* will be ignored.
*
* @param theRaster the raster to check for the maximum value
* @param thePosition reference to store the position of the maximum
* @return maximum value inside the pixel row
*/
public float max(CCPixelRaster theRaster, CCVector2i thePosition) {
float myMax = 0;
int myCountMaxs = 0;
float myX = 0;
float myY = 0;
CCVector2i myTemp = new CCVector2i();
int counter = 0;
for (CCConnectedPixelRow myRow : _myConnectedPixelRows) {
counter++;
float value = myRow.max(theRaster, myTemp);
if (value > myMax) {
myMax = value;
myCountMaxs = 1;
myX = myTemp.x();
myY = myTemp.y();
if (thePosition != null) thePosition.set(myTemp);
} else if (value == myMax) {
myCountMaxs++;
myX += myTemp.x();
myY += myTemp.y();
}
}
if (thePosition != null) thePosition.set((int) (myX / myCountMaxs), (int) (myY / myCountMaxs));
return myMax;
}
/**
* Returns the center of this area
*
* @return
*/
public CCVector2f center() {
CCVector2f d = new CCVector2f(0.0f, 0.0f);
int c = 0;
for (CCConnectedPixelRow myPixelRow : _myConnectedPixelRows) {
d.add(myPixelRow.center());
c++;
}
return d.scale(1f / c);
}
/**
* Draws a debugging view of this pixel area
*
* @param g
*/
public void draw(CCGraphics g) {
g.color(255, 100);
for (CCConnectedPixelRow myPixelRow : _myConnectedPixelRows) {
g.rect(myPixelRow.startX(), myPixelRow.y(), myPixelRow.length(), 1);
}
g.polygonMode(CCPolygonMode.LINE);
g.color(255, 0, 0);
CCBox2i myBBox = bbox();
g.rect(
myBBox.minX(), myBBox.minY(), myBBox.maxX() - myBBox.minX(), myBBox.maxY() - myBBox.minY());
g.polygonMode(CCPolygonMode.FILL);
// g.color(255,0,0);
// g.ellipse(center(),5);
}
CCBox2i bbox() {
if (_myBBox == null) {
int x1 = Integer.MAX_VALUE;
int y1 = Integer.MAX_VALUE;
int x2 = 0;
int y2 = 0;
for (CCConnectedPixelRow myRun : _myConnectedPixelRows) {
x1 = CCMath.min(x1, myRun.startX());
y1 = CCMath.min(y1, myRun.y());
x2 = CCMath.max(x2, myRun.endX());
y2 = CCMath.max(y2, myRun.y());
}
_myBBox = new CCBox2i(x1, y1, x2 + 1, y2 + 1);
}
return _myBBox;
}
