private void drawBoundTexture(BasicTexture texture, int x, int y, int width, int height) {
// Test whether it has been rotated or flipped, if so, glDrawTexiOES
// won't work
if (isMatrixRotatedOrFlipped(mMatrixValues)) {
if (texture.hasBorder()) {
setTextureCoords(
1.0f / texture.getTextureWidth(),
1.0f / texture.getTextureHeight(),
(texture.getWidth() - 1.0f) / texture.getTextureWidth(),
(texture.getHeight() - 1.0f) / texture.getTextureHeight());
} else {
setTextureCoords(
0,
0,
(float) texture.getWidth() / texture.getTextureWidth(),
(float) texture.getHeight() / texture.getTextureHeight());
}
textureRect(x, y, width, height);
} else {
// draw the rect from bottom-left to top-right
float points[] = mapPoints(mMatrixValues, x, y + height, x + width, y);
x = (int) (points[0] + 0.5f);
y = (int) (points[1] + 0.5f);
width = (int) (points[2] + 0.5f) - x;
height = (int) (points[3] + 0.5f) - y;
if (width > 0 && height > 0) {
((GL11Ext) mGL).glDrawTexiOES(x, y, 0, width, height);
mCountTextureOES++;
}
}
}
// This function changes the source coordinate to the texture coordinates.
// It also clips the source and target coordinates if it is beyond the
// bound of the texture.
private void convertCoordinate(RectF source, RectF target, BasicTexture texture) {
int width = texture.getWidth();
int height = texture.getHeight();
int texWidth = texture.getTextureWidth();
int texHeight = texture.getTextureHeight();
// Convert to texture coordinates
source.left /= texWidth;
source.right /= texWidth;
source.top /= texHeight;
source.bottom /= texHeight;
// Clip if the rendering range is beyond the bound of the texture.
float xBound = (float) width / texWidth;
if (source.right > xBound) {
target.right = target.left + target.width() * (xBound - source.left) / source.width();
source.right = xBound;
}
float yBound = (float) height / texHeight;
if (source.bottom > yBound) {
target.bottom = target.top + target.height() * (yBound - source.top) / source.height();
source.bottom = yBound;
}
}
