// reads pixel from drawing buffer, not refresh buffer
const rgb24 SmartMatrix::readPixel(int16_t x, int16_t y) const {
int hwx, hwy;
// check for out of bounds coordinates
if (x < 0 || y < 0 || x >= screenConfig.localWidth || y >= screenConfig.localHeight)
return (rgb24)rgb24(0, 0, 0);
// map pixel into hardware buffer before writing
if (screenConfig.rotation == rotation0) {
hwx = x;
hwy = y;
} else if (screenConfig.rotation == rotation180) {
hwx = (MATRIX_WIDTH - 1) - x;
hwy = (MATRIX_HEIGHT - 1) - y;
} else if (screenConfig.rotation == rotation90) {
hwx = (MATRIX_WIDTH - 1) - y;
hwy = x;
} else { /* if (screenConfig.rotation == rotation270)*/
hwx = y;
hwy = (MATRIX_HEIGHT - 1) - x;
}
return currentDrawBufferPtr[hwy][hwx];
}
void RGB(void) {
rgb24(cntx, c_cntx);
}
