rendering_code.ino

//THE BITMAP **7 wide and 6 high** (hint: It's a pixel heart, hand-written by me :D)
bool bmap[] = {false, true, true,false, true, true,false,
                true, true, true, true, true, true, true,
                true, true, true, true, true, true, true,
               false, true, true, true, true, true,false,
               false,false, true, true, true,false,false,
               false,false,false, true,false,false,false};
               
//DRAW A HALF OF A HEART
drawBitmap(i,j,7,6,4,6,bmap);

//RENDERING CODE
void drawBitmap(int startx, int starty,int width, int height, bool bm[]) {
  for(int i = 0; i < height; i++) {
    for(int j = 0; j < width; j++) {
      lcd.setPixel(startx+j, starty+i, (int)bm[j + width * i]);
    }
  }
}

void drawBitmap(int startx, int starty, int width, int height, int cutoffw, int cutoffh, bool bm[]) {
  for(int i = 0; i < cutoffh; i++) {
    for(int j = 0; j < cutoffw; j++) {
      lcd.setPixel(startx+j, starty+i, (int)bm[j + width * i]);
    }
  }
}

void drawBitmap(int startx, int starty, int width, int height,int cutonw, int cutonh, int cutoffw, int cutoffh, bool bm[]) {
  for(int i = cutonh; i < cutoffh; i++) {
    for(int j = cutonw; j < cutoffw; j++) {
      lcd.setPixel(startx+j, starty+i, (int)bm[j + width * i]);
    }
  }
}