Cannot increase Sprite image Window in Loop()

Using Arduino Programming Questions
1

I am using a Bluepill (STM32F103C8) with 128k memory.

When I increase the Sprite image window there is nothing on the display.
So I start with a image of 64x64 and the increment the image window by 1 after every complete cycle, but the window stays the same size.

Why does the image size not get bigger when incremented in the Loop()?

#include <TFT_eSPI.h>
TFT_eSPI tft = TFT_eSPI();
TFT_eSprite img = TFT_eSprite(&tft);
int ver = 64;
int hor = 64;
int x = 0;


void setup()
{
  tft.init();
  tft.setRotation(3);
  //img.createSprite(ver, hor);
}

void loop()
{
  img.createSprite(ver, hor);

  for (x = 0; x < 160; x++)
  {
    //tft.fillCircle(x, 36, 30, TFT_BLACK);
    img.fillCircle(x - 1, 36, 30, TFT_BLACK);

    //tft.fillCircle(x, 36, 30, TFT_RED);
    img.fillCircle(x, 36, 30, TFT_RED);
    img.pushSprite(0, 0);

  }

  tft.drawNumber(ver, 10, 80, 4);
  tft.drawNumber(hor, 80, 80, 4);
  ver ++;
  hor ++;
}

image

There is no lines or flickering on the red ball the lines in the photo is due to the ball moving while the photo was taken.

2

You forgot to delete the sprite

3

Thanks.
Huh? .. How?

Is there a "img.DeleteSprite(x,y,) function?

4

Yes, img.deleteSprite();

Make sure to restrict ver and hor to safe values

Maybe you want to play with setWindow or other sprite functions

1 Like
5

Yes thanks, I tried it before your reply and it works.

 tft.drawNumber(ver, 10, 80, 4);
  tft.drawNumber(hor, 80, 80, 4);
  ver ++;
  hor ++;
  img.deleteSprite();

Thanks.

6

Yes I can now see at what values the image stops to work, I will play around.