wt-sprite
wayland/wio-terminal-lcd/wt-sprite
Create a sprite. A sprite is stored in RAM and can be rendered to the LCD using either push-sprite or push-rotated-sprite.
wt-sprite
@/wt-sprite
Create a sprite. A sprite is stored in RAM and can be rendered to the LCD using either push-sprite or push-rotated-sprite.
DEV@/wt-lcd-device
A wt-lcd-device.
Widthnumber
Width of sprite in pixels.
Heightnumber
Height of sprite in pixels.
Sprite@/wt-sprite
A wt-sprite object.
C++ implementation
node {
meta {
// Define our custom type as a pointer on the class instance.
using Type = TFT_eSprite*;
}
uint8_t mem[sizeof(TFT_eSprite)];
void evaluate(Context ctx) {
// It should be evaluated only once on the first (setup) transaction
if (!isSettingUp())
return;
auto tft = getValue<input_DEV>(ctx);
Type spr = new (mem) TFT_eSprite(tft);
// initialize sprite
spr -> setColorDepth(16);
spr -> createSprite(getValue<input_Width>(ctx), getValue<input_Height>(ctx));
emitValue<output_Sprite>(ctx, spr);
}
}