canvas
xod/graphics/canvas
Canvas is a rectangular piece of the screen (i.e. scene) which gets redrawn completely when at least a single graphics element on it is updated.
canvas
@/canvas
Canvas is a rectangular piece of the screen (i.e. scene) which gets redrawn completely when at least a single graphics element on it is updated.
BGxod/color/color
Background color of the scene.
FGxod/color/color
Foreground color. The default color for subsequent graphics elements.
Xnumber
X coordinate of the canvas pivot point on the screen.
Ynumber
Y coordinate of the canvas pivot point on the screen.
Wnumber
Width of the canvas.
Hnumber
Height of the canvas.
GFX@/graphics
C++ implementation
#include <Canvas.h>
node {
uint8_t mem[sizeof(Canvas)];
Canvas* canvas;
int16_t x, y, w, h;
void evaluate(Context ctx) {
auto bgColor = getValue<input_BG>(ctx);
auto fgColor = getValue<input_FG>(ctx);
int16_t x = (int16_t)getValue<input_X>(ctx);
int16_t y = (int16_t)getValue<input_Y>(ctx);
int16_t w = (int16_t)getValue<input_W>(ctx);
int16_t h = (int16_t)getValue<input_H>(ctx);
if (isSettingUp()) {
canvas = new (mem) Canvas();
}
if (isSettingUp() || x != x || y != y || w != w || h != h || isInputDirty<input_BG>(ctx) || isInputDirty<input_FG>(ctx)) {
x = x;
y = y;
w = w;
h = h;
canvas->setPosition(x, y, w, h);
canvas->setStyle(bgColor, fgColor);
emitValue<output_GFX>(ctx, canvas);
}
}
}