GLSL function to check if a point/mouse is inside a box

in-bounds.glsl

bool inBounds(vec2 mouse, vec2 uv, float width, float height) {
  float mx = mouse.x;
  float my = 1.0 - mouse.y;
  bool inX = mx >= uv.x - width && mx <= uv.x + width;
  bool inY = my >= uv.y - height && my <= uv.y + height;
  return inX && inY;
}

Example usage: https://codesandbox.io/s/glsl-shader-playground-cbtvy?file=/src/components/plane/fragment.glsl