Method IsMouseOver

src/visual_feature.cpp:38–65

#include "visual_feature.h"

bool VisualDraggableFeature::IsMouseOver(Vector2D mouse_pos) const {
	if (!pos) return false;

	Vector2D delta = mouse_pos - pos;

	switch (type) {
		case DRAG_BIG_SQUARE:
			return fabs(delta.X()) < 6 && fabs(delta.Y()) < 6;

		case DRAG_BIG_CIRCLE:
			return delta.SquareLen() < 36;

		case DRAG_BIG_TRIANGLE: {
			if (delta.Y() < -10 || delta.Y() > 6) return false;
			float dy = delta.Y() - 6;
			return 16 * delta.X() + 9 * dy < 0 && 16 * delta.X() - 9 * dy > 0;
		}

		case DRAG_SMALL_SQUARE:
			return fabs(delta.X()) < 3 && fabs(delta.Y()) < 3;

		case DRAG_SMALL_CIRCLE:
			return delta.SquareLen() < 9;

		default:
			return false;
	}
}

void VisualDraggableFeature::Draw(OpenGLWrapper const& gl) const {
	if (!pos) return;