C++ (Cpp) LineToLine Examples

Example #1

File: Base.cpp Project: edeksumo/carpg

bool LineToRectangle(const VEC2& start, const VEC2& end, const VEC2& rect_pos, const VEC2& rect_pos2, float* _t)
{
	assert(rect_pos.x<=rect_pos2.x && rect_pos.y<=rect_pos2.y);

	const VEC2 topRight(rect_pos2.x, rect_pos.y),
		bottomLeft(rect_pos.x, rect_pos2.y);

	if(_t)
	{
		float tt, t = 1.001f;

		if(LineToLine(start, end, rect_pos, topRight, &tt) && tt < t) t = tt;
		if(LineToLine(start, end, topRight, rect_pos2, &tt) && tt < t) t = tt;
		if(LineToLine(start, end, rect_pos2, bottomLeft, &tt) && tt < t) t = tt;
		if(LineToLine(start, end, bottomLeft, rect_pos, &tt) && tt < t) t = tt;

		*_t = t;

		return (t <= 1.f);
	}
	else
	{
		if(LineToLine(rect_pos, topRight, start, end))    return true;
		if(LineToLine(topRight, rect_pos2, start, end))   return true;
		if(LineToLine(rect_pos2, bottomLeft, start, end)) return true;
		if(LineToLine(bottomLeft, rect_pos, start, end))  return true;

		return false;
	}
}

Example #2

File: Physics.cpp Project: chrisx2000/Revival-Project

bool Physics::BoxToBox(Box& A, Box& B)
{
	int A_count = A.count;
	int B_count = B.count;
	Line* A_S = A.S;
	Line* B_S = B.S;
	for (int i = 0; i < A_count; i++)
		for (int n = 0; n < B_count; n++)
			if (LineToLine(A_S[i], B_S[n]))
				return true;
	return false;
}