isInTriangle()

bool grapic::isInTriangle	(	float	px,
		float	py,
		float	ax,
		float	ay,
		float	bx,
		float	by,
		float	cx,
		float	cy
	)

Decide if a point (px, py) is inside the triangle (ax, ay), (bx, by), (cx, xy). (Code provided by Bastien DOIGNIES, many thanks)

Returns

true if inside, false otherwise