Method DrawMapArrow

roomedit/source/mapdc.cpp:709–716

///////////////////////////////////////////////////// TMapDC ------ draw an arrow on the screen from map coords and angle (0 - 65535) TODO: Need to add clipping and scaling

//  draw an arrow on the screen from map coords and angle (0 - 65535)
//  TODO: Need to add clipping and scaling
void
TMapDC::DrawMapArrow(SHORT mapXstart, SHORT mapYstart, USHORT angle, USHORT len)
{
	// NOTE: 10430,...  = 65535 / (2 * PI)
	SHORT    mapXend   = mapXstart + (SHORT) (len * cos(angle / 10430.37835));
	SHORT    mapYend   = mapYstart + (SHORT) (len * sin(angle / 10430.37835));
	DrawMapVector (mapXstart, mapYstart, mapXend, mapYend);
}