/// @param x
/// @param y
/// @param rad
/// @param thick
/// @param angle1
/// @param angle2
function draw_arc(argument0, argument1, argument2, argument3, argument4, argument5) {

	var xx = argument0,
		yy=argument1,
		rad=argument2,
		th=argument3,
		a1=argument4*pi/180,
		a2=argument5*pi/180,
		qual = ceil(abs(a2-a1)*global.arc_quality/(2*pi));

	draw_primitive_begin(pr_trianglestrip);
		for(var i=0;i<=qual;i+=1){
			var a = lerp(a1,a2,i/qual),
				lx = cos(a),//lengthdir_x(1,a),
				ly = -sin(a);//lengthdir_y(1,a);
			draw_vertex(xx+lx*rad,yy+ly*rad);
			draw_vertex(xx+lx*(rad-th),yy+ly*(rad-th));
		}
	draw_primitive_end();


}

/// @param x
/// @param y
/// @param rad
/// @param thick
/// @param a1
/// @param a2
/// @param alpha_out
/// @param alpha_in
function draw_arc_alpha(argument0, argument1, argument2, argument3, argument4, argument5, argument6, argument7) {

	var xx = argument0,
		yy=argument1,
		rad=argument2,
		th=argument3,
		a1=argument4,
		a2=argument5,
		alpha_out = argument6,
		alpha_in = argument7,
		qual = ceil(abs(a2-a1)*global.arc_quality/360);

	draw_primitive_begin(pr_trianglestrip);
		for(var i=0;i<=qual;i+=1){
			var a = lerp(a1,a2,i/qual),
				lx = lengthdir_x(1,a),
				ly = lengthdir_y(1,a);
			draw_vertex_colour(xx+lx*rad,yy+ly*rad,draw_get_colour(),alpha_out);
			draw_vertex_colour(xx+lx*(rad-th),yy+ly*(rad-th),draw_get_colour(),alpha_in);
		}
	draw_primitive_end();


}

/// @param x
/// @param y
/// @param xrad
/// @param yrad
/// @param a1
/// @param a2
function draw_arc_ellipse(argument0, argument1, argument2, argument3, argument4, argument5) {

	var xx = argument0,
		yy=argument1,
		xrad=argument2,
		yrad=argument3,
		a1=argument4*pi/180,
		a2=argument5*pi/180,
		qual = ceil(abs(a2-a1)*global.arc_quality/(2*pi));

	draw_primitive_begin(pr_trianglestrip);
		for(var i=0;i<=qual;i+=1){
			var a = lerp(a1,a2,i/qual),
				lx = cos(a),//lengthdir_x(1,a),
				ly = -sin(a);//lengthdir_y(1,a);
			draw_vertex(xx+lx*xrad,yy+ly*yrad);
			draw_vertex(xx,yy);
		}
	draw_primitive_end();


}


/// @param x
/// @param y
/// @param xrad
/// @param yrad
/// @param ang1
/// @param ang2
/// @param thick
/// @param alphaIN
/// @param alphaOUT
function draw_arc_ellipse_alpha(argument0, argument1, argument2, argument3, argument4, argument5, argument6, argument7, argument8) {

	var xx = argument0,
		yy=argument1,
		xrad=argument2,
		yrad=argument3,
		a1=argument4*pi/180,
		a2=argument5*pi/180,
		thick = argument6,
		alphai=argument7,
		alphao=argument8,
		xrad2 = xrad-thick,
		yrad2 = yrad-thick,
		qual = ceil(abs(a2-a1)*global.arc_quality/(2*pi)),
		col = draw_get_color();

	draw_primitive_begin(pr_trianglestrip);
		for(var i=0;i<=qual;i+=1){
			var a = lerp(a1,a2,i/qual),
				lx = cos(a),//lengthdir_x(1,a),
				ly = -sin(a);//lengthdir_y(1,a);
			draw_vertex_color(xx+lx*xrad,yy+ly*yrad,col,alphao);
			draw_vertex_color(xx+lx*xrad2,yy+ly*yrad2,col,alphai);
		}
	draw_primitive_end();


}