removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 117 deletions

diff --git a/sys/src/cmd/unix/drawterm/libmemdraw/arc.c b/sys/src/cmd/unix/drawterm/libmemdraw/arc.c
deleted file mode 100644
index a0854c0f6..000000000
--- a/sys/src/cmd/unix/drawterm/libmemdraw/arc.c
+++ /dev/null
@@ -1,117 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include <memdraw.h>
-#include <memlayer.h>
-
-/*
- * elarc(dst,c,a,b,t,src,sp,alpha,phi)
- *   draws the part of an ellipse between rays at angles alpha and alpha+phi
- *   measured counterclockwise from the positive x axis. other
- *   arguments are as for ellipse(dst,c,a,b,t,src,sp)
- */
-
-enum
-{
-	R, T, L, B	/* right, top, left, bottom */
-};
-
-static
-Point corners[] = {
-	{1,1},
-	{-1,1},
-	{-1,-1},
-	{1,-1}
-};
-
-static
-Point p00;
-
-/*
- * make a "wedge" mask covering the desired angle and contained in
- * a surrounding square; draw a full ellipse; intersect that with the
- * wedge to make a mask through which to copy src to dst.
- */
-void
-memarc(Memimage *dst, Point c, int a, int b, int t, Memimage *src, Point sp, int alpha, int phi, int op)
-{
-	int i, w, beta, tmp, c1, c2, m, m1;
-	Rectangle rect;
-	Point p,	bnd[8];
-	Memimage *wedge, *figure, *mask;
-
-	if(a < 0)
-		a = -a;
-	if(b < 0)
-		b = -b;
-	w = t;
-	if(w < 0)
-		w = 0;
-	alpha = -alpha;		/* compensate for upside-down coords */
-	phi = -phi;
-	beta = alpha + phi;
-	if(phi < 0){
-		tmp = alpha;
-		alpha = beta;
-		beta = tmp;
-		phi = -phi;
-	}
-	if(phi >= 360){
-		memellipse(dst, c, a, b, t, src, sp, op);
-		return;
-	}
-	while(alpha < 0)
-		alpha += 360;
-	while(beta < 0)
-		beta += 360;
-	c1 = alpha/90 & 3;	/* number of nearest corner */
-	c2 = beta/90 & 3;
-		/*
-		 * icossin returns point at radius ICOSSCALE.
-		 * multiplying by m1 moves it outside the ellipse
-		*/
-	rect = Rect(-a-w, -b-w, a+w+1, b+w+1);
-	m = rect.max.x;	/* inradius of bounding square */
-	if(m < rect.max.y)
-		m = rect.max.y;
-	m1 = (m+ICOSSCALE-1) >> 10;
-	m = m1 << 10;		/* assure m1*cossin is inside */
-	i = 0;
-	bnd[i++] = Pt(0,0);
-	icossin(alpha, &p.x, &p.y);
-	bnd[i++] = mulpt(p, m1);
-	for(;;) {
-		bnd[i++] = mulpt(corners[c1], m);
-		if(c1==c2 && phi<180)
-			break;
-		c1 = (c1+1) & 3;
-		phi -= 90;
-	}
-	icossin(beta, &p.x, &p.y);
-	bnd[i++] = mulpt(p, m1);
-
-	figure = nil;
-	mask = nil;
-	wedge = allocmemimage(rect, GREY1);
-	if(wedge == nil)
-		goto Return;
-	memfillcolor(wedge, DTransparent);
-	memfillpoly(wedge, bnd, i, ~0, memopaque, p00, S);
-	figure = allocmemimage(rect, GREY1);
-	if(figure == nil)
-		goto Return;
-	memfillcolor(figure, DTransparent);
-	memellipse(figure, p00, a, b, t, memopaque, p00, S);
-	mask = allocmemimage(rect, GREY1);
-	if(mask == nil)
-		goto Return;
-	memfillcolor(mask, DTransparent);
-	memimagedraw(mask, rect, figure, rect.min, wedge, rect.min, S);
-	c = subpt(c, dst->r.min);
-	memdraw(dst, dst->r, src, subpt(sp, c), mask, subpt(p00, c), op);
-
-    Return:
-	freememimage(wedge);
-	freememimage(figure);
-	freememimage(mask);
-}