From 76193d7cb0457807b2f0b95f909ab5de19480cd7 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Tue, 30 Sep 2003 17:47:42 +0000
Subject: Initial revision

---
 src/libdraw/ellipse.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/libdraw/ellipse.c

(limited to 'src/libdraw/ellipse.c')

diff --git a/src/libdraw/ellipse.c b/src/libdraw/ellipse.c
new file mode 100644
index 00000000..7a063f11
--- /dev/null
+++ b/src/libdraw/ellipse.c
@@ -0,0 +1,82 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+static
+void
+doellipse(int cmd, Image *dst, Point *c, int xr, int yr, int thick, Image *src, Point *sp, int alpha, int phi, Drawop op)
+{
+	uchar *a;
+
+	_setdrawop(dst->display, op);
+
+	a = bufimage(dst->display, 1+4+4+2*4+4+4+4+2*4+2*4);
+	if(a == 0){
+		fprint(2, "image ellipse: %r\n");
+		return;
+	}
+	a[0] = cmd;
+	BPLONG(a+1, dst->id);
+	BPLONG(a+5, src->id);
+	BPLONG(a+9, c->x);
+	BPLONG(a+13, c->y);
+	BPLONG(a+17, xr);
+	BPLONG(a+21, yr);
+	BPLONG(a+25, thick);
+	BPLONG(a+29, sp->x);
+	BPLONG(a+33, sp->y);
+	BPLONG(a+37, alpha);
+	BPLONG(a+41, phi);
+}
+
+void
+ellipse(Image *dst, Point c, int a, int b, int thick, Image *src, Point sp)
+{
+	doellipse('e', dst, &c, a, b, thick, src, &sp, 0, 0, SoverD);
+}
+
+void
+ellipseop(Image *dst, Point c, int a, int b, int thick, Image *src, Point sp, Drawop op)
+{
+	doellipse('e', dst, &c, a, b, thick, src, &sp, 0, 0, op);
+}
+
+void
+fillellipse(Image *dst, Point c, int a, int b, Image *src, Point sp)
+{
+	doellipse('E', dst, &c, a, b, 0, src, &sp, 0, 0, SoverD);
+}
+
+void
+fillellipseop(Image *dst, Point c, int a, int b, Image *src, Point sp, Drawop op)
+{
+	doellipse('E', dst, &c, a, b, 0, src, &sp, 0, 0, op);
+}
+
+void
+arc(Image *dst, Point c, int a, int b, int thick, Image *src, Point sp, int alpha, int phi)
+{
+	alpha |= 1<<31;
+	doellipse('e', dst, &c, a, b, thick, src, &sp, alpha, phi, SoverD);
+}
+
+void
+arcop(Image *dst, Point c, int a, int b, int thick, Image *src, Point sp, int alpha, int phi, Drawop op)
+{
+	alpha |= 1<<31;
+	doellipse('e', dst, &c, a, b, thick, src, &sp, alpha, phi, op);
+}
+
+void
+fillarc(Image *dst, Point c, int a, int b, Image *src, Point sp, int alpha, int phi)
+{
+	alpha |= 1<<31;
+	doellipse('E', dst, &c, a, b, 0, src, &sp, alpha, phi, SoverD);
+}
+
+void
+fillarcop(Image *dst, Point c, int a, int b, Image *src, Point sp, int alpha, int phi, Drawop op)
+{
+	alpha |= 1<<31;
+	doellipse('E', dst, &c, a, b, 0, src, &sp, alpha, phi, op);
+}
-- 
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