Added a tgi_arc function. Removed the old ellipse code and create a new

ellipse module that calls tgi_arc.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4446 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/tgi/tgi_ellipse.s

@@ -0,0 +1,28 @@
+;
+; Ullrich von Bassewitz, 2009-11-05
+;
+; void __fastcall__ tgi_ellipse (int x, int y, unsigned char rx, unsigned char ry);
+; /* Draw a full ellipse with center at x/y and radii rx/ry using the current
+;  * drawing color.
+;  */
+;
+
+
+        .include        "tgi-kernel.inc"
+
+        .import         pusha, push0
+
+
+;----------------------------------------------------------------------------
+;
+
+.code
+.proc   _tgi_ellipse
+
+        jsr     pusha                   ; Push ry
+        jsr     push0                   ; Start angle is 0
+        lda     #<360
+        ldx     #>360                   ; End angle is 360
+        jmp     _tgi_arc
+
+.endproc