R6.6 is the Xorg base-lineXORG-MAINXORG-STABLE

1 files changed, 142 insertions, 0 deletions

diff --git a/transform.c b/transform.c
new file mode 100644
index 0000000..60a717a
--- /dev/null
+++ b/transform.c
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+/* $Xorg: transform.c,v 1.4 2001/02/09 02:05:33 xorgcvs Exp $ */
+/*
+
+Copyright 1993, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+
+/*
+ * transformed coordinate system objects for X
+ */
+
+# include	<X11/Xlib.h>
+# include	"transform.h"
+
+static XPoint *
+TranslatePoints (points, n_points, t, mode)
+TPoint	*points;
+int	n_points;
+Transform	*t;
+int	mode;
+{
+	XPoint	*xpoints;
+	int	i;
+	double	xoff = 0.0, yoff = 0.0;
+
+	xpoints = (XPoint *) malloc ((unsigned)n_points * sizeof (*xpoints));
+	if (!xpoints)
+		return 0;
+	for (i = 0; i < n_points; i++) {
+		xpoints[i].x = Xx(points[i].x + xoff, points[i].y + yoff, t);
+		xpoints[i].y = Xy(points[i].x + xoff, points[i].y + yoff, t);
+		if (mode == CoordModePrevious) {
+			xoff += points[i].x;
+			yoff += points[i].y;
+		}
+	}
+	return xpoints;
+}
+
+TFillPolygon (dpy, d, gc, t, points, n_points, shape, mode)
+register Display	*dpy;
+Drawable		d;
+GC			gc;
+Transform		*t;
+TPoint			*points;
+int			n_points;
+int			shape;
+int			mode;
+{
+	XPoint	*xpoints;
+
+	xpoints = TranslatePoints (points, n_points, t, mode);
+	if (xpoints) {
+		XFillPolygon (dpy, d, gc, xpoints, n_points, shape,
+				CoordModeOrigin);
+		free (xpoints);
+	}
+}
+
+TDrawArc (dpy, d, gc, t, x, y, width, height, angle1, angle2)
+	register Display	*dpy;
+	Drawable		d;
+	GC			gc;
+	Transform		*t;
+	double			x, y, width, height;
+	int			angle1, angle2;
+{
+	int	xx, xy, xw, xh;
+
+	xx = Xx(x,y,t);
+	xy = Xy(x,y,t);
+	xw = Xwidth (width, height, t);
+	xh = Xheight (width, height, t);
+	if (xw < 0) {
+		xx += xw;
+		xw = -xw;
+	}
+	if (xh < 0) {
+		xy += xh;
+		xh = -xh;
+	}
+	XDrawArc (dpy, d, gc, xx, xy, xw, xh, angle1, angle2);
+}
+
+TFillArc (dpy, d, gc, t, x, y, width, height, angle1, angle2)
+	register Display	*dpy;
+	Drawable		d;
+	GC			gc;
+	Transform		*t;
+	double			x, y, width, height;
+	int			angle1, angle2;
+{
+	int	xx, xy, xw, xh;
+
+	xx = Xx(x,y,t);
+	xy = Xy(x,y,t);
+	xw = Xwidth (width, height, t);
+	xh = Xheight (width, height, t);
+	if (xw < 0) {
+		xx += xw;
+		xw = -xw;
+	}
+	if (xh < 0) {
+		xy += xh;
+		xh = -xh;
+	}
+	XFillArc (dpy, d, gc, xx, xy, xw, xh, angle1, angle2);
+}
+
+SetTransform (t, xx1, xx2, xy1, xy2, tx1, tx2, ty1, ty2)
+Transform	*t;
+int		xx1, xx2, xy1, xy2;
+double		tx1, tx2, ty1, ty2;
+{
+	t->mx = ((double) xx2 - xx1) / (tx2 - tx1);
+	t->bx = ((double) xx1) - t->mx * tx1;
+	t->my = ((double) xy2 - xy1) / (ty2 - ty1);
+	t->by = ((double) xy1) - t->my * ty1;
+}