69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
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/* $Xorg: transform.h,v 1.4 2001/02/09 02:05:33 xorgcvs Exp $ */
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/*
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Copyright 1993, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/* $XFree86: xc/programs/oclock/transform.h,v 1.4 2001/01/17 23:45:01 dawes Exp $ */
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/*
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* header file for transformed coordinate system. No rotations
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* supported, as elipses cannot be rotated in X.
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*/
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typedef struct _transform {
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double mx, bx;
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double my, by;
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} Transform;
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typedef struct _TPoint {
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double x, y;
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} TPoint;
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typedef struct _TRectangle {
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double x, y, width, height;
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} TRectangle;
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# define Xx(x,y,t) ((int)((t)->mx * (x) + (t)->bx + 0.5))
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# define Xy(x,y,t) ((int)((t)->my * (y) + (t)->by + 0.5))
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# define Xwidth(w,h,t) ((int)((t)->mx * (w) + 0.5))
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# define Xheight(w,h,t) ((int)((t)->my * (h) + 0.5))
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# define Tx(x,y,t) ((((double) (x)) - (t)->bx) / (t)->mx)
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# define Ty(x,y,t) ((((double) (y)) - (t)->by) / (t)->my)
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# define Twidth(w,h,t) (((double) (w)) / (t)->mx)
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# define Theight(w,h,t) (((double) (h)) / (t)->my)
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extern void TFillPolygon ( Display *dpy, Drawable d, GC gc, Transform *t,
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TPoint *points, int n_points, int shape, int mode );
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extern void TDrawArc ( Display *dpy, Drawable d, GC gc, Transform *t,
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double x, double y, double width, double height,
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int angle1, int angle2 );
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extern void TFillArc ( Display *dpy, Drawable d, GC gc, Transform *t,
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double x, double y, double width, double height,
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int angle1, int angle2 );
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extern void SetTransform ( Transform *t, int xx1, int xx2, int xy1, int xy2,
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double tx1, double tx2, double ty1, double ty2 );
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