b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncCopyright 1988, 1998 The Open Group
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncPermission to use, copy, modify, distribute, and sell this software and its
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncdocumentation for any purpose is hereby granted without fee, provided that
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncthe above copyright notice appear in all copies and that both that
b9a21c3c91c47e090316e28d759194e46628ed49vboxsynccopyright notice and this permission notice appear in supporting
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncdocumentation.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncThe above copyright notice and this permission notice shall be included
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncin all copies or substantial portions of the Software.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncOR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncMERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncIN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncOTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncOTHER DEALINGS IN THE SOFTWARE.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncExcept as contained in this notice, the name of The Open Group shall
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncnot be used in advertising or otherwise to promote the sale, use or
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncother dealings in this Software without prior written authorization
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncfrom The Open Group.
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync/* Author: Keith Packard, MIT X Consortium */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * interface data to span-merging polygon filler
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define AppendSpanGroup(pGC, pixel, spanPtr, spanData) { \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Polygon edge description for integer wide-line routines
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int x; /* starting x coordinate */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int e; /* initial error term */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - miter limit constant */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * types for general polygon routines
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync double x, y;
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync double k; /* x0 * dy - y0 * dx */
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * Line face description for caps/joins
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync * macros for polygon fillers
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define MIPOLYRELOADLEFT if (!left_height && left_count) { \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define MIPOLYRELOADRIGHT if (!right_height && right_count) { \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define MILINESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync DoChangeGC (pGC, GCForeground, (XID *) &pixel, FALSE); \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync#define MILINERESETPIXEL(pDrawable, pGC, pixel, oldPixel) { \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync DoChangeGC (pGC, GCForeground, (XID *) &oldPixel, FALSE); \
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int * /*y1*/,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsync int * /*y2*/,
b9a21c3c91c47e090316e28d759194e46628ed49vboxsyncextern _X_EXPORT int miPolyBuildEdge(double x0, double y0, double k, int dx, int dy,