summaryrefslogtreecommitdiffstats
path: root/krfb/libvncserver/sraRegion.c
diff options
context:
space:
mode:
Diffstat (limited to 'krfb/libvncserver/sraRegion.c')
-rw-r--r--krfb/libvncserver/sraRegion.c889
1 files changed, 0 insertions, 889 deletions
diff --git a/krfb/libvncserver/sraRegion.c b/krfb/libvncserver/sraRegion.c
deleted file mode 100644
index 315ce5b1..00000000
--- a/krfb/libvncserver/sraRegion.c
+++ /dev/null
@@ -1,889 +0,0 @@
-/* -=- sraRegion.c
- * Copyright (c) 2001 James "Wez" Weatherall, Johannes E. Schindelin
- *
- * A general purpose region clipping library
- * Only deals with rectangular regions, though.
- */
-
-#include "rfb.h"
-#include "sraRegion.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-
-/* -=- Internal Span structure */
-
-struct sraRegion;
-
-typedef struct sraSpan {
- struct sraSpan *_next;
- struct sraSpan *_prev;
- int start;
- int end;
- struct sraRegion *subspan;
-} sraSpan;
-
-typedef struct sraRegion {
- sraSpan front;
- sraSpan back;
-} sraSpanList;
-
-/* -=- Span routines */
-
-sraSpanList *sraSpanListDup(const sraSpanList *src);
-void sraSpanListDestroy(sraSpanList *list);
-
-static sraSpan *
-sraSpanCreate(int start, int end, const sraSpanList *subspan) {
- sraSpan *item = (sraSpan*)malloc(sizeof(sraSpan));
- item->_next = item->_prev = NULL;
- item->start = start;
- item->end = end;
- item->subspan = sraSpanListDup(subspan);
- return item;
-}
-
-static sraSpan *
-sraSpanDup(const sraSpan *src) {
- sraSpan *span;
- if (!src) return NULL;
- span = sraSpanCreate(src->start, src->end, src->subspan);
- return span;
-}
-
-static void
-sraSpanInsertAfter(sraSpan *newspan, sraSpan *after) {
- newspan->_next = after->_next;
- newspan->_prev = after;
- after->_next->_prev = newspan;
- after->_next = newspan;
-}
-
-static void
-sraSpanInsertBefore(sraSpan *newspan, sraSpan *before) {
- newspan->_next = before;
- newspan->_prev = before->_prev;
- before->_prev->_next = newspan;
- before->_prev = newspan;
-}
-
-static void
-sraSpanRemove(sraSpan *span) {
- span->_prev->_next = span->_next;
- span->_next->_prev = span->_prev;
-}
-
-static void
-sraSpanDestroy(sraSpan *span) {
- if (span->subspan) sraSpanListDestroy(span->subspan);
- free(span);
-}
-
-#ifdef DEBUG
-static void
-sraSpanCheck(const sraSpan *span, const char *text) {
- /* Check the span is valid! */
- if (span->start == span->end) {
- printf(text);
- printf(":%d-%d\n", span->start, span->end);
- }
-}
-#endif
-
-/* -=- SpanList routines */
-
-static void sraSpanPrint(const sraSpan *s);
-
-static void
-sraSpanListPrint(const sraSpanList *l) {
- sraSpan *curr;
- if (!l) {
- printf("NULL");
- return;
- }
- curr = l->front._next;
- printf("[");
- while (curr != &(l->back)) {
- sraSpanPrint(curr);
- curr = curr->_next;
- }
- printf("]");
-}
-
-void
-sraSpanPrint(const sraSpan *s) {
- printf("(%d-%d)", (s->start), (s->end));
- if (s->subspan)
- sraSpanListPrint(s->subspan);
-}
-
-static sraSpanList *
-sraSpanListCreate(void) {
- sraSpanList *item = (sraSpanList*)malloc(sizeof(sraSpanList));
- item->front._next = &(item->back);
- item->front._prev = NULL;
- item->back._prev = &(item->front);
- item->back._next = NULL;
- return item;
-}
-
-sraSpanList *
-sraSpanListDup(const sraSpanList *src) {
- sraSpanList *newlist;
- sraSpan *newspan, *curr;
-
- if (!src) return NULL;
- newlist = sraSpanListCreate();
- curr = src->front._next;
- while (curr != &(src->back)) {
- newspan = sraSpanDup(curr);
- sraSpanInsertBefore(newspan, &(newlist->back));
- curr = curr->_next;
- }
-
- return newlist;
-}
-
-void
-sraSpanListDestroy(sraSpanList *list) {
- sraSpan *curr, *next;
- while (list->front._next != &(list->back)) {
- curr = list->front._next;
- next = curr->_next;
- sraSpanRemove(curr);
- sraSpanDestroy(curr);
- curr = next;
- }
- free(list);
-}
-
-static void
-sraSpanListMakeEmpty(sraSpanList *list) {
- sraSpan *curr, *next;
- while (list->front._next != &(list->back)) {
- curr = list->front._next;
- next = curr->_next;
- sraSpanRemove(curr);
- sraSpanDestroy(curr);
- curr = next;
- }
- list->front._next = &(list->back);
- list->front._prev = NULL;
- list->back._prev = &(list->front);
- list->back._next = NULL;
-}
-
-static Bool
-sraSpanListEqual(const sraSpanList *s1, const sraSpanList *s2) {
- sraSpan *sp1, *sp2;
-
- if (!s1) {
- if (!s2) {
- return 1;
- } else {
- printf("sraSpanListEqual:incompatible spans (only one NULL!)\n");
- return FALSE;
- }
- }
-
- sp1 = s1->front._next;
- sp2 = s2->front._next;
- while ((sp1 != &(s1->back)) &&
- (sp2 != &(s2->back))) {
- if ((sp1->start != sp2->start) ||
- (sp1->end != sp2->end) ||
- (!sraSpanListEqual(sp1->subspan, sp2->subspan))) {
- return 0;
- }
- sp1 = sp1->_next;
- sp2 = sp2->_next;
- }
-
- if ((sp1 == &(s1->back)) && (sp2 == &(s2->back))) {
- return 1;
- } else {
- return 0;
- }
-}
-
-static Bool
-sraSpanListEmpty(const sraSpanList *list) {
- return (list->front._next == &(list->back));
-}
-
-static unsigned long
-sraSpanListCount(const sraSpanList *list) {
- sraSpan *curr = list->front._next;
- unsigned long count = 0;
- while (curr != &(list->back)) {
- if (curr->subspan) {
- count += sraSpanListCount(curr->subspan);
- } else {
- count += 1;
- }
- curr = curr->_next;
- }
- return count;
-}
-
-static void
-sraSpanMergePrevious(sraSpan *dest) {
- sraSpan *prev = dest->_prev;
-
- while ((prev->_prev) &&
- (prev->end == dest->start) &&
- (sraSpanListEqual(prev->subspan, dest->subspan))) {
- /*
- printf("merge_prev:");
- sraSpanPrint(prev);
- printf(" & ");
- sraSpanPrint(dest);
- printf("\n");
- */
- dest->start = prev->start;
- sraSpanRemove(prev);
- sraSpanDestroy(prev);
- prev = dest->_prev;
- }
-}
-
-static void
-sraSpanMergeNext(sraSpan *dest) {
- sraSpan *next = dest->_next;
- while ((next->_next) &&
- (next->start == dest->end) &&
- (sraSpanListEqual(next->subspan, dest->subspan))) {
-/*
- printf("merge_next:");
- sraSpanPrint(dest);
- printf(" & ");
- sraSpanPrint(next);
- printf("\n");
- */
- dest->end = next->end;
- sraSpanRemove(next);
- sraSpanDestroy(next);
- next = dest->_next;
- }
-}
-
-static void
-sraSpanListOr(sraSpanList *dest, const sraSpanList *src) {
- sraSpan *d_curr, *s_curr;
- int s_start, s_end;
-
- if (!dest) {
- if (!src) {
- return;
- } else {
- printf("sraSpanListOr:incompatible spans (only one NULL!)\n");
- return;
- }
- }
-
- d_curr = dest->front._next;
- s_curr = src->front._next;
- s_start = s_curr->start;
- s_end = s_curr->end;
- while (s_curr != &(src->back)) {
-
- /* - If we are at end of destination list OR
- If the new span comes before the next destination one */
- if ((d_curr == &(dest->back)) ||
- (d_curr->start >= s_end)) {
- /* - Add the span */
- sraSpanInsertBefore(sraSpanCreate(s_start, s_end,
- s_curr->subspan),
- d_curr);
- if (d_curr != &(dest->back))
- sraSpanMergePrevious(d_curr);
- s_curr = s_curr->_next;
- s_start = s_curr->start;
- s_end = s_curr->end;
- } else {
-
- /* - If the new span overlaps the existing one */
- if ((s_start < d_curr->end) &&
- (s_end > d_curr->start)) {
-
- /* - Insert new span before the existing destination one? */
- if (s_start < d_curr->start) {
- sraSpanInsertBefore(sraSpanCreate(s_start,
- d_curr->start,
- s_curr->subspan),
- d_curr);
- sraSpanMergePrevious(d_curr);
- }
-
- /* Split the existing span if necessary */
- if (s_end < d_curr->end) {
- sraSpanInsertAfter(sraSpanCreate(s_end,
- d_curr->end,
- d_curr->subspan),
- d_curr);
- d_curr->end = s_end;
- }
- if (s_start > d_curr->start) {
- sraSpanInsertBefore(sraSpanCreate(d_curr->start,
- s_start,
- d_curr->subspan),
- d_curr);
- d_curr->start = s_start;
- }
-
- /* Recursively OR subspans */
- sraSpanListOr(d_curr->subspan, s_curr->subspan);
-
- /* Merge this span with previous or next? */
- if (d_curr->_prev != &(dest->front))
- sraSpanMergePrevious(d_curr);
- if (d_curr->_next != &(dest->back))
- sraSpanMergeNext(d_curr);
-
- /* Move onto the next pair to compare */
- if (s_end > d_curr->end) {
- s_start = d_curr->end;
- d_curr = d_curr->_next;
- } else {
- s_curr = s_curr->_next;
- s_start = s_curr->start;
- s_end = s_curr->end;
- }
- } else {
- /* - No overlap. Move to the next destination span */
- d_curr = d_curr->_next;
- }
- }
- }
-}
-
-static Bool
-sraSpanListAnd(sraSpanList *dest, const sraSpanList *src) {
- sraSpan *d_curr, *s_curr, *d_next;
-
- if (!dest) {
- if (!src) {
- return 1;
- } else {
- printf("sraSpanListAnd:incompatible spans (only one NULL!)\n");
- return FALSE;
- }
- }
-
- d_curr = dest->front._next;
- s_curr = src->front._next;
- while ((s_curr != &(src->back)) && (d_curr != &(dest->back))) {
-
- /* - If we haven't reached a destination span yet then move on */
- if (d_curr->start >= s_curr->end) {
- s_curr = s_curr->_next;
- continue;
- }
-
- /* - If we are beyond the current destination span then remove it */
- if (d_curr->end <= s_curr->start) {
- sraSpan *next = d_curr->_next;
- sraSpanRemove(d_curr);
- sraSpanDestroy(d_curr);
- d_curr = next;
- continue;
- }
-
- /* - If we partially overlap a span then split it up or remove bits */
- if (s_curr->start > d_curr->start) {
- /* - The top bit of the span does not match */
- d_curr->start = s_curr->start;
- }
- if (s_curr->end < d_curr->end) {
- /* - The end of the span does not match */
- sraSpanInsertAfter(sraSpanCreate(s_curr->end,
- d_curr->end,
- d_curr->subspan),
- d_curr);
- d_curr->end = s_curr->end;
- }
-
- /* - Now recursively process the affected span */
- if (!sraSpanListAnd(d_curr->subspan, s_curr->subspan)) {
- /* - The destination subspan is now empty, so we should remove it */
- sraSpan *next = d_curr->_next;
- sraSpanRemove(d_curr);
- sraSpanDestroy(d_curr);
- d_curr = next;
- } else {
- /* Merge this span with previous or next? */
- if (d_curr->_prev != &(dest->front))
- sraSpanMergePrevious(d_curr);
-
- /* - Move on to the next span */
- d_next = d_curr;
- if (s_curr->end >= d_curr->end) {
- d_next = d_curr->_next;
- }
- if (s_curr->end <= d_curr->end) {
- s_curr = s_curr->_next;
- }
- d_curr = d_next;
- }
- }
-
- while (d_curr != &(dest->back)) {
- sraSpan *next = d_curr->_next;
- sraSpanRemove(d_curr);
- sraSpanDestroy(d_curr);
- d_curr=next;
- }
-
- return !sraSpanListEmpty(dest);
-}
-
-static Bool
-sraSpanListSubtract(sraSpanList *dest, const sraSpanList *src) {
- sraSpan *d_curr, *s_curr;
-
- if (!dest) {
- if (!src) {
- return 1;
- } else {
- printf("sraSpanListSubtract:incompatible spans (only one NULL!)\n");
- return FALSE;
- }
- }
-
- d_curr = dest->front._next;
- s_curr = src->front._next;
- while ((s_curr != &(src->back)) && (d_curr != &(dest->back))) {
-
- /* - If we haven't reached a destination span yet then move on */
- if (d_curr->start >= s_curr->end) {
- s_curr = s_curr->_next;
- continue;
- }
-
- /* - If we are beyond the current destination span then skip it */
- if (d_curr->end <= s_curr->start) {
- d_curr = d_curr->_next;
- continue;
- }
-
- /* - If we partially overlap the current span then split it up */
- if (s_curr->start > d_curr->start) {
- sraSpanInsertBefore(sraSpanCreate(d_curr->start,
- s_curr->start,
- d_curr->subspan),
- d_curr);
- d_curr->start = s_curr->start;
- }
- if (s_curr->end < d_curr->end) {
- sraSpanInsertAfter(sraSpanCreate(s_curr->end,
- d_curr->end,
- d_curr->subspan),
- d_curr);
- d_curr->end = s_curr->end;
- }
-
- /* - Now recursively process the affected span */
- if ((!d_curr->subspan) || !sraSpanListSubtract(d_curr->subspan, s_curr->subspan)) {
- /* - The destination subspan is now empty, so we should remove it */
- sraSpan *next = d_curr->_next;
- sraSpanRemove(d_curr);
- sraSpanDestroy(d_curr);
- d_curr = next;
- } else {
- /* Merge this span with previous or next? */
- if (d_curr->_prev != &(dest->front))
- sraSpanMergePrevious(d_curr);
- if (d_curr->_next != &(dest->back))
- sraSpanMergeNext(d_curr);
-
- /* - Move on to the next span */
- if (s_curr->end > d_curr->end) {
- d_curr = d_curr->_next;
- } else {
- s_curr = s_curr->_next;
- }
- }
- }
-
- return !sraSpanListEmpty(dest);
-}
-
-/* -=- Region routines */
-
-sraRegion *
-sraRgnCreate() {
- return (sraRegion*)sraSpanListCreate();
-}
-
-sraRegion *
-sraRgnCreateRect(int x1, int y1, int x2, int y2) {
- sraSpanList *vlist, *hlist;
- sraSpan *vspan, *hspan;
-
- /* - Build the horizontal portion of the span */
- hlist = sraSpanListCreate();
- hspan = sraSpanCreate(x1, x2, NULL);
- sraSpanInsertAfter(hspan, &(hlist->front));
-
- /* - Build the vertical portion of the span */
- vlist = sraSpanListCreate();
- vspan = sraSpanCreate(y1, y2, hlist);
- sraSpanInsertAfter(vspan, &(vlist->front));
-
- sraSpanListDestroy(hlist);
-
- return (sraRegion*)vlist;
-}
-
-sraRegion *
-sraRgnCreateRgn(const sraRegion *src) {
- return (sraRegion*)sraSpanListDup((sraSpanList*)src);
-}
-
-void
-sraRgnDestroy(sraRegion *rgn) {
- sraSpanListDestroy((sraSpanList*)rgn);
-}
-
-void
-sraRgnMakeEmpty(sraRegion *rgn) {
- sraSpanListMakeEmpty((sraSpanList*)rgn);
-}
-
-/* -=- Boolean Region ops */
-
-Bool
-sraRgnAnd(sraRegion *dst, const sraRegion *src) {
- return sraSpanListAnd((sraSpanList*)dst, (sraSpanList*)src);
-}
-
-void
-sraRgnOr(sraRegion *dst, const sraRegion *src) {
- sraSpanListOr((sraSpanList*)dst, (sraSpanList*)src);
-}
-
-Bool
-sraRgnSubtract(sraRegion *dst, const sraRegion *src) {
- return sraSpanListSubtract((sraSpanList*)dst, (sraSpanList*)src);
-}
-
-void
-sraRgnOffset(sraRegion *dst, int dx, int dy) {
- sraSpan *vcurr, *hcurr;
-
- vcurr = ((sraSpanList*)dst)->front._next;
- while (vcurr != &(((sraSpanList*)dst)->back)) {
- vcurr->start += dy;
- vcurr->end += dy;
-
- hcurr = vcurr->subspan->front._next;
- while (hcurr != &(vcurr->subspan->back)) {
- hcurr->start += dx;
- hcurr->end += dx;
- hcurr = hcurr->_next;
- }
-
- vcurr = vcurr->_next;
- }
-}
-
-sraRegion *sraRgnBBox(const sraRegion *src) {
- int xmin=((unsigned int)(int)-1)>>1,ymin=xmin,xmax=1-xmin,ymax=xmax;
- sraSpan *vcurr, *hcurr;
-
- if(!src)
- return sraRgnCreate();
-
- vcurr = ((sraSpanList*)src)->front._next;
- while (vcurr != &(((sraSpanList*)src)->back)) {
- if(vcurr->start<ymin)
- ymin=vcurr->start;
- if(vcurr->end>ymax)
- ymax=vcurr->end;
-
- hcurr = vcurr->subspan->front._next;
- while (hcurr != &(vcurr->subspan->back)) {
- if(hcurr->start<xmin)
- xmin=hcurr->start;
- if(hcurr->end>xmax)
- xmax=hcurr->end;
- hcurr = hcurr->_next;
- }
-
- vcurr = vcurr->_next;
- }
-
- if(xmax<xmin || ymax<ymin)
- return sraRgnCreate();
-
- return sraRgnCreateRect(xmin,ymin,xmax,ymax);
-}
-
-Bool
-sraRgnPopRect(sraRegion *rgn, sraRect *rect, unsigned long flags) {
- sraSpan *vcurr, *hcurr;
- sraSpan *vend, *hend;
- Bool right2left = flags & 2;
- Bool bottom2top = flags & 1;
-
- /* - Pick correct order */
- if (bottom2top) {
- vcurr = ((sraSpanList*)rgn)->back._prev;
- vend = &(((sraSpanList*)rgn)->front);
- } else {
- vcurr = ((sraSpanList*)rgn)->front._next;
- vend = &(((sraSpanList*)rgn)->back);
- }
-
- if (vcurr != vend) {
- rect->y1 = vcurr->start;
- rect->y2 = vcurr->end;
-
- /* - Pick correct order */
- if (right2left) {
- hcurr = vcurr->subspan->back._prev;
- hend = &(vcurr->subspan->front);
- } else {
- hcurr = vcurr->subspan->front._next;
- hend = &(vcurr->subspan->back);
- }
-
- if (hcurr != hend) {
- rect->x1 = hcurr->start;
- rect->x2 = hcurr->end;
-
- sraSpanRemove(hcurr);
- sraSpanDestroy(hcurr);
-
- if (sraSpanListEmpty(vcurr->subspan)) {
- sraSpanRemove(vcurr);
- sraSpanDestroy(vcurr);
- }
-
-#if 0
- printf("poprect:(%dx%d)-(%dx%d)\n",
- rect->x1, rect->y1, rect->x2, rect->y2);
-#endif
- return 1;
- }
- }
-
- return 0;
-}
-
-unsigned long
-sraRgnCountRects(const sraRegion *rgn) {
- unsigned long count = sraSpanListCount((sraSpanList*)rgn);
- return count;
-}
-
-Bool
-sraRgnEmpty(const sraRegion *rgn) {
- return sraSpanListEmpty((sraSpanList*)rgn);
-}
-
-/* iterator stuff */
-sraRectangleIterator *sraRgnGetIterator(sraRegion *s)
-{
- /* these values have to be multiples of 4 */
-#define DEFSIZE 4
-#define DEFSTEP 8
- sraRectangleIterator *i =
- (sraRectangleIterator*)malloc(sizeof(sraRectangleIterator));
- if(!i)
- return NULL;
-
- /* we have to recurse eventually. So, the first sPtr is the pointer to
- the sraSpan in the first level. the second sPtr is the pointer to
- the sraRegion.back. The third and fourth sPtr are for the second
- recursion level and so on. */
- i->sPtrs = (sraSpan**)malloc(sizeof(sraSpan*)*DEFSIZE);
- if(!i->sPtrs) {
- free(i);
- return NULL;
- }
- i->ptrSize = DEFSIZE;
- i->sPtrs[0] = &(s->front);
- i->sPtrs[1] = &(s->back);
- i->ptrPos = 0;
- i->reverseX = 0;
- i->reverseY = 0;
- return i;
-}
-
-sraRectangleIterator *sraRgnGetReverseIterator(sraRegion *s,Bool reverseX,Bool reverseY)
-{
- sraRectangleIterator *i = sraRgnGetIterator(s);
- if(reverseY) {
- i->sPtrs[1] = &(s->front);
- i->sPtrs[0] = &(s->back);
- }
- i->reverseX = reverseX;
- i->reverseY = reverseY;
- return(i);
-}
-
-static Bool sraReverse(sraRectangleIterator *i)
-{
- return( ((i->ptrPos&2) && i->reverseX) ||
- (!(i->ptrPos&2) && i->reverseY));
-}
-
-static sraSpan* sraNextSpan(sraRectangleIterator *i)
-{
- if(sraReverse(i))
- return(i->sPtrs[i->ptrPos]->_prev);
- else
- return(i->sPtrs[i->ptrPos]->_next);
-}
-
-Bool sraRgnIteratorNext(sraRectangleIterator* i,sraRect* r)
-{
- /* is the subspan finished? */
- while(sraNextSpan(i) == i->sPtrs[i->ptrPos+1]) {
- i->ptrPos -= 2;
- if(i->ptrPos < 0) /* the end */
- return(0);
- }
-
- i->sPtrs[i->ptrPos] = sraNextSpan(i);
-
- /* is this a new subspan? */
- while(i->sPtrs[i->ptrPos]->subspan) {
- if(i->ptrPos+2 > i->ptrSize) { /* array is too small */
- i->ptrSize += DEFSTEP;
- i->sPtrs = (sraSpan**)realloc(i->sPtrs, sizeof(sraSpan*)*i->ptrSize);
- }
- i->ptrPos =+ 2;
- if(sraReverse(i)) {
- i->sPtrs[i->ptrPos] = i->sPtrs[i->ptrPos-2]->subspan->back._prev;
- i->sPtrs[i->ptrPos+1] = &(i->sPtrs[i->ptrPos-2]->subspan->front);
- } else {
- i->sPtrs[i->ptrPos] = i->sPtrs[i->ptrPos-2]->subspan->front._next;
- i->sPtrs[i->ptrPos+1] = &(i->sPtrs[i->ptrPos-2]->subspan->back);
- }
- }
-
- if((i->ptrPos%4)!=2) {
- printf("sraRgnIteratorNext: offset is wrong (%d%%4!=2)\n",i->ptrPos);
- return FALSE;
- }
-
- r->y1 = i->sPtrs[i->ptrPos-2]->start;
- r->y2 = i->sPtrs[i->ptrPos-2]->end;
- r->x1 = i->sPtrs[i->ptrPos]->start;
- r->x2 = i->sPtrs[i->ptrPos]->end;
-
- return(-1);
-}
-
-void sraRgnReleaseIterator(sraRectangleIterator* i)
-{
- free(i->sPtrs);
- free(i);
-}
-
-void
-sraRgnPrint(const sraRegion *rgn) {
- sraSpanListPrint((sraSpanList*)rgn);
-}
-
-Bool
-sraClipRect(int *x, int *y, int *w, int *h,
- int cx, int cy, int cw, int ch) {
- if (*x < cx) {
- *w -= (cx-*x);
- *x = cx;
- }
- if (*y < cy) {
- *h -= (cy-*y);
- *y = cy;
- }
- if (*x+*w > cx+cw) {
- *w = (cx+cw)-*x;
- }
- if (*y+*h > cy+ch) {
- *h = (cy+ch)-*y;
- }
- return (*w>0) && (*h>0);
-}
-
-Bool
-sraClipRect2(int *x, int *y, int *x2, int *y2,
- int cx, int cy, int cx2, int cy2) {
- if (*x < cx)
- *x = cx;
- if (*y < cy)
- *y = cy;
- if (*x >= cx2)
- *x = cx2-1;
- if (*y >= cy2)
- *y = cy2-1;
- if (*x2 <= cx)
- *x2 = cx+1;
- if (*y2 <= cy)
- *y2 = cy+1;
- if (*x2 > cx2)
- *x2 = cx2;
- if (*y2 > cy2)
- *y2 = cy2;
- return (*x2>*x) && (*y2>*y);
-}
-
-/* test */
-
-#ifdef SRA_TEST
-/* pipe the output to sort|uniq -u and you'll get the errors. */
-int main(int argc, char** argv)
-{
- sraRegionPtr region, region1, region2;
- sraRectangleIterator* i;
- sraRect rect;
- Bool b;
-
- region = sraRgnCreateRect(10, 10, 600, 300);
- region1 = sraRgnCreateRect(40, 50, 350, 200);
- region2 = sraRgnCreateRect(0, 0, 20, 40);
-
- sraRgnPrint(region);
- printf("\n[(10-300)[(10-600)]]\n\n");
-
- b = sraRgnSubtract(region, region1);
- printf("%s ",b?"true":"false");
- sraRgnPrint(region);
- printf("\ntrue [(10-50)[(10-600)](50-200)[(10-40)(350-600)](200-300)[(10-600)]]\n\n");
-
- sraRgnOr(region, region2);
- printf("%ld\n6\n\n", sraRgnCountRects(region));
-
- i = sraRgnGetIterator(region);
- while(sraRgnIteratorNext(i, &rect))
- printf("%dx%d+%d+%d ",
- rect.x2-rect.x1,rect.y2-rect.y1,
- rect.x1,rect.y1);
- sraRgnReleaseIterator(i);
- printf("\n20x10+0+0 600x30+0+10 590x10+10+40 30x150+10+50 250x150+350+50 590x100+10+200 \n\n");
-
- i = sraRgnGetReverseIterator(region,1,0);
- while(sraRgnIteratorNext(i, &rect))
- printf("%dx%d+%d+%d ",
- rect.x2-rect.x1,rect.y2-rect.y1,
- rect.x1,rect.y1);
- sraRgnReleaseIterator(i);
- printf("\n20x10+0+0 600x30+0+10 590x10+10+40 250x150+350+50 30x150+10+50 590x100+10+200 \n\n");
-
- i = sraRgnGetReverseIterator(region,1,1);
- while(sraRgnIteratorNext(i, &rect))
- printf("%dx%d+%d+%d ",
- rect.x2-rect.x1,rect.y2-rect.y1,
- rect.x1,rect.y1);
- sraRgnReleaseIterator(i);
- printf("\n590x100+10+200 250x150+350+50 30x150+10+50 590x10+10+40 600x30+0+10 20x10+0+0 \n\n");
-
- sraRgnDestroy(region);
- sraRgnDestroy(region1);
- sraRgnDestroy(region2);
-
- return(0);
-}
-#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-20 04:49:51 +0000