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- #include "timing.h"
-
- #define SUB_HOR 20
- #define SUB_VER 20
- #define AREA (SUB_HOR * SUB_VER)
- #define CorrectTime 1
- #define theWindowWidth (boundsRect.right-boundsRect.left)
- #define theWindowHeight (boundsRect.bottom-boundsRect.top)
-
- pascal short RandomWipe(GrafPtr sourceGrafPtr, GrafPtr destGrafPtr, Rect boundsRect);
-
- /* Basically, we divide the window into a bunch of blocks, and copy
- each to the screen in random order. */
- pascal short RandomWipe(GrafPtr sourceGrafPtr, GrafPtr destGrafPtr, Rect boundsRect)
- {
- short order[AREA];
- short i;
- long randtemp;
- short ordertemp;
- Rect subBox;
- Boolean everyOther;
-
- everyOther=FALSE;
- for(i = 0; i < AREA; i++)
- order[i] = i;
-
- for(i = (AREA - 1); i >= 0; i--) {
- randtemp = ((((long)Random()) +32767) * (i + 1)) / 65535;
-
- ordertemp = order[randtemp];
- order[randtemp] = order[i];
- order[i] = ordertemp;
- }
-
- for(i = 0; i < AREA; i++) {
- StartTiming();
- subBox.top = ((order[i] / SUB_VER) * theWindowHeight) / SUB_VER;
- subBox.left = ((order[i] % SUB_HOR) * theWindowWidth) / SUB_HOR;
- subBox.bottom = (((order[i] / SUB_VER) + 1) * theWindowHeight) / SUB_VER;
- subBox.right = (((order[i] % SUB_HOR) + 1) * theWindowWidth) / SUB_HOR;
- OffsetRect(&subBox, boundsRect.left, boundsRect.top);
- CopyBits(&(sourceGrafPtr->portBits), &(destGrafPtr->portBits),
- &subBox, &subBox, 0, 0L);
- if (everyOther)
- TimeCorrection(CorrectTime);
- everyOther=!everyOther;
- }
-
- return 0;
- }
-