home *** CD-ROM | disk | FTP | other *** search
- /**********************************************************************\
-
- File: Quadrant scroll 2 fade.c
-
- Purpose: Graphic effect from offscreen bitmap to main window (on
- screen). See comments below for more description.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program in a file named "GNU General Public License".
- If not, write to the Free Software Foundation, 675 Mass Ave,
- Cambridge, MA 02139, USA.
-
- \**********************************************************************/
-
- #include "timing.h"
-
- #define CorrectTime 3
- #define theWindowHeight (boundsRect.bottom-boundsRect.top)
- #define theWindowWidth (boundsRect.right-boundsRect.left)
- #define NUM_ITERATIONS 25
-
- pascal short QuadrantScroll2Fade(Rect boundsRect, Pattern *thePattern);
-
- /* 4 regions, splitting the screen into 4 quadrants. Scroll the screen down in
- the top-left quadrant, right in the top-right, up in the bottom-right,
- left in the bottom-left. */
-
- pascal short QuadrantScroll2Fade(Rect boundsRect, Pattern *thePattern)
- {
- int x;
- Rect tldest, trdest, bldest, brdest;
- Rect tlscroll, trscroll, blscroll, brscroll;
- int cx,cy;
- int BoxSize, HBoxSize;
-
- BoxSize=theWindowHeight/(NUM_ITERATIONS*2);
- HBoxSize=theWindowWidth/(NUM_ITERATIONS*2);
-
- cx = boundsRect.left + theWindowWidth / 2;
- cy = boundsRect.top + theWindowHeight / 2;
-
- tlscroll=trscroll=blscroll=brscroll=tldest=trdest=bldest=brdest=boundsRect;
- tlscroll.right=trscroll.left=blscroll.right=brscroll.left=
- tldest.right=trdest.left=bldest.right=brdest.left=cx;
- tlscroll.bottom=trscroll.bottom=blscroll.top=brscroll.top=
- tldest.bottom=trdest.bottom=bldest.top=brdest.top=cy;
- tldest.bottom=tldest.top+BoxSize;
- bldest.right=bldest.left+HBoxSize;
- brdest.top=brdest.bottom-BoxSize;
- trdest.left=trdest.right-HBoxSize;
-
- for (x=0; x<NUM_ITERATIONS; x++)
- {
- StartTiming();
- ScrollTheRect(&blscroll, HBoxSize, 0, 0L);
- FillRect(&bldest, *thePattern);
-
- ScrollTheRect(&tlscroll, 0, BoxSize, 0L);
- FillRect(&tldest, *thePattern);
-
- ScrollTheRect(&trscroll, -HBoxSize, 0, 0L);
- FillRect(&trdest, *thePattern);
-
- ScrollTheRect(&brscroll, 0, -BoxSize, 0L);
- FillRect(&brdest, *thePattern);
-
- TimeCorrection(CorrectTime);
- }
-
- FillRect(&boundsRect, *thePattern); /* fill the whole screen to end it */
-
- return 0;
- }
-