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- /**********************************************************************\
-
- File: BoxOut fade.c
-
- Purpose: Graphic effect to fade main screen to solid pattern.
- 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 BOXES 50 /* increase this for a finer grained but more timely effect */
- #define CorrectTime 2
- #define theWindowWidth (boundsRect.right-boundsRect.left)
- #define theWindowHeight (boundsRect.bottom-boundsRect.top)
-
- pascal short BoxOutFade(Rect boundsRect, Pattern *thePattern);
-
- pascal short BoxOutFade(Rect boundsRect, Pattern *thePattern)
- {
- Rect theRect;
- int cenx, ceny;
- int boxnum;
-
- cenx = theWindowWidth / 2;
- ceny = theWindowHeight / 2;
-
- for(boxnum = 0; boxnum <= BOXES; boxnum++)
- {
- StartTiming();
-
- /* this is not the most efficient method, but the overhead of the
- multiplies and the redundant copying is hidden by the timing mechanism */
- theRect.left = cenx - ((boxnum * cenx) / BOXES);
- theRect.right = cenx + ((boxnum * cenx) / BOXES);
- theRect.top = ceny - ((boxnum * ceny) / BOXES);
- theRect.bottom = ceny + ((boxnum * ceny) / BOXES);
- OffsetRect(&theRect, boundsRect.left, boundsRect.top);
-
- FillRect(&theRect, *thePattern);
- TimeCorrection(CorrectTime);
- }
-
- return 0;
- }
-