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- /**********************************************************************\
-
- File: Diagonal wipe.c
-
- Purpose: Graphic effect from offscreen bitmap to main window (on
- screen). See comments below for more description.
-
-
- Jotto ][ -=- a simple word game, revisited
- Copyright (C) 1993 Mark Pilgrim
-
- 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 "msg timing.h"
- #include "wipe dispatch.h"
-
- #define BoxSize 13
- #define CorrectTime 2
-
- /* If you make a long enough region starting at the bottomright corner and
- making a strip up and right of <BoxSize> width, all you have to do is move
- the region left until the entire screen is filled. Dave thinks ideas like
- this should be taken out and shot, but it works. */
-
- void DiagonalWipe(GrafPtr sourceGrafPtr, GrafPtr destGrafPtr, short theWindowHeight, short theWindowWidth)
- {
- short counter,maxmax;
- Rect source;
- RgnHandle archie;
-
- maxmax=theWindowWidth+BoxSize;
- archie=NewRgn();
- OpenRgn();
- MoveTo(theWindowWidth+BoxSize,theWindowHeight+BoxSize);
- Line(0,BoxSize);
- Line(-maxmax,maxmax);
- Line(-BoxSize,0);
- Line(maxmax,-maxmax);
- CloseRgn(archie);
- source.top=source.left=0;
- source.bottom=theWindowHeight;
- source.right=theWindowWidth;
-
- /* the only tricky part to this code is the starting param for counter */
- for (counter=2+(theWindowWidth+theWindowHeight)/BoxSize; counter>=0; counter--)
- {
- StartTiming();
- OffsetRgn(archie,0,-BoxSize);
- CopyBits(&(sourceGrafPtr->portBits),&(destGrafPtr->portBits),&source,&source,
- 0,archie);
- TimeCorrection(CorrectTime);
- }
- DisposeRgn(archie);
- }
-