home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Mac Format 1994 October
/
Macformat17.cdr
/
Shareware City
/
Developers
/
shutdown-fx-20-c
/
Fade module ƒ
/
◊ Fades ƒ
/
Corner circle fade.c
< prev
next >
Wrap
C/C++ Source or Header
|
1994-07-11
|
2KB
|
75 lines
/**********************************************************************\
File: Corner circle fade.c
Purpose: Graphic effect to fade main window 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 gap 8 /* difference between one radius and the next */
#define CorrectTime 2
pascal short main(Rect boundsRect, Pattern *thePattern);
/* Make progressively larger circle regions, centered at the top-left corner
of the screen. Quickdraw takes care of all the excess space off the screen
that you include in the region. */
pascal short main(Rect boundsRect, Pattern *thePattern)
{
Rect theRect;
int cx, cy;
RgnHandle curregion, boundsRgn, sectrgn;
Point zeropoint;
zeropoint.v=boundsRect.bottom;
zeropoint.h=boundsRect.right;
SetRect(&theRect, boundsRect.left-gap, boundsRect.top-gap, boundsRect.left+gap,
boundsRect.top+gap);
boundsRgn=NewRgn();
RectRgn(boundsRgn, &boundsRect);
sectrgn=NewRgn();
curregion=NewRgn();
do
{
StartTiming();
SetEmptyRgn(curregion);
OpenRgn();
FrameOval(&theRect);
CloseRgn(curregion);
SectRgn(curregion, boundsRgn, sectrgn);
FillRgn(sectrgn, *thePattern);
theRect.left-=gap;
theRect.right+=gap;
theRect.top-=gap;
theRect.bottom+=gap;
TimeCorrection(CorrectTime);
}
while (!(PtInRgn(zeropoint,curregion)));
DisposeRgn(curregion);
DisposeRgn(boundsRgn);
DisposeRgn(sectrgn);
return 0;
}