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/* FreeJ
* (c) Copyright 2009 Andrea Guzzo <xant@dyne.org>
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Public License as published
* by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* This source code 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.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
// XXX - WIP
#import <CVGenerator.h>
@implementation CVGenerator
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
- (void)dealloc
{
if (renderTimer)
[renderTimer release];
[lock release];
[super dealloc];
}
- (CIImage *)getTexture
{
[lock lock];
if (currentImage)
freejImage = [currentImage retain];
[lock unlock];
return freejImage;
}
- (void)prepareOpenGL
{
NSAutoreleasePool *pool;
pool = [[NSAutoreleasePool alloc] init];
// Create CGColorSpaceRef
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
// Create CIContext
ciContext = [[CIContext contextWithCGLContext:[[self openGLContext] CGLContextObj]
pixelFormat:[[self pixelFormat] CGLPixelFormatObj]
options:nil] retain];
CGColorSpaceRelease(colorSpace);
renderTimer = [[NSTimer timerWithTimeInterval:0.001 //a 1ms time interval
target:self
selector:@selector(timerFired:)
userInfo:nil
repeats:YES] retain];
[[NSRunLoop currentRunLoop] addTimer:renderTimer
forMode:NSDefaultRunLoopMode];
[[NSRunLoop currentRunLoop] addTimer:renderTimer
forMode:NSEventTrackingRunLoopMode]; //Ensure timer fires during resize
generator = [[CIFilter filterWithName:@"CIStarShineGenerator"] retain];
[generator setValue:[[CIColor colorWithString:@"0.5 0.7 0.3 1.0"] retain] forKey:@"inputColor"];
[generator setDefaults];
needsReshape = YES;
[pool release];
}
- (void)drawRect:(NSRect)rect {
NSRect frame = [self frame];
NSRect bounds = [self bounds];
[lock lock];
if(needsReshape) // if the view has been resized, reset the OpenGL coordinate system
{
GLfloat minX, minY, maxX, maxY;
minX = NSMinX(bounds);
minY = NSMinY(bounds);
maxX = NSMaxX(bounds);
maxY = NSMaxY(bounds);
[[self openGLContext] makeCurrentContext];
[self update];
if(NSIsEmptyRect([self visibleRect]))
{
glViewport(0, 0, 1, 1);
} else {
glViewport(0, 0, frame.size.width ,frame.size.height);
}
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(minX, maxX, minY, maxY, -1.0, 1.0);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
}
if (currentImage)
[currentImage release];
currentImage = [generator valueForKey:@"outputImage"];
[currentImage retain];
[ciContext drawImage:currentImage
inRect:NSRectToCGRect([self frame])
fromRect:[currentImage extent]];
[[self openGLContext] flushBuffer];
[self setNeedsDisplay:NO];
[lock unlock];
}
// Timer callback method
- (void)timerFired:(id)sender
{
// It is good practice in a Cocoa application to allow the system to send the -drawRect:
// message when it needs to draw, and not to invoke it directly from the timer.
// All we do here is tell the display it needs a refresh
[self setNeedsDisplay:YES];
}
@end
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