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b5f50eb85d
- First draft implementation of the CVGenerator class (note it's incomplete and not working yet) - updated the TODO list
129 lines
3.1 KiB
Objective-C
129 lines
3.1 KiB
Objective-C
//
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// CVGenerator.m
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// freej
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//
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// Created by xant on 3/7/09.
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// Copyright 2009 dyne.org. All rights reserved.
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//
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// XXX - WIP
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#import "CVGenerator.h"
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@implementation CVGenerator
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- (id)initWithFrame:(NSRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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}
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return self;
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}
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- (void)dealloc
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{
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if (renderTimer)
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[renderTimer release];
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[lock release];
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[super dealloc];
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}
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- (CIImage *)getTexture
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{
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[lock lock];
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if (currentImage)
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freejImage = [currentImage retain];
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[lock unlock];
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return freejImage;
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}
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- (void)prepareOpenGL
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{
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CVReturn ret;
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NSAutoreleasePool *pool;
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pool = [[NSAutoreleasePool alloc] init];
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// Create CGColorSpaceRef
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
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// Create CIContext
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ciContext = [[CIContext contextWithCGLContext:[[self openGLContext] CGLContextObj]
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pixelFormat:[[self pixelFormat] CGLPixelFormatObj]
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options:nil] retain];
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CGColorSpaceRelease(colorSpace);
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renderTimer = [[NSTimer timerWithTimeInterval:0.001 //a 1ms time interval
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target:self
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selector:@selector(timerFired:)
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userInfo:nil
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repeats:YES] retain];
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[[NSRunLoop currentRunLoop] addTimer:renderTimer
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forMode:NSDefaultRunLoopMode];
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[[NSRunLoop currentRunLoop] addTimer:renderTimer
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forMode:NSEventTrackingRunLoopMode]; //Ensure timer fires during resize
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generator = [[CIFilter filterWithName:@"CIStarShineGenerator"] retain];
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[generator setValue:[[CIColor colorWithString:@"0.5 0.7 0.3 1.0"] retain] forKey:@"inputColor"];
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[generator setDefaults];
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needsReshape = YES;
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[pool release];
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}
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- (void)drawRect:(NSRect)rect {
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NSRect frame = [self frame];
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NSRect bounds = [self bounds];
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[lock lock];
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if(needsReshape) // if the view has been resized, reset the OpenGL coordinate system
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{
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GLfloat minX, minY, maxX, maxY;
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minX = NSMinX(bounds);
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minY = NSMinY(bounds);
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maxX = NSMaxX(bounds);
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maxY = NSMaxY(bounds);
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[[self openGLContext] makeCurrentContext];
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[self update];
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if(NSIsEmptyRect([self visibleRect]))
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{
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glViewport(0, 0, 1, 1);
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} else {
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glViewport(0, 0, frame.size.width ,frame.size.height);
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}
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(minX, maxX, minY, maxY, -1.0, 1.0);
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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if (currentImage)
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[currentImage release];
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currentImage = [generator valueForKey:@"outputImage"];
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[currentImage retain];
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[ciContext drawImage:currentImage
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inRect:NSRectToCGRect([self frame])
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fromRect:[currentImage extent]];
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[[self openGLContext] flushBuffer];
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[self setNeedsDisplay:NO];
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[lock unlock];
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}
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// Timer callback method
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- (void)timerFired:(id)sender
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{
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// It is good practice in a Cocoa application to allow the system to send the -drawRect:
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// message when it needs to draw, and not to invoke it directly from the timer.
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// All we do here is tell the display it needs a refresh
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[self setNeedsDisplay:YES];
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}
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@end
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