Taking Snapshots Tutorial

C4WorkSpace.m

//
//  C4WorkSpace.m
//  Taking Snapshots Tutorial
//
//  Created by Travis Kirton.
//

#import "C4WorkSpace.h"

@implementation C4WorkSpace {
    C4Camera *cam;
}

-(void)setup {
    cam = [C4Camera cameraWithFrame:CGRectMake(0, 0, 240, 320)];
    [self.canvas addCamera:cam];
    [cam initCapture];

    [self styleCamera];
    
    [self addGesture:TAP name:@"capture" action:@"captureImage"];
    [self numberOfTouchesRequired:1 forGesture:@"capture"];

    [self listenFor:@"imageWasCaptured" fromObject:cam andRunMethod:@"putCapturedImageOnCanvas"];

    [self addGesture:TAP name:@"frontBack" action:@"switchFrontBack"];
    [self numberOfTouchesRequired:2 forGesture:@"frontBack"];
}

-(void)styleCamera {
    cam.center = CGPointMake(self.canvas.width / 3, self.canvas.center.y);
    cam.borderColor = [UIColor whiteColor];
    cam.borderWidth = 1.0f;
    cam.shadowOpacity = 0.8f;
    cam.shadowOffset = CGSizeMake(5,5);
    cam.zPosition = 5000;
}

-(void)captureImage {
    [cam captureImage];
}

-(void)switchFrontBack {
    cam.animationDuration = 1.0f;
    cam.perspectiveDistance = 500.0f;
    cam.rotationY += TWO_PI;

    if(cam.cameraPosition == CAMERAFRONT || cam.cameraPosition == CAMERAUNSPECIFIED) {
        cam.cameraPosition = CAMERABACK;
    } else {
        cam.cameraPosition = CAMERAFRONT;
    }
}

-(void)putCapturedImageOnCanvas {
    C4Image *img = cam.capturedImage;
    img.width = 240.0f;
    img.center = CGPointMake(self.canvas.width * 2 / 3, self.canvas.center.y);
    [self addInteraction:img];
    [self.canvas addImage:img];
}

-(void)addInteraction:(C4Image *)img {
    [img addGesture:PAN name:@"move" action:@"move:"];
    [img addGesture:TAP name:@"remove" action:@"removeFromSuperview"];
    [img numberOfTapsRequired:2 forGesture:@"remove"];
}

@end