画像をタッチ編集！ アートなiPhoneカメラアプリを作る：Retinaに映える！ iOS美麗アプリ制作入門（3）（1/2 ページ）

#pragma once
 
#include "ofMain.h"
#include "ofxiPhone.h"
#include "ofxiPhoneExtras.h"
 
class testApp : public ofxiPhoneApp {
 
public:
    void setup();
    void update();
    void draw();
    void exit();
    
    void touchDown(ofTouchEventArgs &touch);
    void touchMoved(ofTouchEventArgs &touch);
    void touchUp(ofTouchEventArgs &touch);
    void touchDoubleTap(ofTouchEventArgs &touch);
    void touchCancelled(ofTouchEventArgs &touch);
    
    void lostFocus();
    void gotFocus();
    void gotMemoryWarning();
    void deviceOrientationChanged(int newOrientation);
    
    // the camera image needs to be flipped, so we'll use this memory for that. 
    unsigned char * cameraPixels;
    ofxiPhoneImagePicker * camera;
    ofImage    photo;
    ofPoint imgPos; 
};

    void setup();
    void update();
    void draw();
    void exit();
    
    void touchDown(ofTouchEventArgs &touch);
    void touchMoved(ofTouchEventArgs &touch);
    void touchUp(ofTouchEventArgs &touch);
    void touchDoubleTap(ofTouchEventArgs &touch);
    void touchCancelled(ofTouchEventArgs &touch);
    
    void lostFocus();
    void gotFocus();
    void gotMemoryWarning();
    void deviceOrientationChanged(int newOrientation);

    // the camera image needs to be flipped, so we'll use this memory for that. 
    unsigned char * cameraPixels;
    ofxiPhoneImagePicker * camera;
    ofImage    photo;
    ofPoint imgPos;

#include "testApp.h"
//--------------------------------------------------------------
void testApp::setup(){    
    // register touch events
    ofRegisterTouchEvents(this);
    
    // initialize the accelerometer
    ofxAccelerometer.setup();
    
    //iPhoneAlerts will be sent to this.
    ofxiPhoneAlerts.addListener(this);
    
    cameraPixels = NULL; 
    camera = new ofxiPhoneImagePicker();
    camera->setMaxDimension(480); //otherwise we will have enormous images
    imgPos.x=ofGetWidth()/2;
    imgPos.y=ofGetHeight()/2;
    
    photo.loadImage("images/instructions.png");
}

//--------------------------------------------------------------
void testApp::update()
{
    if(camera->imageUpdated){
        
        // the pixels seem to be flipped, so let's unflip them: 
        if (cameraPixels == NULL){
            // first time, let's get memory based on how big the image is: 
            cameraPixels = new unsigned char [camera->width * camera->height*4];
        }

        // now, lets flip the image vertically:
        for (int i = 0; i < camera->height; i++){
            memcpy(cameraPixels+(camera->height-i-1)*camera->width*4, camera->pixels+i*camera->width*4, camera->width*4);
        }

        // finally, set the image from pixels...
        photo.setFromPixels(cameraPixels,camera->width, camera->height, OF_IMAGE_COLOR_ALPHA);
        
        imgPos.x=ofGetWidth()/2;
        imgPos.y=ofGetHeight()/2;
        
        camera->imageUpdated=false;

void testApp::draw()
{
    photo.draw(imgPos.x-photo.width/2,imgPos.y-photo.height/2);
}

//--------------------------------------------------------------
void testApp::touchDown(ofTouchEventArgs &touch){
    if(touch.id == 1){
        camera->openCamera();
        imgPos.x=ofGetWidth()/2;
        imgPos.y=ofGetHeight()/2;
    }
}
 
//--------------------------------------------------------------
void testApp::touchMoved(ofTouchEventArgs &touch){
    if(touch.id == 0){
        imgPos.x=touch.x;
        imgPos.y=touch.y;
    }        
}