ClingOFPlayground

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ClingOFPlayground

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Cling + OF = Playground

ClingOFPlayground 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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# ClingOFPlayground

ClingOFPlayground lets you live code openFrameoworks.

It is an [openFrameworks](http://openframeworks.cc) application that have [Cling](https://root.cern.ch/cling) embedded inside of it with an in-app text editor that lets you write and execute c++ code.

Example video:

[![ClingOFPlayground](https://raw.githubusercontent.com/galsasson/ClingOFPlayground/master/video.png)](https://vimeo.com/198692331 "ClingOFPlayground")

## Build

Only OSX currently, contributions for Linux/Windows are welcome.

$ git clone https://github.com/galsasson/ClingOFPlayground
	$ cd ClingOFPlayground
	$ git submodule update --init --recursive

Cling needs the path to the SDK used to build the embedding app (ClingOFPlayground) this path is currently set in ofApp.cpp, defined in the macro **OSX_SDK_PATH**. This path needs to be adjusted depending on your setup. Default value points to **/
Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk**

open **apps/ClingOFPlayground/ClingOFPlayground.xcodeproj** with xcode and build.

## Use

To execute code select the line/s to execute and press shift+return. Its important to realize that the code executs on the next **update**. If you want to execute something over and over (like a draw function) you have to first declare a function and then add it as a listener to an event like **ofEvents().draw** or similar.

You must include ofMain.h first, otherwise Cling will not know about OF symbols.

Simple example:

#include "ofMain.h"
	// declare the function (creates a new symbol with a global scope)
	void mydraw(ofEventArgs& args) {
		ofSetColor(255, 0, 0);
		ofFill();
		ofDrawRectangle(10, 10, 20, 20);
	}
	// add listener
	ofAddListener(ofEvents().draw, &mydraw);

If you omit the semicolon at the end of a line and execute it, cling will act as a REPL and will print the return value.

Symbol unloading is supported but very hard to manage. Every variable and function you define will be added as a symbol in the global scope. It is currenty essentially imposible to unload a symbol once defined, so use lambdas instead.

### Using workspace/clingof.hpp

clingof.hpp is a sort of a mailbox between the app and Cling. By including it you can easily redefine draw and update functions, redefine the audioOut function, or manipulate the scene graph of the app (using [ofxInterface](https://github.com/galsasson/ofxInterface)).

Example:

#include "workspace/clingof.hpp"
	cof.update = [](){
		ofSetWindowTitle(ofToString(ofGetFrameRate()));
	}
	cof.draw = []() {
		ofSetColor(0, 255, 0);
		ofDrawRectangle(0, 0, 50, 50);
	}
	cof.audioOut = [](ofSoundBuffer& buff) {
		// white noise
		for (int i=0; i<buff.getNumFrames(); i++) {
		    // left
    		buff[i*buff.getNumChannels()] = ofRandom(-0.2,0.2);
    		// right
    		buff[i*buff.getNumChannels()+1] = ofRandom(-0.2,0.2);
  		}
	}
	
	
	// Using the scene graph root
	// create button
	BitmapTextButton* tmpBtn = new BitmapTextButton();
	tmpBtn->setup("Hello!!!");
	cof.scene.addChild(tmpBtn);
	tmpBtn->setPosition(10, 10);

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