openframeworks

I just started reading about OpenGL topics, specifically about Viewing for my current needs. I am trying to understand glFrustum for a perspective projection of objects that I have drawn on the screen and as I understand glFrustum would make the farther objects smaller than the nearer objects. I am using openFrameworks here for drawing objects such as Image / Box etc. and here's a short example of what I am trying to do: openFrameworks draw method draw() { glMatrixMode(GL_PROJECTION); glLoadIdentity(); glFrustum(-1.0, 1.0, -1.0, 1.0, 3.0, 500.0); glMatrixMode(GL_MODELVIEW); sceneImage.draw(0,0

I'm in the middle of a difficult choice. I'd like to learn a language that can help me create application with a strong artistic/creative/graphic component and use it for commercial projects for my customers. My first choice was OpenGL ES, i think of it as the "Standard" way to go through. But, in the meanwhile, i discovered this site : http://www.creativeapplications.net/ where i found many cool apps for ios, for most built using OpenFramewors and Cinder . My question is: why choose this 2 "wrapper" instead of OpenGL? I need to understand benefits and disadvantages. I'm not sure that using

I have been reading a lot about openFrameworks and Processing, But still can't make the distinction other than one is in C++ and the other in Java. Can someone tell me which is for what exactly? George Profenza You are correct, one is C++ and the other is Java, and those differences apply to these frameworks, so it's up to your preferences/project scope to decide which one is best for you. With Processing : You get a minimal IDE, but can easily use Eclipse or other Java IDEs. You get memory management (garbage collection) You can publish applets online(via Java Applet or 'slimmed down'

What I was thinking to do is to convert ofColor to l*a*b color space and measure the euclidean distance. But I don't know how should I do it in openframeworks? George Profenza I'm not very experienced with c++ but I ported this snippet over: //ported from http://cookbooks.adobe.com/post_Useful_color_equations__RGB_to_LAB_converter-14227.html struct Color{ float R,G,B,X,Y,Z,L,a,b; }; #define REF_X 95.047; // Observer= 2°, Illuminant= D65 #define REF_Y 100.000; #define REF_Z 108.883; Color rgb2xyz(int R,int G,int B){ float r = R / 255.0; float g = G / 255.0; float b = B / 255.0; if (r > 0.04045)

My iOS app (using openFrameworks) crashes 30-40% of the time on launch on this line: if(soundInputPtr!=NULL) soundInputPtr->audioIn(tempBuffer, ioData->mBuffers[i].mDataByteSize/2, 1); which is inside the larger function in ofxiPhoneSoundStream.m static OSStatus recordingCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData) { I am doing audio setup with ofSoundStreamSetup(0, 1, this, 44100, 256, 4); in setup() . In the simulator this crash happens 100% of the time. Any idea (a)

My problem is: I am receiving warning which is presented in the topic of a post. It is really flustrating. The autocomplete does not work with the code, beside which the warning occurs. The standard is set to C++14 . For instance: Boxes[2].get()->setPosition(Boxes[2].get()->getPosition() + v1); It gives me a warning and when I try to write another Boxes[2]. the autocomplete does not work. The declaration of an object: <shared_ptr<ofxBox2dRect>> Boxes; I tried to solve my problem using these links: Unable to resolve identifier on netbeans “Unable to resolve identifier” , although build is

I am coming from Xcode, trying to compile a project in Visual Studio 2010, and I get the following errors: 2>ofxCLeye.obj : error LNK2019: unresolved external symbol "struct _GUID __cdecl CLEyeGetCameraUUID(int)" (?CLEyeGetCameraUUID@@YA?AU_GUID@@H@Z) referenced in function "public: static int __cdecl ofxCLeye::listDevices(void)" (?listDevices@ofxCLeye@@SAHXZ) 2>ofxCLeye.obj : error LNK2019: unresolved external symbol "int __cdecl CLEyeGetCameraCount(void)" (?CLEyeGetCameraCount@@YAHXZ) referenced in function "public: static int __cdecl ofxCLeye::listDevices(void)" (?listDevices@ofxCLeye@