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@tgfrerer
Created July 28, 2017 17:04
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minimal demo app showing camera frustum drawing
#include "ofMain.h"
class ofApp: public ofBaseApp {
ofEasyCam cam[2];
size_t activeCam = 1;
public:
void ofApp::setup() {
cam[0].setupPerspective( false, 30, 20.f, 500.f );
cam[0].setDistance( 20 );
cam[1].setupPerspective( false, 60, 5.f, 2000.f );
cam[1].setDistance( 50 );
ofSetBackgroundColor( ofColor::fromHex( 0x333333 ) );
};
//--------------------------------------------------------------
void ofApp::update() {
};
//--------------------------------------------------------------
void ofApp::draw() {
ofEnableDepthTest();
glCullFace( GL_CCW );
glEnable( GL_CULL_FACE );
cam[activeCam].begin();
ofSetColor( ofColor::blueSteel, 128 );
ofDrawSphere( { 0,0,-200 }, 50 );
ofSetColor( ofColor::white );
cam[( activeCam + 1 ) % 2].drawFrustum();
cam[( activeCam + 1 ) % 2].draw();
cam[activeCam].end();
glDisable( GL_CULL_FACE );
ofDisableDepthTest();
};
//--------------------------------------------------------------
void ofApp::keyPressed( int key ) {
};
//--------------------------------------------------------------
void ofApp::keyReleased( int key ) {
switch ( key ) {
case 'o':
( !cam[0].getOrtho() ) ? cam[0].enableOrtho() : cam[0].disableOrtho();
break;
case 'c':
cam[activeCam].disableMouseInput();
activeCam = ( activeCam + 1 ) % 2;
cam[activeCam].enableMouseInput();
default:
break;
}
};
void mouseMoved( int x, int y ) {};
void mouseDragged( int x, int y, int button ) {};
void mousePressed( int x, int y, int button ) {};
void mouseReleased( int x, int y, int button ) {};
void mouseEntered( int x, int y ) {};
void mouseExited( int x, int y ) {};
void windowResized( int w, int h ) {};
void dragEvent( ofDragInfo dragInfo ) {};
void gotMessage( ofMessage msg ) {};
};
//========================================================================
int main( ){
ofSetupOpenGL(1024,768,OF_WINDOW); // <-------- setup the GL context
// this kicks off the running of my app
// can be OF_WINDOW or OF_FULLSCREEN
// pass in width and height too:
ofRunApp(new ofApp());
}
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