Heeelllloooooooooooooooo everyone!
I’m a little newbie, but i’m trying to build a code with 3 fbo, like…
3 triangle (mesh), with 3view (fbo on mesh) of a 3D drawing (i take camera ribbon for it), but my code is not working yet: That’s why i’m asking:
Where did i make a mistake? Please… sensei? 
here, the code:
And thank you for everything that you can told about this little code ^^
the .h
#pragma once
#include “ofMain.h”
class testApp : public ofBaseApp{
public:
void setup();
void update();
void draw();
void customDraw3d();
void drawMainFbo();
void drawFbo1();
void drawFbo2();
void keyPressed (int key);
void keyReleased(int key);
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 windowResized(int w, int h);
void dragEvent(ofDragInfo dragInfo);
void gotMessage(ofMessage msg);
int ecran = (ofGetWidth()/2);
ofFbo Mainfbo;
ofFbo fbo1;
ofFbo fbo2;
int MX = false;
ofCamera cam;
//this holds all of our points
vector points;
//this keeps track of the center of all the points
ofVec3f center;
ofMesh MainMesh;
ofMesh mesh1;
ofMesh mesh2;
};
the .cpp:
#include “testApp.h”
//--------------------------------------------------------------
void testApp::setup(){
ofBackground(50);
ofSetFrameRate(40);
//fbo
fbo1.allocate(ecran, ecran, GL_RGB);
fbo2.allocate(ecran, ecran, GL_RGB);
Mainfbo.allocate(ecran, ecran*2, GL_RGB);
}
//--------------------------------------------------------------
void testApp::update(){
//Dessin des fbo
fbo1.begin();
drawFbo1();
fbo1.end();
fbo2.begin();
drawFbo2();
fbo2.end();
Mainfbo.begin();
drawMainFbo();
Mainfbo.end();
////////////////////////////////////////////////////////////////
//fbo1.bind();
ofBeginShape();
mesh1.addVertex(ofVec3f(0,0,0));
mesh1.addVertex(ofVec3f(0,ofGetHeight(),0));
mesh1.addVertex(ofVec3f(ecran,ofGetHeight()/10,0));
mesh1.addVertex(ofVec3f(ecran,0,0));
ofEndShape();
//fbo1.unbind();
//fbo2.bind();
ofBeginShape();
mesh2.addVertex(ofVec3f(ofGetWidth(),0,0));
mesh2.addVertex(ofVec3f(ofGetWidth(),ofGetHeight(),0));
mesh2.addVertex(ofVec3f(ecran,ofGetHeight()/10,0));
mesh2.addVertex(ofVec3f(ecran,0,0));
ofEndShape();
//fbo2.unbind();
//Mainfbo.bind();
ofBeginShape();
MainMesh.addVertex(ofVec3f(0,ofGetHeight(),0));
MainMesh.addVertex(ofVec3f(ecran,ofGetHeight()/10,0));
MainMesh.addVertex(ofVec3f(ofGetWidth(),ofGetHeight(),0));
ofEndShape();
//Mainfbo.unbind();
////////////////////////////////////////////////////////////////
}
//--------------------- ENVIRRONEMENT 3D -----------------------
void testApp::customDraw3d(){
ofPushMatrix();
ofBox(30);
ofTranslate(-ecran, -ecran+130);
if (MX == true) {
ofRotate(ofGetMouseY());
}
else if (MX == false){
//-------------------------- TEST -----------------------------
ofSetColor(255,100,0);
//do the same thing from the first example…
ofMesh mesh;
mesh.setMode(OF_PRIMITIVE_TRIANGLE_STRIP);
for(int i = 1; i < points.size(); i++){
//find this point and the next point
ofVec3f thisPoint = points[i-1];
ofVec3f nextPoint = points[i];
//get the direction from one to the next.
//the ribbon should fan out from this direction
ofVec3f direction = (nextPoint - thisPoint);
//get the distance from one point to the next
float distance = direction.length();
//get the normalized direction. normalized vectors always have a length of one
//and are really useful for representing directions as opposed to something with length
ofVec3f unitDirection = direction.normalized();
//find both directions to the left and to the right
ofVec3f toTheLeft = unitDirection.getRotated(-90, ofVec3f(0,0,1));
ofVec3f toTheRight = unitDirection.getRotated(90, ofVec3f(0,0,1));
//use the map function to determine the distance.
//the longer the distance, the narrower the line.
//this makes it look a bit like brush strokes
float thickness = ofMap(distance, 0, 30, 10, 1, true);
//calculate the points to the left and to the right
//by extending the current point in the direction of left/right by the length
ofVec3f leftPoint = thisPoint+toTheLeft*thickness;
ofVec3f rightPoint = thisPoint+toTheRight*thickness;
//add these points to the triangle strip
mesh.addVertex(ofVec3f(leftPoint.x, leftPoint.y, leftPoint.z));
mesh.addVertex(ofVec3f(rightPoint.x, rightPoint.y, rightPoint.z));
}
//end the shape
mesh.draw();
}
//-------------------------- TEST -----------------------------
ofPopMatrix();
}
//-------------------------- FBO 1 -----------------------------
void testApp::drawFbo1(){
//écran clair
ofClear(0,0,0, 0);
ofPushMatrix();
customDraw3d();
ofPopMatrix();
}
//-------------------------- FBO 2 -----------------------------
void testApp::drawFbo2(){
//écran clair
ofClear(0,0,0, 0);
ofPushMatrix();
customDraw3d();
ofPopMatrix();
}
//------------------------- MAIN FBO ---------------------------
void testApp::drawMainFbo(){
//écran clair
ofClear(0,0,0, 0);
ofPushMatrix();
ofTranslate(ecran/2,ecran/2,0);
customDraw3d();
ofPopMatrix();
}
//--------------------------------------------------------------
void testApp::draw(){
glEnable(GL_TRIANGLES);
Mainfbo.bind();
MainMesh.drawFaces();
Mainfbo.unbind();
fbo1.bind();
mesh1.drawFaces();
fbo1.bind();
fbo2.bind();
mesh2.drawFaces();
fbo2.bind();
//Pointeur souris.
ofFill();
ofSetColor(255, 0, 0);
ofSphere(ofGetMouseX(), ofGetMouseY(), 10);
}
//--------------------------------------------------------------
void testApp::keyPressed(int key){
int MX = true;
}
//--------------------------------------------------------------
void testApp::keyReleased(int key){
}
//--------------------------------------------------------------
void testApp::mouseMoved(int x, int y ){
}
//--------------------------------------------------------------
void testApp::mouseDragged(int x, int y, int button){
ofVec3f mousePoint(x,y,0);
points.push_back(mousePoint);
}
//--------------------------------------------------------------
void testApp::mousePressed(int x, int y, int button){
}
//--------------------------------------------------------------
void testApp::mouseReleased(int x, int y, int button){
}
//--------------------------------------------------------------
void testApp::windowResized(int w, int h){
}
//--------------------------------------------------------------
void testApp::gotMessage(ofMessage msg){
}
//--------------------------------------------------------------
void testApp::dragEvent(ofDragInfo dragInfo){
}