Add FBO texture example

example-fboTexture/.gitignore

@@ -0,0 +1,6 @@
+obj
+*.xcodeproj
+*.plist
+*.xcconfig
+*~
+config.make

example-fboTexture/Makefile

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+# Attempt to load a config.make file.
+# If none is found, project defaults in config.project.make will be used.
+ifneq ($(wildcard config.make),)
+	include config.make
+endif
+
+# make sure the the OF_ROOT location is defined
+ifndef OF_ROOT
+    OF_ROOT=../../..
+endif
+
+# call the project makefile!
+include $(OF_ROOT)/libs/openFrameworksCompiled/project/makefileCommon/compile.project.mk

example-fboTexture/addons.make

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+ofxPiMapper
+ofxUI
+ofxXmlSettings

example-fboTexture/bin/.gitignore

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+*.app
+data/*.jpg
+data/settings.xml
+data/surfaces.xml

example-fboTexture/bin/data/defaultSurfaces.xml

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+<surfaces>
+    <surface>
+        <vertices>
+            <vertex>
+                <x>250.000000000</x>
+                <y>34.000000000</y>
+            </vertex>
+            <vertex>
+                <x>374.000000000</x>
+                <y>201.000000000</y>
+            </vertex>
+            <vertex>
+                <x>535.000000000</x>
+                <y>35.000000000</y>
+            </vertex>
+        </vertices>
+        <texCoords>
+            <texCoord>
+                <x>0.101999998</x>
+                <y>0.335999995</y>
+            </texCoord>
+            <texCoord>
+                <x>0.328000009</x>
+                <y>0.689999998</y>
+            </texCoord>
+            <texCoord>
+                <x>0.705999970</x>
+                <y>0.393999994</y>
+            </texCoord>
+        </texCoords>
+        <source>
+            <source-type>image</source-type>
+            <source-name>image1.jpg</source-name>
+        </source>
+    </surface>
+    <surface>
+        <vertices>
+            <vertex>
+                <x>24.396121979</x>
+                <y>259.170288086</y>
+            </vertex>
+            <vertex>
+                <x>250.000000000</x>
+                <y>34.000000000</y>
+            </vertex>
+            <vertex>
+                <x>214.630920410</x>
+                <y>282.926849365</y>
+            </vertex>
+        </vertices>
+        <texCoords>
+            <texCoord>
+                <x>0.251666665</x>
+                <y>0.090000004</y>
+            </texCoord>
+            <texCoord>
+                <x>0.449999988</x>
+                <y>0.696666658</y>
+            </texCoord>
+            <texCoord>
+                <x>0.870000005</x>
+                <y>0.173333332</y>
+            </texCoord>
+        </texCoords>
+        <source>
+            <source-type>image</source-type>
+            <source-name>image5.jpg</source-name>
+        </source>
+    </surface>
+    <surface>
+        <vertices>
+            <vertex>
+                <x>75.709846497</x>
+                <y>450.636596680</y>
+            </vertex>
+            <vertex>
+                <x>214.630920410</x>
+                <y>282.926849365</y>
+            </vertex>
+            <vertex>
+                <x>24.396121979</x>
+                <y>259.170288086</y>
+            </vertex>
+        </vertices>
+        <texCoords>
+            <texCoord>
+                <x>0.981523871</x>
+                <y>0.471785098</y>
+            </texCoord>
+            <texCoord>
+                <x>0.245601788</x>
+                <y>0.110941604</y>
+            </texCoord>
+            <texCoord>
+                <x>0.662217021</x>
+                <y>0.714698017</y>
+            </texCoord>
+        </texCoords>
+        <source>
+            <source-type>image</source-type>
+            <source-name>image4.jpg</source-name>
+        </source>
+    </surface>
+    <surface>
+        <vertices>
+            <vertex>
+                <x>527.148498535</x>
+                <y>277.815002441</y>
+            </vertex>
+            <vertex>
+                <x>320.170959473</x>
+                <y>461.102355957</y>
+            </vertex>
+            <vertex>
+                <x>285.250427246</x>
+                <y>209.424682617</y>
+            </vertex>
+        </vertices>
+        <texCoords>
+            <texCoord>
+                <x>0.031067841</x>
+                <y>0.511202157</y>
+            </texCoord>
+            <texCoord>
+                <x>0.450178742</x>
+                <y>0.116164304</y>
+            </texCoord>
+            <texCoord>
+                <x>0.543386877</x>
+                <y>0.609848201</y>
+            </texCoord>
+        </texCoords>
+        <source>
+            <source-type>image</source-type>
+            <source-name>none</source-name>
+        </source>
+    </surface>
+</surfaces>

example-fboTexture/src/main.cpp

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+#include "ofMain.h"
+#include "ofApp.h"
+
+int main()
+{
+#ifdef TARGET_RASPBERRY_PI
+	ofSetupOpenGL(600, 500, OF_FULLSCREEN);
+#else
+    ofSetupOpenGL(600, 500, OF_WINDOW);
+#endif
+	ofRunApp(new ofApp());
+}

example-fboTexture/src/ofApp.cpp

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+#include "ofApp.h"
+
+void ofApp::setup()
+{
+    bShowInfo = false;
+    
+    // check if the surfaces.xml file is there
+    // if not - load defaultSurfaces.xml
+    if ( ofFile::doesFileExist("surfaces.xml") ) {
+        surfaceManager.loadXmlSettings("surfaces.xml");
+    } else {
+        surfaceManager.loadXmlSettings("defaultSurfaces.xml");
+    }
+    
+    // Pass the surface manager to the mapper graphical user interface
+    gui.setSurfaceManager( &surfaceManager );
+    
+    // Create FBO
+    fbo = new ofFbo();
+    fbo->allocate( 500, 500 );
+    setFboAsTexture();
+    
+    // Genereate rects
+    int numRects = 20; // change this to add more or less rects
+    for ( int i=0; i<numRects; i++ ) {
+        rects.push_back( ofRectangle(0, ofRandom(fbo->getHeight()), fbo->getWidth(), ofRandom(20)) );
+        rectSpeeds.push_back( (1.0f + ofRandom(5)) );
+    }
+}
+
+void ofApp::update()
+{
+    // Move rects
+    for ( int i=0; i<rects.size(); i++ ) {
+        rects[i].y += rectSpeeds[i];
+        if ( rects[i].y > fbo->getHeight() ) {
+            rects[i].y = -rects[i].getHeight();
+        }
+    }
+    
+    // Fill FBO
+    fbo->begin();
+    ofClear(0);
+    ofBackground(0);
+    ofSetColor(255);
+    for ( int i=0; i<rects.size(); i++ ) {
+        ofRect( rects[i] );
+    }
+    fbo->end();
+}
+
+void ofApp::draw()
+{
+    // Draw the piMapper GUI
+    gui.draw();
+    
+    if ( bShowInfo ) {
+        // Draw instructions
+        stringstream ss;
+        ss << "There are 4 modes:\n\n";
+        ss << " 1. Presentation mode\n";
+        ss << " 2. Texture mapping mode\n";
+        ss << " 3. Projection mapping mode\n";
+        ss << " 4. Source selection mode\n\n";
+        ss << "You can switch between the modes by using <1>, <2>, <3> and <4> keys on the keyboard.\n\n";
+        ss << "Press <r> or <n> to add random or normal surface.\n";
+        ss << "Press <s> to save the composition.\n";
+        ss << "Press <f> to toggle fullscreen.\n";
+        ss << "Press <a> to reassign the fbo texture to the first surface\n";
+        ss << "Hit <i> to hide this message.";
+        
+        ofDrawBitmapStringHighlight(ss.str(), 10, 20, ofColor(0,0,0,100), ofColor(255,255,255,200));
+    }
+}
+
+void ofApp::exit()
+{
+    // Clear FBO from mem
+    delete fbo;
+}
+
+void ofApp::keyPressed(int key)
+{
+	cout << "Key pressed: " << static_cast<char>(key) << endl;
+    
+    switch (key) {
+        case '1': gui.setMode(ofxGuiMode::NONE); break;
+        case '2': gui.setMode(ofxGuiMode::TEXTURE_MAPPING); break;
+        case '3': gui.setMode(ofxGuiMode::PROJECTION_MAPPING); break;
+        case '4': gui.setMode(ofxGuiMode::SOURCE_SELECTION); break;
+        case 'i': bShowInfo = !bShowInfo; break;
+        case 'r': addRandomSurface(); break;
+        case 'n': addSurface(); break;
+        case 'f': ofToggleFullscreen(); break;
+        case 's': surfaceManager.saveXmlSettings("surfaces.xml"); break;
+        case 'a': setFboAsTexture(); break;
+        default: break;
+    }
+}
+
+void ofApp::addRandomSurface()
+{
+    int surfaceType = ofxSurfaceType::TRIANGLE_SURFACE;
+    vector<ofVec2f> vertices;
+    vertices.push_back( ofVec2f( ofRandomWidth(), ofRandomHeight() ) );
+    vertices.push_back( ofVec2f( ofRandomWidth(), ofRandomHeight() ) );
+    vertices.push_back( ofVec2f( ofRandomWidth(), ofRandomHeight() ) );
+    vector<ofVec2f> texCoords;
+    texCoords.push_back( ofVec2f( ofRandomuf(), ofRandomuf() ) );
+    texCoords.push_back( ofVec2f( ofRandomuf(), ofRandomuf() ) );
+    texCoords.push_back( ofVec2f( ofRandomuf(), ofRandomuf() ) );
+    surfaceManager.addSurface(surfaceType, vertices, texCoords);
+    
+    // select this surface right away
+    surfaceManager.selectSurface(surfaceManager.size()-1);
+}
+
+void ofApp::addSurface()
+{
+    int surfaceType = ofxSurfaceType::TRIANGLE_SURFACE;
+    vector<ofVec2f> vertices;
+    vertices.push_back( ofVec2f( (float)ofGetWidth()/2.0f, 0.0f ) );
+    vertices.push_back( ofVec2f( (float)ofGetWidth(), (float)ofGetHeight() ) );
+    vertices.push_back( ofVec2f( 0.0f, (float)ofGetHeight() ) );
+    vector<ofVec2f> texCoords;
+    texCoords.push_back( ofVec2f( 0.5f, 0.0f ) );
+    texCoords.push_back( ofVec2f( 1.0f, 1.0f ) );
+    texCoords.push_back( ofVec2f( 0.0f, 1.0f ) );
+    surfaceManager.addSurface(surfaceType, vertices, texCoords);
+    
+    // select this surface right away
+    surfaceManager.selectSurface(surfaceManager.size()-1);
+}
+
+void ofApp::setFboAsTexture()
+{
+    surfaceManager.getSurface(0)->setTexture( &fbo->getTextureReference() );
+}

example-fboTexture/src/ofApp.h

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+#ifndef H_OF_APP
+#define H_OF_APP
+
+#include "ofMain.h"
+#include "ofxPiMapper.h"
+
+class ofApp : public ofBaseApp
+{
+public: 
+	void setup();
+	void update();
+	void draw();
+    void exit();
+
+	void keyPressed(int key);
+    
+    void addRandomSurface();
+    void addSurface();
+    void setFboAsTexture();
+    
+    ofImage image;
+    ofxSurfaceManager surfaceManager;
+    ofxSurfaceManagerGui gui;
+    bool bShowInfo;
+    ofFbo* fbo;    
+    vector<ofRectangle> rects;
+    vector<float> rectSpeeds;
+};
+
+#endif

example/src/ofApp.cpp

@@ -2,7 +2,7 @@
 
 void ofApp::setup()
 {
-    image.loadImage("TestPatternInvert.jpg");
+    //image.loadImage("TestPatternInvert.jpg");
     bShowInfo = false;
     
     /*
@@ -29,20 +29,6 @@ void ofApp::setup()
 void ofApp::update()
 {
 	ofBackground(0);
-    
-    ofVec2f p;
-    p.x = ofRandomWidth();
-    p.y = ofRandomHeight();
-    //surfaceManager.getSurface(1)->setVertex(0, p);
-    //triangleSurface.setVertex(0, p);
-    
-    ofVec2f t;
-    t.x = ofRandomuf();
-    t.y = ofRandomuf();
-    //surfaceManager.getSurface(1)->setTexCoord(0, t);
-    //triangleSurface.setTexCoord(0, t);
-    
-    //surfaceManager.update();
 }
 
 void ofApp::draw()