init

README.md

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+ofxCompositeImage
+===
+
+openFrameworks addon for creating composite image.
+
+## Dependencies
+
+
+This addon depends on the followings:
+
+- ofxOpenGLContextScope
+
+
+## License
+The MIT License (MIT)
+
+Copyright (c) 2013 hideyuki saito
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

src/ofxCompositeImgae.cpp

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+#include "ofxCompositeImgae.h"
+
+using namespace ofxCompositeImage;
+
+Composer::~Composer()
+{
+    if (isThreadRunning())
+    {
+        stopThread();
+    }
+}
+
+void Composer::addLayers(vector<Material> layers, Setting setting)
+{
+    lock();
+    tasks.push_back(layers);
+    settings.push_back(setting);
+    unlock();
+
+    if (!isThreadRunning()) startThread();
+}
+
+void Composer::threadedFunction()
+{
+    ofxOpenGLContextScope scope;
+
+    while (isThreadRunning())
+    {
+        ofLogNotice() << "is main thread? : " << isMainThread();
+        if (0 < tasks.size())
+        {
+            lock();
+            composite();
+            unlock();
+        }
+
+        ofSleepMillis(10);
+    }
+}
+
+void Composer::composite()
+{
+    ofFbo fbo;
+    fbo.allocate((int)settings.at(0).getWidth(), (int)settings.at(0).getHeight());
+    fbo.begin();
+    {
+        ofClear(0, 0, 0);
+        ofBackground(settings.at(0).getBackgroundColor());
+
+        ofPushStyle();
+        {
+            ofEnableAlphaBlending();
+            for (int i = 0; i < tasks.at(0).size(); ++i)
+            {
+                Material m = tasks.at(0).at(i);
+                m.resize();
+                m.draw();
+            }
+            ofDisableAlphaBlending();
+        }
+        ofPopStyle();
+    }
+    fbo.end();
+
+    ofImage output;
+    fbo.readToPixels(output.getPixelsRef());
+    output.update();
+    output.resize(settings.at(0).getWidth(), settings.at(0).getHeight());
+
+    tasks.erase(tasks.begin());
+    settings.erase(settings.begin());
+
+    if (tasks.empty()) stopThread();
+
+    ofNotifyEvent(compositionComplete, output, this);
+}

src/ofxCompositeImgae.h

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+#pragma once
+
+#include "ofMain.h"
+#include "ofxOpenGLContextScope.h"
+
+namespace ofxCompositeImage
+{
+    class Setting;
+    class Material;
+    class Composer;
+};
+
+#pragma mark - class ofxCompositeImageSetting
+
+class ofxCompositeImage::Setting
+{
+
+public:
+
+    Setting();
+    Setting(float width, float height, ofColor backgroundColor)
+    {
+        this->width = width;
+        this->height = height;
+        this->backgroundColor = backgroundColor;
+    }
+
+    float getWidth() { return width; }
+    float getHeight() { return height; }
+    ofColor getBackgroundColor() { return backgroundColor; }
+
+private:
+
+    float width;
+    float height;
+    ofColor backgroundColor;
+};
+
+class ofxCompositeImage::Material
+{
+
+public:
+
+    Material() {};
+    ~Material() {};
+
+    Material(ofImage img, float x, float y, float width, float height)
+    {
+        this->image = img;
+        this->x = x;
+        this->y = y;
+        this->width = width;
+        this->height = height;
+    }
+
+    void setup(ofImage img, float x, float y, float width, float height)
+    {
+        this->image = img;
+        this->x = x;
+        this->y = y;
+        this->width = width;
+        this->height = height;
+    }
+
+    void setImage(ofImage img) { this->image = img; }
+
+    void setPosition(float x, float y)
+    {
+        this->x = x;
+        this->y = y;
+    };
+
+    void setWidth(float width) { this->width = width; }
+    void setHeight(float height) { this->height = height; }
+
+    void resize()
+    {
+        image.resize(width, height);
+    }
+
+    void draw()
+    {
+        image.draw(x, y);
+    }
+
+private:
+
+    ofImage image;
+    float x, y, width, height;
+};
+
+
+# pragma mark - class ofxCompositeImgae
+
+class ofxCompositeImage::Composer : public ofThread
+{
+
+public:
+
+    Composer() { ofxOpenGLContextScope::setup(); }
+    ~Composer();
+
+    void addLayers(vector<Material> layers, Setting setting);
+
+    void threadedFunction();
+
+    ofEvent<ofImage> compositionComplete;
+
+private:
+
+    vector< vector<Material> > tasks;
+    vector<Setting> settings;
+
+    void composite();
+};