Further work on fontrendering module:

* Introducing TextRenderer processor that renders a simple text using the FontAtlas
* Introducing FontRenderingDemo pipeline

modules/fontrendering/pipelines/fontrenderingdemo.cpp

+// ================================================================================================
+// 
+// This file is part of the CAMPVis Software Framework.
+// 
+// If not explicitly stated otherwise: Copyright (C) 2012-2014, all rights reserved,
+//      Christian Schulte zu Berge <christian.szb@in.tum.de>
+//      Chair for Computer Aided Medical Procedures
+//      Technische Universitaet Muenchen
+//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany
+// 
+// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
+// 
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 
+// except in compliance with the License. You may obtain a copy of the License at
+// 
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software distributed under the 
+// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+// 
+// ================================================================================================
+
+#include "fontrenderingdemo.h"
+
+namespace campvis {
+    namespace fontrendering {
+
+        FontRenderingDemo::FontRenderingDemo(DataContainer* dc)
+            : AutoEvaluationPipeline(dc)
+            , _tr(&_canvasSize)
+        {
+            addProcessor(&_tr);
+        }
+
+        FontRenderingDemo::~FontRenderingDemo() {
+        }
+
+        void FontRenderingDemo::init() {
+            AutoEvaluationPipeline::init();
+
+            _tr.p_outputImage.setValue("text.rendered");
+            _renderTargetID.setValue("text.rendered");
+        }
+
+    }
+}

modules/fontrendering/pipelines/fontrenderingdemo.h

+// ================================================================================================
+// 
+// This file is part of the CAMPVis Software Framework.
+// 
+// If not explicitly stated otherwise: Copyright (C) 2012-2014, all rights reserved,
+//      Christian Schulte zu Berge <christian.szb@in.tum.de>
+//      Chair for Computer Aided Medical Procedures
+//      Technische Universitaet Muenchen
+//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany
+// 
+// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
+// 
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 
+// except in compliance with the License. You may obtain a copy of the License at
+// 
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software distributed under the 
+// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+// 
+// ================================================================================================
+
+#ifndef FONTRENDERINGDEMO_H__
+#define FONTRENDERINGDEMO_H__
+
+#include "core/pipeline/autoevaluationpipeline.h"
+#include "modules/fontrendering/processors/textrenderer.h"
+
+
+namespace campvis {
+namespace fontrendering {
+
+    class FontRenderingDemo : public AutoEvaluationPipeline {
+    public:
+        /**
+         * Creates a AutoEvaluationPipeline.
+         */
+        FontRenderingDemo(DataContainer* dc);
+
+        /**
+         * Virtual Destructor
+         **/
+        virtual ~FontRenderingDemo();
+
+        /// \see AutoEvaluationPipeline::init()
+        virtual void init();
+
+        /// \see AbstractPipeline::getName()
+        virtual const std::string getName() const { return getId(); };
+        static const std::string getId() { return "fontrendering::FontRenderingDemo"; };
+
+
+        TextRenderer _tr;
+    };
+
+}
+}
+
+#endif // FONTRENDERINGDEMO_H__

modules/fontrendering/processors/textrenderer.cpp

+// ================================================================================================
+// 
+// This file is part of the CAMPVis Software Framework.
+// 
+// If not explicitly stated otherwise: Copyright (C) 2012-2014, all rights reserved,
+//      Christian Schulte zu Berge <christian.szb@in.tum.de>
+//      Chair for Computer Aided Medical Procedures
+//      Technische Universitaet Muenchen
+//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany
+// 
+// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
+// 
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 
+// except in compliance with the License. You may obtain a copy of the License at
+// 
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software distributed under the 
+// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+// 
+// ================================================================================================
+
+#include "textrenderer.h"
+
+#include "core/datastructures/renderdata.h"
+#include "modules/fontrendering/tools/fontatlas.h"
+
+namespace campvis {
+namespace fontrendering {
+
+    const std::string TextRenderer::loggerCat_ = "CAMPVis.modules.io.TextRenderer";
+
+    TextRenderer::TextRenderer(IVec2Property* viewportSizeProp) 
+        : VisualizationProcessor(viewportSizeProp)
+        , p_text("Text", "Text", "The Quick Brown Fox Jumps Over The Lazy Dog")
+        , p_position("Position", "Position (in Viewport Coordinates)", cgt::ivec2(50), cgt::ivec2(-1000), cgt::ivec2(1000))
+        , p_fontSize("FontSize", "Font Size", 20, 4, 100)
+        , p_color("Color", "Font Color", cgt::vec4(1.f), cgt::vec4(0.f), cgt::vec4(1.f))
+        , p_outputImage("LightId", "Light Name/ID", "lightsource", DataNameProperty::WRITE)
+        , _atlas(nullptr)
+    {
+        addProperty(p_text);
+        addProperty(p_position);
+        addProperty(p_fontSize, INVALID_RESULT | INVALID_PROPERTIES);
+        addProperty(p_color);
+        addProperty(p_outputImage);
+    }
+
+    TextRenderer::~TextRenderer() {
+
+    }
+
+    void TextRenderer::init() {
+        VisualizationProcessor::init();
+        _atlas = new FontAtlas("C:\\temp\\FreeSans.ttf", 20);
+    }
+
+    void TextRenderer::denit() {
+        delete _atlas;
+        VisualizationProcessor::deinit();
+    }
+    void TextRenderer::updateResult(DataContainer& data) {
+        FramebufferActivationGuard fag(this);
+        createAndAttachColorTexture();
+        createAndAttachDepthTexture();
+
+        _atlas->renderText(p_text.getValue(), p_position.getValue(), p_color.getValue(), cgt::vec2(1.f) / cgt::vec2(_viewportSizeProperty->getValue()));
+
+        data.addData(p_outputImage.getValue(), new RenderData(_fbo));
+    }
+
+    void TextRenderer::updateProperties(DataContainer& dataContainer) {
+        delete _atlas;
+        _atlas = nullptr;
+        _atlas = new FontAtlas("C:\\temp\\FreeSans.ttf", p_fontSize.getValue());
+    }
+
+
+}
+}
\ No newline at end of file

modules/fontrendering/processors/textrenderer.h

+// ================================================================================================
+// 
+// This file is part of the CAMPVis Software Framework.
+// 
+// If not explicitly stated otherwise: Copyright (C) 2012-2014, all rights reserved,
+//      Christian Schulte zu Berge <christian.szb@in.tum.de>
+//      Chair for Computer Aided Medical Procedures
+//      Technische Universitaet Muenchen
+//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany
+// 
+// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".
+// 
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 
+// except in compliance with the License. You may obtain a copy of the License at
+// 
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software distributed under the 
+// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
+// either express or implied. See the License for the specific language governing permissions 
+// and limitations under the License.
+// 
+// ================================================================================================
+
+#ifndef TEXTRENDERER_H__
+#define TEXTRENDERER_H__
+
+#include <string>
+
+#include "core/pipeline/visualizationprocessor.h"
+#include "core/properties/allproperties.h"
+
+namespace campvis {
+namespace fontrendering {
+
+    class FontAtlas;
+
+    /**
+     * Renders a text using OpenGL
+     */
+    class TextRenderer : public VisualizationProcessor {
+    public:
+        /**
+         * Constructs a new TextRenderer Processor.
+         **/
+        TextRenderer(IVec2Property* viewportSizeProp);
+
+        /**
+         * Destructor
+         **/
+        virtual ~TextRenderer();
+
+        /// \see AbstractProcessor::getName()
+        virtual const std::string getName() const { return "TextRenderer"; };
+        /// \see AbstractProcessor::getDescription()
+        virtual const std::string getDescription() const { return "Renders a text using OpenGL."; };
+        /// \see AbstractProcessor::getAuthor()
+        virtual const std::string getAuthor() const { return "Christian Schulte zu Berge <christian.szb@in.tum.de>"; };
+        /// \see AbstractProcessor::getProcessorState()
+        virtual ProcessorState getProcessorState() const { return AbstractProcessor::TESTING; };
+
+
+        virtual void init();
+        virtual void denit();
+
+        StringProperty p_text;              ///< Text to render
+        IVec2Property p_position;           ///< Position of text in viewport coordinates
+        IntProperty p_fontSize;           ///< Font size to use
+        Vec4Property p_color;               ///< Color to use
+        DataNameProperty p_outputImage;     ///< Name/ID for the output image with the rendered image
+
+    protected:
+        /// \see AbstractProcessor::updateResult
+        virtual void updateResult(DataContainer& dataContainer);
+        /// \see AbstractProcessor::updateProperties
+        virtual void updateProperties(DataContainer& dataContainer);
+
+        FontAtlas* _atlas;
+
+        static const std::string loggerCat_;
+    };
+
+}
+}
+
+#endif // TEXTRENDERER_H__