andrewm@0: /*
andrewm@0:   TouchKeys: multi-touch musical keyboard control software
andrewm@0:   Copyright (c) 2013 Andrew McPherson
andrewm@0: 
andrewm@0:   This program is free software: you can redistribute it and/or modify
andrewm@0:   it under the terms of the GNU General Public License as published by
andrewm@0:   the Free Software Foundation, either version 3 of the License, or
andrewm@0:   (at your option) any later version.
andrewm@0:  
andrewm@0:   This program is distributed in the hope that it will be useful,
andrewm@0:   but WITHOUT ANY WARRANTY; without even the implied warranty of
andrewm@0:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
andrewm@0:   GNU General Public License for more details.
andrewm@0: 
andrewm@0:   You should have received a copy of the GNU General Public License
andrewm@0:   along with this program.  If not, see <http://www.gnu.org/licenses/>.
andrewm@0:  
andrewm@0:   =====================================================================
andrewm@0: 
andrewm@0:   RawSensorDisplay.h: simple graph for showing raw TouchKeys sensor values
andrewm@0: */
andrewm@0: 
andrewm@0: #ifndef __touchkeys__RawSensorDisplay__
andrewm@0: #define __touchkeys__RawSensorDisplay__
andrewm@0: 
andrewm@0: #include <iostream>
andrewm@0: #include <vector>
andrewm@0: //#include <OpenGL/gl.h>
andrewm@0: #include "../JuceLibraryCode/JuceHeader.h"
andrewm@0: #include "../TouchKeys/PianoTypes.h"
andrewm@0: #include "../Utility/Node.h"
andrewm@0: #include "OpenGLDisplayBase.h"
andrewm@0: 
andrewm@0: 
andrewm@0: // This class uses OpenGL to draw a bar graph of key sensor data,
andrewm@0: // for the purpose of debugging and validating individual keys
andrewm@0: 
andrewm@0: class RawSensorDisplay : public OpenGLDisplayBase {
andrewm@0: 	// Internal data structures and constants
andrewm@0: private:
andrewm@0:     // Display margins
andrewm@0:     static const float kDisplaySideMargin;
andrewm@0:     static const float kDisplayBottomMargin;
andrewm@0:     static const float kDisplayTopMargin;
andrewm@0:     
andrewm@0:     // Size of bar graphs and spacing
andrewm@0:     static const float kDisplayBarWidth;
andrewm@0:     static const float kDisplayBarSpacing;
andrewm@0:     static const float kDisplayBarHeight;
andrewm@0:     
andrewm@0: 	typedef struct {
andrewm@0: 		float x;
andrewm@0: 		float y;
andrewm@0: 	} Point;
andrewm@0: 	
andrewm@0: public:
andrewm@0: 	RawSensorDisplay();
andrewm@0: 	
andrewm@27:     // Set canvas for triggering rendering;
andrewm@27:     void setCanvas(OpenGLJuceCanvas *canvas) { canvas_ = canvas; }
andrewm@27:     void tellCanvasToRepaint();
andrewm@27:     
andrewm@0: 	// Setup methods for display size and keyboard range
andrewm@0: 	void setDisplaySize(float width, float height);
andrewm@0:     float aspectRatio() { return totalDisplayWidth_ / totalDisplayHeight_; }
andrewm@0: 	
andrewm@0: 	// Drawing methods
andrewm@0: 	void render();
andrewm@0: 	
andrewm@0: 	// Interaction methods
andrewm@0: 	void mouseDown(float x, float y);
andrewm@0: 	void mouseDragged(float x, float y);
andrewm@0: 	void mouseUp(float x, float y);
andrewm@0: 	void rightMouseDown(float x, float y);
andrewm@0: 	void rightMouseDragged(float x, float y);
andrewm@0: 	void rightMouseUp(float x, float y);
andrewm@0:     
andrewm@0:     // Data update methods
andrewm@0:     void setDisplayData(std::vector<int> const& values);
andrewm@0:     
andrewm@0: private:
andrewm@0:     // Convert mathematical XY coordinate space to drawing positions
andrewm@0:     float graphToDisplayX(float x);
andrewm@0:     float graphToDisplayY(float y);
andrewm@0:     
andrewm@0: 	void refreshViewport();
andrewm@0: 	
andrewm@0: 	// Conversion from internal coordinate space to external pixel values and back
andrewm@0: 	Point screenToInternal(Point& inPoint);
andrewm@0: 	Point internalToScreen(Point& inPoint);
andrewm@0: 	
andrewm@0:     
andrewm@0: private:
andrewm@27: 	OpenGLJuceCanvas *canvas_;                      // Reference to object which handles rendering
andrewm@27:     
andrewm@0: 	float displayPixelWidth_, displayPixelHeight_;	// Pixel resolution of the surrounding window
andrewm@0: 	float totalDisplayWidth_, totalDisplayHeight_;	// Size of the internal view (centered around origin)
andrewm@0:     float yMin_, yMax_;                             // Range of the graph axes
andrewm@0:     
andrewm@0: 	CriticalSection displayMutex_;					// Synchronize access between data and display threads
andrewm@0:     std::vector<int> displayValues_;                // Values to display as a bar graph
andrewm@0: };
andrewm@0: 
andrewm@0: #endif /* defined(__touchkeys__RawSensorDisplay__) */