add very simple (rudimentary) time series graphing example

tweak camera near plane distance, less sensitive mouse wheel

examples/CommonInterfaces/Common2dCanvasInterface.h

@@ -7,6 +7,8 @@ struct Common2dCanvasInterface
 	virtual int createCanvas(const char* canvasName, int width, int height)=0;
 	virtual void destroyCanvas(int canvasId)=0;
 	virtual void setPixel(int canvasId, int x, int y, unsigned char red, unsigned char green,unsigned char blue, unsigned char alpha)=0;
+	virtual void getPixel(int canvasId, int x, int y, unsigned char& red, unsigned char& green,unsigned char& blue, unsigned char& alpha)=0;
+
 	virtual void refreshImageData(int canvasId)=0;
 
 };

examples/CommonInterfaces/CommonGraphicsAppInterface.h

@@ -187,7 +187,7 @@ struct CommonGraphicsApp
 				float cameraDistance = 	camera->getCameraDistance();
 				if (deltay<0 || cameraDistance>1)
 				{
-					cameraDistance -= deltay*0.1f;
+					cameraDistance -= deltay*0.01f;
 					if (cameraDistance<1)
 						cameraDistance=1;
 					camera->setCameraDistance(cameraDistance);

examples/ExampleBrowser/ExampleEntries.cpp

@@ -34,6 +34,7 @@
 #include "../SharedMemory/PhysicsServerExample.h"
 #include "../SharedMemory/PhysicsClientExample.h"
 #include "../Constraints/TestHingeTorque.h"
+#include "../RenderingExamples/TimeSeriesExample.h"
 
 
 #ifdef ENABLE_LUA
@@ -204,6 +205,7 @@ static ExampleEntry gDefaultExamples[]=
 	ExampleEntry(0,"Rendering"),
 	ExampleEntry(1,"Instanced Rendering", "Simple example of fast instanced rendering, only active when using OpenGL3+.",RenderInstancingCreateFunc),
 	ExampleEntry(1,"CoordinateSystemDemo","Show the axis and positive rotation direction around the axis.", CoordinateSystemCreateFunc),
+	ExampleEntry(1,"Time Series", "Render some value(s) in a 2D graph window, shifting to the left", TimeSeriesCreateFunc)
 	
 };
 

examples/ExampleBrowser/GwenGUISupport/GraphingTexture.h

@@ -24,6 +24,13 @@ struct GraphingTexture
 		m_imageData[x*4+y*4*m_width+3] = alpha;
 	}
 	
+	void getPixel(int x, int y, unsigned char& red, unsigned char& green, unsigned char& blue, unsigned char& alpha)
+	{
+		red = m_imageData[x*4+y*4*m_width+0];
+		green = m_imageData[x*4+y*4*m_width+1];
+		blue = m_imageData[x*4+y*4*m_width+2];
+		alpha = m_imageData[x*4+y*4*m_width+3];
+	}
 	void uploadImageData();
 	
 	int getTextureId()

examples/ExampleBrowser/OpenGLExampleBrowser.cpp

@@ -578,6 +578,14 @@ struct QuickCanvas : public Common2dCanvasInterface
 		btAssert(m_curNumGraphWindows==1);
 		m_gt[canvasId]->setPixel(x,y,red,green,blue,alpha);
 	}
+	
+	virtual void getPixel(int canvasId, int x, int y, unsigned char& red, unsigned char& green,unsigned char& blue, unsigned char& alpha)
+	{
+		btAssert(canvasId==0);//hardcoded
+		btAssert(m_curNumGraphWindows==1);
+		m_gt[canvasId]->getPixel(x,y,red,green,blue,alpha);
+	}
+	
 	virtual void refreshImageData(int canvasId)
 	{
 		m_gt[canvasId]->uploadImageData();

examples/OpenGLWindow/SimpleCamera.cpp

@@ -12,8 +12,8 @@ struct SimpleCameraInternalData
 		m_cameraUp(b3MakeVector3(0,1,0)),
 		m_cameraUpAxis(1),
 		m_cameraForward(b3MakeVector3(1,0,0)),
-		m_frustumZNear(1),
+		m_frustumZNear(0.01),
-		m_frustumZFar(10000),
+		m_frustumZFar(1000),
 		m_yaw(20),
 		m_pitch(0),
 		m_aspect(1)

examples/RenderingExamples/TimeSeriesExample.h

@@ -0,0 +1,8 @@
+#ifndef TIME_SERIES_EXAMPLE_H
+#define TIME_SERIES_EXAMPLE_H
+
+class CommonExampleInterface*    TimeSeriesCreateFunc(struct CommonExampleOptions& options);
+
+
+
+#endif//TIME_SERIES_EXAMPLE_H