//returns the screen coordinates for the maximum of the graph
public Vector2 render(Vector2 graphOrigin, float graphWidth, float graphHeight, float minValue, float maxValue)
{
//Render the floor display
lineMaterial.SetPass(0);
GL.PushMatrix();
GL.LoadOrtho();
float graphXStep=0;
float graphYStep=graphHeight;
if (writeIdx>0)
graphXStep=graphWidth/writeIdx;
GraphUtils.drawArrow2d(graphOrigin,new Vector2(graphOrigin.x,graphOrigin.y+graphHeight),0.02f);
GraphUtils.drawArrow2d(graphOrigin,new Vector2(graphOrigin.x+graphWidth,graphOrigin.y),0.02f);
GL.Begin(GL.LINES);
Vector2 previous=new Vector2();
Vector2 result=new Vector2(-float.MaxValue,-float.MaxValue);
for (int i=0; i<writeIdx; i++)
{
float val=buffer[i];
val=val-minValue;
val=val/(maxValue-minValue);
Vector2 current=new Vector2(graphOrigin.x+graphXStep*(float)i,graphOrigin.y+graphYStep*val);
if (current.y > result.y)
result=current;
if (i!=0){
GL.Vertex(previous);
GL.Vertex(current);
}
previous=current;
}
GL.End();
GL.PopMatrix();
return result;
}
//call this from OnRenderObject of some other object
public void renderRunning(Vector2 graphOrigin, float graphWidth, float graphHeight, float minValue, float maxValue)
{
//Render the floor display
lineMaterial.SetPass(0);
GL.PushMatrix();
GL.LoadOrtho();
float graphXStep=0;
float graphYStep=graphHeight;
if (buffer.Capacity>0)
graphXStep=graphWidth/buffer.Capacity;
GraphUtils.drawArrow2d(graphOrigin,new Vector2(graphOrigin.x,graphOrigin.y+graphHeight),0.02f);
GraphUtils.drawArrow2d(graphOrigin,new Vector2(graphOrigin.x+graphWidth,graphOrigin.y),0.02f);
GL.Begin(GL.LINES);
Vector2 previous=new Vector2();
for (int i=0; i<buffer.Capacity; i++)
{
int delay=buffer.Capacity-i;
int idx=writeIdx-delay;
if (idx<0)
idx+=buffer.Capacity;
float val=buffer[idx];
val=val-minValue;
val=val/(maxValue-minValue);
Vector2 current=new Vector2(graphOrigin.x+graphXStep*(float)i,graphOrigin.y+graphYStep*val);
if (i!=0){
GL.Vertex(previous);
GL.Vertex(current);
}
previous=current;
}
GL.End();
GL.PopMatrix();
}
