Here’s an old piece of mine
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create new widget
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set up a bunch of variables :
- GraphPoints : array of Vector2D to store X,Y points
- Duration : the amount of time shown on graph (eg. show velocity graph of past 5 seconds)
- MaxFps : the maximum sampling rate (eg. 10 points per second, multiplied by 5 seconds = 50 lines to draw, keep performance in mind)
- Width, Height : size of graph (eg. 400 x 200)
- MaxSpeed : size of the Y axis (eg. 1500)
- LastIndex, FVel : just some local cache variables
Initialize all the points at the bottom-right-most end of graph, and start timer
On timer get current velocity and update the graph points
Then override the OnPaint function for your widget to draw lines
