[Math] RemapValue

[coconParticipant]

This is a very important and useful function that will allow you to remap a value from the source range to the target range.

Some examples of using would be for converting float values 0..1 to bytes, or when dealind with joystick input -1..1 to a game value n..n, etc.

 

Monkey

#Import "<mojo>" Using mojo.. Using std.graphics #rem monkeydoc Remaps a value from the source range to the target range. The first range is the initial value range. The second range is the target value range. @param firstStart The start value of the first range. @param firstStop The stop value of the first range. @param secondStart The start value of the second range. @param secondStop The stop value of the second range. @return value remapped to the target value range of [secondStart, secondStop]. #end Function Remap:Float(value:Float, firstStart:Float, firstStop:Float, secondStart:Float, secondStop:Float) Return secondStart + (secondStop - secondStart) * ((value - firstStart) / (firstStop - firstStart)) End Class MyWindow Extends Window Method OnRender(canvas:Canvas) Override Local position := Remap(Mouse.X, 0, Width, 100, 400) Local rotation := Remap(Mouse.X, 0, Width, 0, Pi/2) Local color := Remap(Mouse.X, 0, Width, 1, 0) App.RequestRender() canvas.Clear(Color.Black) canvas.Color = Color.White canvas.DrawText("Input Value:" + Mouse.X, 0, 15*1, 0, 0.5) canvas.DrawText("Position:" + position, 0, 15*2, 0, 0.5) canvas.DrawText("Rotation:" + rotation, 0, 15*3, 0, 0.5) canvas.DrawText("Color:" + color, 0, 15*4, 0, 0.5) canvas.PushMatrix() canvas.Translate(position, position) canvas.Rotate(rotation) canvas.Color = New Color(1, color, color) canvas.DrawRect(0, -0.5, 100, 100) canvas.PopMatrix() End End Function Main() New AppInstance New MyWindow App.Run() End

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#Import "<mojo>"   Using mojo.. Using std.graphics   #rem monkeydoc Remaps a value from the source range to the target range.   The first range is the initial value range. The second range is the target value range.   @param firstStart The start value of the first range. @param firstStop The stop value of the first range. @param secondStart The start value of the second range. @param secondStop The stop value of the second range.   @return value remapped to the target value range of [secondStart, secondStop].   #end Function Remap:Float(value:Float, firstStart:Float, firstStop:Float, secondStart:Float, secondStop:Float) Return secondStart + (secondStop - secondStart) * ((value - firstStart) / (firstStop - firstStart)) End   Class MyWindow Extends Window Method OnRender(canvas:Canvas) Override Local position := Remap(Mouse.X, 0, Width, 100, 400) Local rotation := Remap(Mouse.X, 0, Width, 0, Pi/2) Local color := Remap(Mouse.X, 0, Width, 1, 0) App.RequestRender() canvas.Clear(Color.Black) canvas.Color = Color.White canvas.DrawText("Input Value:" + Mouse.X, 0, 15*1, 0, 0.5) canvas.DrawText("Position:" + position, 0, 15*2, 0, 0.5) canvas.DrawText("Rotation:" + rotation, 0, 15*3, 0, 0.5) canvas.DrawText("Color:" + color, 0, 15*4, 0, 0.5) canvas.PushMatrix() canvas.Translate(position, position) canvas.Rotate(rotation) canvas.Color = New Color(1, color, color) canvas.DrawRect(0, -0.5, 100, 100) canvas.PopMatrix() End End   Function Main() New AppInstance New MyWindow App.Run() End

[nerobotParticipant]

Formatting of the post is broken.

[coconParticipant]

Thanks for mentioning it, I removed the “grave accent” character from doc variables.

(Probably I will have to scroll my posts and fix them all )

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