Getting width and height of gesture?

Question

At a loss to find how to measure mouse/touch input h and w, easy way in C# anyone?

Answer 1

Answer by HarshadK · Apr 11, 2016 at 02:58 PM

A simple, non-optimized psuedo-Code for calculating the width and height of swipe gesture will be:

 Vector2 startPos;
 
 void Update()
 {
     if(touchPhase is start for your touch)
     {
         startPos = current position of touch;
     } else if(touchPhase is end for your touch)
     {
         // This delta variable stores the width and height of touch
         Vector2 delta = Mathf.Abs(currentTouchPos - startPos);
     }
 }

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trurl22 · Apr 11, 2016 at 03:20 PM 0

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That measures the distance from A to B, but I need to account for any shape, say the width of a circle.

trurl22 · Apr 11, 2016 at 04:21 PM 0

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Also getting "cannot convert Vector2 to float" error to this:

 Vector2 startPos;
 void Update() {
     if (Input.Get$$anonymous$$ouseButtonDown(0))
     {
         startPos = new Vector2 (Input.mousePosition.x, Input.mousePosition.y);
     } 
     else if (Input.Get$$anonymous$$ouseButtonUp(0))
     {
         Vector2 delta = $$anonymous$$athf.Abs((new Vector2 (Input.mousePosition.x, Input.mousePosition.y)) - (startPos));
     }
 }

I also tried to get $$anonymous$$imum value for my mousePosition, but it keeps showing current one...

 using System.Linq;
     float [] $$anonymous$$imum= {Input.mousePosition.x};
     Debug.Log ($$anonymous$$imum.$$anonymous$$in());

Any ideas?

HarshadK trurl22 · Apr 12, 2016 at 07:38 AM 0

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For the Vector2 to float error, you actually have to pass x and y separately to $$anonymous$$athf.Abs since it takes a float. So delta line will become:

  Vector2 delta = new Vector2 ($$anonymous$$athf.Abs(Input.mousePosition.x - startPos.x), $$anonymous$$athf.Abs(Input.mousePosition.y - startPos.y));

For the second part, can you explain what you are trying to achieve there?

trurl22 HarshadK · Apr 12, 2016 at 01:20 PM 0

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Thank you, never ceases to amaze how noobish I am. It does only show Start and End distance however. Answered my own question with that 2nd method:

 using System.Linq;     
      private List<float> posx1 = new List<float>();
      private List<float> posx2 = new List<float>();
      void Update(){
         if (Input.Get$$anonymous$$ouseButton(0)){
             posx1.Add(Input.mousePosition.x);
             posx2.Add(Input.mousePosition.x);
         } 
         if (Input.Get$$anonymous$$ouseButtonUp(0)){
                 Debug.Log (posx1.$$anonymous$$in());
                 Debug.Log (posx2.$$anonymous$$ax());
         }
      }

And voila, you have x bounds of gesture, repeat for y.

Getting width and height of gesture?

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