Points in Line

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  16 years ago

  by Nimpo

  Mitch ★

  Denver, United States

  Joined 16 years ago

  Does anyone know how to get an array of points that is calculated in the graphics.drawline?  You give it 2 points, and it calculates every point that will be on this line and draws the line with the specific color and thickness.  I need those individual points that it calculates.
  

  
  Just in case anyone is wondering, the reason I need to have this array is because, in my program, I am offering a brush tool to paint with.  The drawing code is called on the mousemove of a picturebox.  As you may know, the mousemove event isnt raised for every pixel movement of the mouse if the mouse is drug fast.  
  

  
  My current fix for this is to draw a line with the thickness of the brush tool from the last point to the current point, this works fine for a solid color brush (with a little fix).  The problem is that I also have the option to add a hatch or gradient fill to the brush.  you cant draw a line with a hatch or gradient style.  so for example if the brush style is a 10x10 square, with the hatch mode selected, it wont be a continuous "line of hatch pattern" if the mouse is drug fast, but a series of broken squares that are placed wherever the mouse happens to be when the mousemove event is finally fired.  I plan to loop through this array of points and draw the hatch filled square centered over each point.
  

  
  If I havent made myself clear enough, open up MS Paint, selectet the brush tool, and draw a line really fast.  You should see a bunch of connected straight lines with a change in direction whenever the mousemove event is raised even if you drug the mouse in a curve pattern.  That is because the mosuemove event isnt fired every pixel the mouse is moved.  I think MS paint use my same method for fixing this by drawing lines (not filling rctangles) as i did.  But what am i supposed to do with gradients and hatches?

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