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Hello there guys,

It's been years since I stopped using RMXP, but with mkxp-z I revived some old projects and I'm back developing stuff.

However I got stuck with some old methods from MACL (do you guys still remember that?)

I'm having some trouble using the Bitmap's method "draw_polygon":

Code:
#-------------------------------------------------------------------------

  # * Name      : Draw Polygon

  #   Info      : Draws a Polygon 

  #   Author    : Caesar (Rewrote By Trickster)

  #   Call Info : Array vertices - Points of the polygon

  #               Integer width - Thickness of the lines

  #               Color color - color to draw it in

  #               Boolean filled - false outline true filled

  #               Integer step - fill steps

  #   Comments  : Example of vertices setup [[30, 80], [80, 80], [30, 60]]

  #-------------------------------------------------------------------------

  def draw_polygon(vertices, stroke = 1, color = Color.new(255, 255, 255),

    filled = false, step = 1)

    # Return if no width or not enough points

    return if stroke <= 0 or vertices.size <= 2

    # Get Count

    count = vertices.size

    # Get Points

    x1, y1, x2, y2 = vertices[-1] + vertices[0]

    # Draw Line

    draw_line(x1, y1, x2, y2, stroke, color)

    # Shade if filled

    shade_section(cx, cy, x1, y1, x2, y2, stroke, step, color) if filled

    # Run Through with next

    vertices.each_with_next do |start, point|

      # Get Points

      x1, y1, x2, y2 = start + point

      # Draw Line

      draw_line(x1, y1, x2, y2, stroke, color)

      # Shade if filled

      shade_section(cx, cy, x1, y1, x2, y2, stroke, step, color) if filled

    end

  end

It works just fine, unless I mark the filled boolean as true. It causes some problem to me since cx and cy doesn't seem to exist in the method "shade_section". I tried to fix it, but I couldn't manage to solve it so far. Check the method shade_section below:

Code:
 #-------------------------------------------------------------------------

  # * Name      : Shade Section

  #   Info      : Shades a section from (cx,cy), (x1,y1), (x2,y2)

  #   Author    : Trickster

  #   Call Info : Six to Nine Arguments

  #               Integer cx, cy, x1, y1, x2, y2 - Points

  #               Integer Thick - Line Thickness

  #               Integer Step - how many lines to draw (lower = higher accuracy)

  #               Color color - color to shade in

  #-------------------------------------------------------------------------

  def shade_section(cx, cy, x1, y1, x2, y2, thick = 1, step = 1, 

      color = Color.new(255, 255, 255))

    # Reverse all parameters sent if 2 x is less than the first x

    x1, x2, y1, y2 = x2, x1, y2, y1 if x2 < x1    

    # Get Slope

    slope = (y2 - y1).to_f / (x2 - x1)

    # If Slope is infinite

    if slope.infinite?

      y1.step(y2, step) {|y| draw_line(cx, cy, x1, y, thick, color)}

    # If Slope is zero

    elsif slope.zero?

      x1.step(x2, step) {|x| draw_line(cx, cy, x, y1, thick, color)}

    elsif not slope.nan?

      # Get Y intercept

      yint = y1 - slope * x1

      x1.step(x2, step) {|x| draw_line(cx, cy, x, slope * x + yint, thick, color)}

    end

  end

end

Any help would be appreciated. I just wanna draw color filled polygons :(
If you guys may need MACL, I'll attach the version I currently got. Thanks in advance!

Yes, the issue is the shade selection method. I do not see any sign where the cx and cy values are even generated. Without those, the shade_selection feature is moot.

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Megalukes

DerVVulfman