System.Drawing support?

Trinith · December 1, 2020, 3:34pm

Sorry, I guess I should have been more specific. If you’re creating a Windows project you can pull in any .NET dll you like and use it. The data types, like RectangleF, will work just fine; however, the drawing routines (ie, Graphics.DrawLine won’t, because they use GDI+ rendering and require you to create a Graphics object that, ultimately, draws to an HDC object… I think. It’s been a long time since I’ve looked under the hood of GDI+. Anyway, it’s a different drawing system than MonoGame uses.

You might be able to get the window context of the MonoGame window and use System.Drawing to draw over top of your MonoGame stuff, but it’s not ideal. It’s easier to just use a SpriteBatch and draw your primitives that way.

I thought it was rolled into MonoGame.Extended, I seem to recall doing it there, but it looks like @craftworkgames refactored it to support 3d drawing techniques using the vertex buffer… yea? I swear you had the SpriteBatch Primitives2D stuff in there at one point, but maybe I’m wrong
(*EDIT: Oh, I found this from a few years ago, yea they reworked it! Vector-based grphics - is Monogame the way to go?)

Anyway, the original project repository looks like it’s dead. Best I could find is a link to the page my buddy had put up on his personal space…

However, it does look like many folks have been keeping copies of it around. Here’s a link to one that’s probably better maintained…

github.com

DoogeJ/MonoGame.Primitives2D/blob/master/Primitives2D.cs

using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace MonoGame
{
    public static class Primitives2D
    {

        #region Private Members

        private static readonly Dictionary<String, List<Vector2>> circleCache = new Dictionary<string, List<Vector2>>();
        //private static readonly Dictionary<String, List<Vector2>> arcCache = new Dictionary<string, List<Vector2>>();
        private static Texture2D pixel;

        #endregion


        #region Private Methods

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I took a copy of this maybe a month ago actually, when needed debug drawing for the font scaling prototype I worked on. It was easier than digging through my own source folders where there’s like 5 iterations of this damn thing floating around haha.