How can you create a large collection of shapes in a canvas without using a grid in WPF and also allow for free drawing?

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There are different approaches to creating a large collection of shapes in a canvas without using a grid in WPF and allowing for free drawing. Here are some possible solutions:

1. Use a custom control that manages the shape collection and handles the drawing events. This control can have properties and methods for adding, removing, and manipulating shapes, as well as for handling user input such as mouse events. The custom control can also provide options for free drawing, such as a pen tool, a brush tool, or a selection tool. In this way, the user can draw or edit shapes directly on the canvas without the need for a grid.

2. Use a vector graphics library such as SkiaSharp, which provides a rich set of tools for creating and manipulating shapes, paths, and strokes. SkiaSharp can render vector graphics directly on a canvas or other visual container, without the need for a grid or a predefined layout. SkiaSharp also offers options for free drawing, such as brushes, pens, and filters, as well as for transforming and animating shapes.

3. Use a combination of shapes and paths to create complex figures and patterns directly on the canvas. This approach involves defining the vertices, segments, and curves that make up the shape or figure, and using drawing commands to trace the outline and fill the interior. There are various techniques for creating paths and shapes, such as using path geometries, path brushes, or path animations. This approach allows for great flexibility and creativity in creating complex shapes and effects, but requires more programming skills and attention to detail.

Overall, the key to creating a large collection of shapes in a canvas without using a grid in WPF and allowing for free drawing is to use the right tools and techniques that suit your goals and skills. Experiment with different approaches and see which one works best for your needs.