Olive: Add "Render > Geometric Shapes" effect

[Symbian9]

Add effect for create basic geometric shapes:

• Line (length + width + angle);
• Circle (radius; filled/unfilled + border width);
• Rectangle (height + width; filled/unfilled + border width);
• etc.

[Brimson]

This idea should be shelved until Olive completes its roadmap on how effects get done.

[Simran-B]

SVG as mask would be possible solution, maybe even with animation support?

[Symbian9]

SVG as mask would be possible solution

For SVG support we has anotger request:

• https://github.com/olive-editor/olive/issues/458

But for creating & editing SVG we need external vector editor.

General idea of "Geometric Shapes" is something like 'built-in basic vector editor'.

[Simran-B]

Well, Olive could ship with some pre-made SVGs. But if you want to be able to define e.g. how many edges you want in a star-like shape then SVG wouldn't be the best option perhaps.

[Symbian9]

FTR, what you think about implementing "SVG Native" for this feature?

• https://medium.com/adobetech/svg-native-open-sourcing-svg-native-viewer-988125328a07

...

SVG Native is an upcoming W3C specification and a narrow collection of the most commonly used primitives of SVG. This subset brings vector graphics to native applications and draws resolution independent icons or sharp color fonts like for OpenType-SVG fonts.

...

The subset in SVG Native

The new subset in SVG Native consists of the following categories and elements:

• Shapes: <circle>, <ellipse>, <rect>, <path>, <polygon>, <polyline>, <line>
• Groups: <defs>, <g>
• Information: <desc>, <title>
• Gradients: <linearGradient>, <radialGradient>, <stop>
• Clipping: <clipPath> (with limitations)

...

GitHub repo:

• https://github.com/adobe/svg-native-viewer

[Simran-B]

SVG Native seems like a good candidate for the proposed feature - nothing really fancy is needed here. However, as a user you probably want to tweak the shape inside of Olive, which would have to generate SVG code on the fly then I guess? At least from in my current understanding of SVG Native, it isn't an API for generating SVGs, but rather a parser and rasterizer mainly for UIs.