orx-composition
Shape composition library
One can think of a Composition as a vector design made out of primitives like ShapeContour, Shape, or LineSegment, each having its fill color, stroke color and stroke weight.
Compositions can be loaded from SVG files and then queried or altered via code.
Composition can also be generated from scratch, typically using drawComposition { ... }, then saved as an SVG file.
Read about Composition in the guide.
The code in orx-composition was previously found under openrndr-draw in the openrndr repository.
Demos
DemoCompositionDrawer01
Demonstrates how to
- Create a Composition
- Draw it on the program window
- Save it to an SVG file
- Print the SVG content as text
DemoCompositionDrawer02
Demonstrates how to draw a Composition and how to use
ClipMode.REVERSE_DIFFERENCE to clip shapes.
The first shape clips part of the second one away, producing a shape that seems to be behind the first one.
Without clipping, the second circle would cover part of the first one.
DemoCompositionDrawer03
Draws a composition using 3 circles and ClipMode.REVERSE_DIFFERENCE.
A println() demonstrates that the result contains 3 shapes: a complete circle, a moon-like shape, and a shape with two small black areas.
One way to verify this is by saving the design as an SVG file and opening it in vector editing software.
DemoCompositionDrawer04
Demonstrates how to add content to and how to clear an existing Composition.
A number of circles are added when the program starts.
Dragging the mouse button adds more circles.
Right-clicking the mouse clears the Composition.
DemoCompositionDrawer05
Demonstrates how to
- Create a Composition with a group
- Add XML attributes so the group appears as a layer in Inkscape
