VectorCanvas¶

Overview¶

Similar to an DOM Canvas, but stores a vector representation of the relevant drawing commands.

TODO TODO: This should be done instead in the rational-half-edge space, so we get better exactness on the repeated TODO: CAG. What is causing the issues?

TODO: We really would want to "cache" all of the commands at once, build up a "pending" RenderProgram, and then TODO: handle all the paths at once.

@author Jonathan Olson <jonathan.olson@colorado.edu>

Class VectorCanvas¶

import { VectorCanvas } from 'scenerystack/alpenglow';

Constructor¶

new VectorCanvas( width : number, height : number, colorSpace : 'srgb' | 'display-p3', polygonFiltering : PolygonFilterType )¶

Instance Methods¶

fillColor( renderPath : RenderPath, color : Vector4 )¶

Assumes sRGB? We'll do srgb-linear blending to mimic for now?

fillLinearGradient( renderPath : RenderPath, start : Vector2, end : Vector2, stops : { ratio: number; color: Vector4 }[], extend : RenderExtend, accuracy : RenderLinearGradientAccuracy )¶

fillRadialGradient( renderPath : RenderPath, transform : Matrix3, start : Vector2, startRadius : number, end : Vector2, endRadius : number, stops : { ratio: number; color: Vector4 }[], extend : RenderExtend, accuracy : RenderRadialGradientAccuracy )¶

copy() : VectorCanvas¶

updateWidthHeight( width : number, height : number )¶

getImageData( options? : CombinedRasterOptions ) : ImageData¶

getCanvas( options? : CombinedRasterOptions ) : HTMLCanvasElement¶

Instance Properties¶

renderableFaces : RenderableFace[]¶

bounds : Bounds2¶

gridBounds : Bounds2¶

Source Code¶

See the source for VectorCanvas.ts in the alpenglow repository.