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Overview ¶
Copyright 2011 The draw2d Authors. All rights reserved. created: 27/05/2011 by Laurent Le Goff
Index ¶
Constants ¶
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const ( SUBPIXEL_SHIFT = 3 SUBPIXEL_COUNT = 1 << SUBPIXEL_SHIFT )
Variables ¶
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var SUBPIXEL_OFFSETS = SUBPIXEL_OFFSETS_SAMPLE_8
Functions ¶
This section is empty.
Types ¶
type NON_ZERO_MASK_DATA_UNIT ¶
type NON_ZERO_MASK_DATA_UNIT uint8
type Rasterizer8BitsSample ¶
type Rasterizer8BitsSample struct {
MaskBuffer []SUBPIXEL_DATA
WindingBuffer []NON_ZERO_MASK_DATA_UNIT
Width int
BufferWidth int
Height int
ClipBound [4]float64
RemappingMatrix [6]float64
}
func NewRasterizer8BitsSample ¶
func NewRasterizer8BitsSample(width, height int) *Rasterizer8BitsSample
width and height define the maximum output size for the filler.
* The filler will output to larger bitmaps as well, but the output will * be cropped.
func (*Rasterizer8BitsSample) RenderEvenOdd ¶
func (*Rasterizer8BitsSample) RenderNonZeroWinding ¶
func (r *Rasterizer8BitsSample) RenderNonZeroWinding(img *image.RGBA, color *color.RGBA, polygon *Polygon, tr [6]float64)
* Renders the polygon with non-zero winding fill. * param aTarget the target bitmap. * param aPolygon the polygon to render. * param aColor the color to be used for rendering. * param aTransformation the transformation matrix.
type SUBPIXEL_DATA ¶
type SUBPIXEL_DATA uint16
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