svgg

package module

v0.0.0-...-2e7b110 Latest Latest Go to latest Published: Apr 15, 2021 License: BSD-3-Clause Imports: 6 Imported by: 1

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/engelsjk/svgg

Links

Open Source Insights

README ¶

svgg

svgg is an automated SVG path string parser and rendering tool. It is based on the package srwiley/oksvg but modified to draw directly to an SVG context using the fogleman/gg rendering engine.

Warning: This is a work in progress. Only M line commands are currently implemented.

Installation

go get github.com/engelsjk/svgg

Usage

Note: svgg does not include an SVG/XML parser, so you'll need a way to first extract a path string.


dc := gg.NewContext(150, 200)

parser := svgg.NewParser(dc)

dpath := "M75 0, 0 200, 150 200 Z"

parser.CompilePath(dpath)

dc.SetRGB(0, 0, 0)
dc.Fill()

dc.SavePNG("image.png")

Documentation ¶

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type ErrorMode ¶

type ErrorMode uint8

ErrorMode sets how the parser reacts to unparsed elements

const (
	//IgnoreErrorMode skips unparsed SVG elements
	IgnoreErrorMode ErrorMode = iota
	//WarnErrorMode outputs a warning when an unparsed SVG element is found
	WarnErrorMode
	//StrictErrorMode causes a error when an unparsed SVG element is found
	StrictErrorMode
)

type Parser ¶

type Parser struct {
	ErrorMode ErrorMode
	// contains filtered or unexported fields
}

Parser is used to parse SVG strings into drawing commands

func NewParser ¶

func NewParser(dc *gg.Context) *Parser

func (*Parser) AddArcFromA ¶

func (p *Parser) AddArcFromA(points []float64)

AddArcFromA adds a path of an arc element to the Parser

func (*Parser) CompilePath ¶

func (p *Parser) CompilePath(svgPath string) error

CompilePath translates the svgPath description string and draws to the context. All valid SVG path elements are interpreted to fogleman/gg drawing commands.

func (*Parser) EllipseAt ¶

func (p *Parser) EllipseAt(cx, cy, rx, ry float64)

EllipseAt adds a path of an elipse centered at cx, cy of radius rx and ry to the Parser

func (*Parser) GetPoints ¶

func (p *Parser) GetPoints(dataPoints string) error

GetPoints reads a set of floating point values from the SVG format number string, and add them to the cursor's points slice.

func (*Parser) ReadFloat ¶

func (p *Parser) ReadFloat(numStr string) error

ReadFloat reads a floating point value and adds it to the cursor's points slice.

Source Files ¶

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