drawing

Documentation

Overview

Package drawing abstracts away some of the draw2d complexities by being opinionated on how to do some tasks (like saving only png)

Index

• func DrawLine(xo, yo, xe, ye float32, path *CanvasContext)
• func DrawPoint(x, y float32, path *CanvasContext)
• func DrawSquare(xo, yo, xe, ye float32, path *CanvasContext)
• type Canvas
  • func NewCanvas(size int, fileName string) *Canvas
  • func (c *Canvas) GetContext() *CanvasContext
  • func (c *Canvas) Save()
• type CanvasContext
  • func (cnv CanvasContext) ToScale(x float32) float64
• type Drawable

Functions

func DrawLine

func DrawLine(xo, yo, xe, ye float32, path *CanvasContext)

DrawLine from (xo, yo) to (xe, ye)

func DrawPoint

func DrawPoint(x, y float32, path *CanvasContext)

Drawpoint will draw a point into the canvas

func DrawSquare

func DrawSquare(xo, yo, xe, ye float32, path *CanvasContext)

DrawSquare will get a canvascontext and draw an empty square

Types

type Canvas

type Canvas struct {
	image.RGBA
	// contains filtered or unexported fields
}

func NewCanvas

func NewCanvas(size int, fileName string) *Canvas

NewCanvas initialize the canvas

func (*Canvas) GetContext

func (c *Canvas) GetContext() *CanvasContext

Get a new Graphic Context where to draw

func (*Canvas) Save

func (c *Canvas) Save()

Save the contexts into a final image

type CanvasContext

type CanvasContext struct {
	draw2dimg.GraphicContext
	// contains filtered or unexported fields
}

func (CanvasContext) ToScale

func (cnv CanvasContext) ToScale(x float32) float64

ToScale transforms the [0.0, 1.0) space into [0, canvas.size)

type Drawable

type Drawable interface {
	Draw(canvas *Canvas)
}