123 lines
2.9 KiB
Go
123 lines
2.9 KiB
Go
// Copyright 2010 The draw2d Authors. All rights reserved.
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// created: 21/11/2010 by Laurent Le Goff
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// Package gopher2 draws a gopher avatar based on a svg of:
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// https://github.com/golang-samples/gopher-vector/
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package gopher2
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import (
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"image"
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"image/color"
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"math"
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"github.com/llgcode/draw2d"
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"github.com/llgcode/draw2d/draw2dkit"
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"github.com/llgcode/draw2d/samples"
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)
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// Main draws a rotated face of the gopher. Afterwards it returns
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// the filename. This should only be used during testing.
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func Main(gc draw2d.GraphicContext, ext string) (string, error) {
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gc.SetStrokeColor(image.Black)
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gc.SetFillColor(image.White)
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gc.Save()
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// Draw a (partial) gopher
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gc.Translate(-60, 65)
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gc.Rotate(-30 * (math.Pi / 180.0))
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Draw(gc, 48, 48, 240, 72)
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gc.Restore()
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// Return the output filename
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return samples.Output("gopher2", ext), nil
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}
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// Draw a gopher head (not rotated)
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func Draw(gc draw2d.GraphicContext, x, y, w, h float64) {
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h23 := (h * 2) / 3
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blf := color.RGBA{0, 0, 0, 0xff} // black
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wf := color.RGBA{0xff, 0xff, 0xff, 0xff} // white
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nf := color.RGBA{0x8B, 0x45, 0x13, 0xff} // brown opaque
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brf := color.RGBA{0x8B, 0x45, 0x13, 0x99} // brown transparant
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brb := color.RGBA{0x8B, 0x45, 0x13, 0xBB} // brown transparant
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// round head top
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gc.MoveTo(x, y+h*1.002)
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gc.CubicCurveTo(x+w/4, y-h/3, x+3*w/4, y-h/3, x+w, y+h*1.002)
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gc.Close()
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gc.SetFillColor(brb)
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gc.Fill()
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// rectangle head bottom
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draw2dkit.RoundedRectangle(gc, x, y+h, x+w, y+h+h, h/5, h/5)
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gc.Fill()
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// left ear outside
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draw2dkit.Circle(gc, x, y+h, w/12)
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gc.SetFillColor(brf)
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gc.Fill()
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// left ear inside
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draw2dkit.Circle(gc, x, y+h, 0.5*w/12)
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gc.SetFillColor(nf)
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gc.Fill()
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// right ear outside
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draw2dkit.Circle(gc, x+w, y+h, w/12)
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gc.SetFillColor(brf)
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gc.Fill()
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// right ear inside
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draw2dkit.Circle(gc, x+w, y+h, 0.5*w/12)
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gc.SetFillColor(nf)
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gc.Fill()
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// left eye outside white
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draw2dkit.Circle(gc, x+w/3, y+h23, w/9)
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gc.SetFillColor(wf)
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gc.Fill()
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// left eye black
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draw2dkit.Circle(gc, x+w/3+w/24, y+h23, 0.5*w/9)
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gc.SetFillColor(blf)
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gc.Fill()
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// left eye inside white
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draw2dkit.Circle(gc, x+w/3+w/24+w/48, y+h23, 0.2*w/9)
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gc.SetFillColor(wf)
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gc.Fill()
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// right eye outside white
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draw2dkit.Circle(gc, x+w-w/3, y+h23, w/9)
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gc.Fill()
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// right eye black
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draw2dkit.Circle(gc, x+w-w/3+w/24, y+h23, 0.5*w/9)
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gc.SetFillColor(blf)
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gc.Fill()
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// right eye inside white
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draw2dkit.Circle(gc, x+w-(w/3)+w/24+w/48, y+h23, 0.2*w/9)
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gc.SetFillColor(wf)
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gc.Fill()
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// left tooth
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gc.SetFillColor(wf)
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draw2dkit.RoundedRectangle(gc, x+w/2-w/8, y+h+h/2.5, x+w/2-w/8+w/8, y+h+h/2.5+w/6, w/10, w/10)
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gc.Fill()
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// right tooth
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draw2dkit.RoundedRectangle(gc, x+w/2, y+h+h/2.5, x+w/2+w/8, y+h+h/2.5+w/6, w/10, w/10)
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gc.Fill()
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// snout
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draw2dkit.Ellipse(gc, x+(w/2), y+h+h/2.5, w/6, w/12)
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gc.SetFillColor(nf)
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gc.Fill()
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// nose
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draw2dkit.Ellipse(gc, x+(w/2), y+h+h/7, w/10, w/12)
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gc.SetFillColor(blf)
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gc.Fill()
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}
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