// Draw a left hand and ear of a gopher using a gc thanks to
// https://github.com/golang-samples/gopher-vector/
func Draw(gc draw2d.GraphicContext) {
// Initialize Stroke Attribute
gc.SetLineWidth(3)
gc.SetLineCap(draw2d.RoundCap)
gc.SetStrokeColor(color.Black)
// Left hand
// <path fill-rule="evenodd" clip-rule="evenodd" fill="#F6D2A2" stroke="#000000" stroke-width="3" stroke-linecap="round" d="
// M10.634,300.493c0.764,15.751,16.499,8.463,23.626,3.539c6.765-4.675,8.743-0.789,9.337-10.015
// c0.389-6.064,1.088-12.128,0.744-18.216c-10.23-0.927-21.357,1.509-29.744,7.602C10.277,286.542,2.177,296.561,10.634,300.493"/>
gc.SetFillColor(color.RGBA{0xF6, 0xD2, 0xA2, 0xff})
gc.MoveTo(10.634, 300.493)
rCubicCurveTo(gc, 0.764, 15.751, 16.499, 8.463, 23.626, 3.539)
rCubicCurveTo(gc, 6.765, -4.675, 8.743, -0.789, 9.337, -10.015)
rCubicCurveTo(gc, 0.389, -6.064, 1.088, -12.128, 0.744, -18.216)
rCubicCurveTo(gc, -10.23, -0.927, -21.357, 1.509, -29.744, 7.602)
gc.CubicCurveTo(10.277, 286.542, 2.177, 296.561, 10.634, 300.493)
gc.FillStroke()
// <path fill-rule="evenodd" clip-rule="evenodd" fill="#C6B198" stroke="#000000" stroke-width="3" stroke-linecap="round" d="
// M10.634,300.493c2.29-0.852,4.717-1.457,6.271-3.528"/>
gc.MoveTo(10.634, 300.493)
rCubicCurveTo(gc, 2.29, -0.852, 4.717, -1.457, 6.271, -3.528)
gc.Stroke()
// Left Ear
// <path fill-rule="evenodd" clip-rule="evenodd" fill="#6AD7E5" stroke="#000000" stroke-width="3" stroke-linecap="round" d="
// M46.997,112.853C-13.3,95.897,31.536,19.189,79.956,50.74L46.997,112.853z"/>
gc.MoveTo(46.997, 112.853)
gc.CubicCurveTo(-13.3, 95.897, 31.536, 19.189, 79.956, 50.74)
gc.LineTo(46.997, 112.853)
gc.Close()
gc.Stroke()
}
// Dash draws a line with a dash pattern
func Dash(gc draw2d.GraphicContext, x, y, width, height float64) {
sx, sy := width/162, height/205
gc.SetStrokeColor(image.Black)
gc.SetLineDash([]float64{height / 10, height / 50, height / 50, height / 50}, -50.0)
gc.SetLineCap(draw2d.ButtCap)
gc.SetLineJoin(draw2d.RoundJoin)
gc.SetLineWidth(height / 50)
gc.MoveTo(x+sx*60.0, y)
gc.LineTo(x+sx*60.0, y)
gc.LineTo(x+sx*162, y+sy*205)
rLineTo(gc, sx*-102.4, 0)
gc.CubicCurveTo(x+sx*-17, y+sy*205, x+sx*-17, y+sy*103, x+sx*60.0, y+sy*103.0)
gc.Stroke()
gc.SetLineDash(nil, 0.0)
}
// FillStroke first fills and afterwards strokes a path.
func FillStroke(gc draw2d.GraphicContext, x, y, width, height float64) {
sx, sy := width/210, height/215
gc.MoveTo(x+sx*113.0, y)
gc.LineTo(x+sx*215.0, y+sy*215)
rLineTo(gc, sx*-100, 0)
gc.CubicCurveTo(x+sx*35, y+sy*215, x+sx*35, y+sy*113, x+sx*113.0, y+sy*113)
gc.Close()
gc.MoveTo(x+sx*50.0, y)
rLineTo(gc, sx*51.2, sy*51.2)
rLineTo(gc, sx*-51.2, sy*51.2)
rLineTo(gc, sx*-51.2, sy*-51.2)
gc.Close()
gc.SetLineWidth(width / 20.0)
gc.SetFillColor(color.NRGBA{0, 0, 0xFF, 0xFF})
gc.SetStrokeColor(image.Black)
gc.FillStroke()
}
// CubicCurve draws a cubic curve with its control points.
func CubicCurve(gc draw2d.GraphicContext, x, y, width, height float64) {
sx, sy := width/162, height/205
x0, y0 := x, y+sy*100.0
x1, y1 := x+sx*75, y+sy*205
x2, y2 := x+sx*125, y
x3, y3 := x+sx*205, y+sy*100
gc.SetStrokeColor(image.Black)
gc.SetFillColor(color.NRGBA{0xAA, 0xAA, 0xAA, 0xFF})
gc.SetLineWidth(width / 10)
gc.MoveTo(x0, y0)
gc.CubicCurveTo(x1, y1, x2, y2, x3, y3)
gc.Stroke()
gc.SetStrokeColor(color.NRGBA{0xFF, 0x33, 0x33, 0x88})
gc.SetLineWidth(width / 20)
// draw segment of curve
gc.MoveTo(x0, y0)
gc.LineTo(x1, y1)
gc.LineTo(x2, y2)
gc.LineTo(x3, y3)
gc.Stroke()
}
// Draw a gopher head (not rotated)
func Draw(gc draw2d.GraphicContext, x, y, w, h float64) {
h23 := (h * 2) / 3
blf := color.RGBA{0, 0, 0, 0xff} // black
wf := color.RGBA{0xff, 0xff, 0xff, 0xff} // white
nf := color.RGBA{0x8B, 0x45, 0x13, 0xff} // brown opaque
brf := color.RGBA{0x8B, 0x45, 0x13, 0x99} // brown transparant
brb := color.RGBA{0x8B, 0x45, 0x13, 0xBB} // brown transparant
// round head top
gc.MoveTo(x, y+h*1.002)
gc.CubicCurveTo(x+w/4, y-h/3, x+3*w/4, y-h/3, x+w, y+h*1.002)
gc.Close()
gc.SetFillColor(brb)
gc.Fill()
// rectangle head bottom
draw2dkit.RoundedRectangle(gc, x, y+h, x+w, y+h+h, h/5, h/5)
gc.Fill()
// left ear outside
draw2dkit.Circle(gc, x, y+h, w/12)
gc.SetFillColor(brf)
gc.Fill()
// left ear inside
draw2dkit.Circle(gc, x, y+h, 0.5*w/12)
gc.SetFillColor(nf)
gc.Fill()
// right ear outside
draw2dkit.Circle(gc, x+w, y+h, w/12)
gc.SetFillColor(brf)
gc.Fill()
// right ear inside
draw2dkit.Circle(gc, x+w, y+h, 0.5*w/12)
gc.SetFillColor(nf)
gc.Fill()
// left eye outside white
draw2dkit.Circle(gc, x+w/3, y+h23, w/9)
gc.SetFillColor(wf)
gc.Fill()
// left eye black
draw2dkit.Circle(gc, x+w/3+w/24, y+h23, 0.5*w/9)
gc.SetFillColor(blf)
gc.Fill()
// left eye inside white
draw2dkit.Circle(gc, x+w/3+w/24+w/48, y+h23, 0.2*w/9)
gc.SetFillColor(wf)
gc.Fill()
// right eye outside white
draw2dkit.Circle(gc, x+w-w/3, y+h23, w/9)
gc.Fill()
// right eye black
draw2dkit.Circle(gc, x+w-w/3+w/24, y+h23, 0.5*w/9)
gc.SetFillColor(blf)
gc.Fill()
// right eye inside white
draw2dkit.Circle(gc, x+w-(w/3)+w/24+w/48, y+h23, 0.2*w/9)
gc.SetFillColor(wf)
gc.Fill()
// left tooth
gc.SetFillColor(wf)
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)
gc.Fill()
// right tooth
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)
gc.Fill()
// snout
draw2dkit.Ellipse(gc, x+(w/2), y+h+h/2.5, w/6, w/12)
gc.SetFillColor(nf)
gc.Fill()
// nose
draw2dkit.Ellipse(gc, x+(w/2), y+h+h/7, w/10, w/12)
gc.SetFillColor(blf)
gc.Fill()
}
// CurveRectangle draws a rectangle with bezier curves (not rounded rectangle).
func CurveRectangle(gc draw2d.GraphicContext, x0, y0,
rectWidth, rectHeight float64, stroke, fill color.Color) {
radius := (rectWidth + rectHeight) / 4
x1 := x0 + rectWidth
y1 := y0 + rectHeight
if rectWidth/2 < radius {
if rectHeight/2 < radius {
gc.MoveTo(x0, (y0+y1)/2)
gc.CubicCurveTo(x0, y0, x0, y0, (x0+x1)/2, y0)
gc.CubicCurveTo(x1, y0, x1, y0, x1, (y0+y1)/2)
gc.CubicCurveTo(x1, y1, x1, y1, (x1+x0)/2, y1)
gc.CubicCurveTo(x0, y1, x0, y1, x0, (y0+y1)/2)
} else {
gc.MoveTo(x0, y0+radius)
gc.CubicCurveTo(x0, y0, x0, y0, (x0+x1)/2, y0)
gc.CubicCurveTo(x1, y0, x1, y0, x1, y0+radius)
gc.LineTo(x1, y1-radius)
gc.CubicCurveTo(x1, y1, x1, y1, (x1+x0)/2, y1)
gc.CubicCurveTo(x0, y1, x0, y1, x0, y1-radius)
}
} else {
if rectHeight/2 < radius {
gc.MoveTo(x0, (y0+y1)/2)
gc.CubicCurveTo(x0, y0, x0, y0, x0+radius, y0)
gc.LineTo(x1-radius, y0)
gc.CubicCurveTo(x1, y0, x1, y0, x1, (y0+y1)/2)
gc.CubicCurveTo(x1, y1, x1, y1, x1-radius, y1)
gc.LineTo(x0+radius, y1)
gc.CubicCurveTo(x0, y1, x0, y1, x0, (y0+y1)/2)
} else {
gc.MoveTo(x0, y0+radius)
gc.CubicCurveTo(x0, y0, x0, y0, x0+radius, y0)
gc.LineTo(x1-radius, y0)
gc.CubicCurveTo(x1, y0, x1, y0, x1, y0+radius)
gc.LineTo(x1, y1-radius)
gc.CubicCurveTo(x1, y1, x1, y1, x1-radius, y1)
gc.LineTo(x0+radius, y1)
gc.CubicCurveTo(x0, y1, x0, y1, x0, y1-radius)
}
}
gc.Close()
gc.SetStrokeColor(stroke)
gc.SetFillColor(fill)
gc.SetLineWidth(10.0)
gc.FillStroke()
}