// Draw the droid on a certain position.
func Draw(gc draw2d.GraphicContext, x, y float64) {
// set the fill and stroke color of the droid
gc.SetFillColor(color.RGBA{0x44, 0xff, 0x44, 0xff})
gc.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff})
// set line properties
gc.SetLineCap(draw2d.RoundCap)
gc.SetLineWidth(5)
// head
gc.MoveTo(x+30, y+70)
gc.ArcTo(x+80, y+70, 50, 50, 180*(math.Pi/180), 180*(math.Pi/180))
gc.Close()
gc.FillStroke()
gc.MoveTo(x+60, y+25)
gc.LineTo(x+50, y+10)
gc.MoveTo(x+100, y+25)
gc.LineTo(x+110, y+10)
gc.Stroke()
// left eye
draw2dkit.Circle(gc, x+60, y+45, 5)
gc.FillStroke()
// right eye
draw2dkit.Circle(gc, x+100, y+45, 5)
gc.FillStroke()
// body
draw2dkit.RoundedRectangle(gc, x+30, y+75, x+30+100, y+75+90, 10, 10)
gc.FillStroke()
draw2dkit.Rectangle(gc, x+30, y+75, x+30+100, y+75+80)
gc.FillStroke()
// left arm
draw2dkit.RoundedRectangle(gc, x+5, y+80, x+5+20, y+80+70, 10, 10)
gc.FillStroke()
// right arm
draw2dkit.RoundedRectangle(gc, x+135, y+80, x+135+20, y+80+70, 10, 10)
gc.FillStroke()
// left leg
draw2dkit.RoundedRectangle(gc, x+50, y+150, x+50+20, y+150+50, 10, 10)
gc.FillStroke()
// right leg
draw2dkit.RoundedRectangle(gc, x+90, y+150, x+90+20, y+150+50, 10, 10)
gc.FillStroke()
}
// Draw the image frame with certain parameters.
func Draw(gc draw2d.GraphicContext, png string,
dw, dh, margin, lineWidth float64) error {
// Draw frame
draw2dkit.RoundedRectangle(gc, lineWidth, lineWidth, dw-lineWidth, dh-lineWidth, 100, 100)
gc.SetLineWidth(lineWidth)
gc.FillStroke()
// load the source image
source, err := draw2dimg.LoadFromPngFile(png)
if err != nil {
return err
}
// Size of source image
sw, sh := float64(source.Bounds().Dx()), float64(source.Bounds().Dy())
// Draw image to fit in the frame
// TODO Seems to have a transform bug here on draw image
scale := math.Min((dw-margin*2)/sw, (dh-margin*2)/sh)
gc.Save()
gc.Translate((dw-sw*scale)/2, (dh-sh*scale)/2)
gc.Scale(scale, scale)
gc.Rotate(0.2)
gc.DrawImage(source)
gc.Restore()
return nil
}
// FillString draws a filled and stroked string.
func FillString(gc draw2d.GraphicContext, x, y, width, height float64) {
sx, sy := width/100, height/100
gc.Save()
gc.SetStrokeColor(image.Black)
gc.SetLineWidth(1)
draw2dkit.RoundedRectangle(gc, x+sx*5, y+sy*5, x+sx*95, y+sy*95, sx*10, sy*10)
gc.FillStroke()
gc.SetFillColor(image.Black)
gc.SetFontSize(height / 6)
gc.Translate(x+sx*6, y+sy*52)
gc.SetFontData(draw2d.FontData{
Name: "luxi",
Family: draw2d.FontFamilyMono,
Style: draw2d.FontStyleBold | draw2d.FontStyleItalic})
w := gc.FillString("Hug")
gc.Translate(w+sx, 0)
left, top, right, bottom := gc.GetStringBounds("cou")
gc.SetStrokeColor(color.NRGBA{255, 0x33, 0x33, 0x80})
draw2dkit.Rectangle(gc, left, top, right, bottom)
gc.SetLineWidth(height / 50)
gc.Stroke()
gc.SetFillColor(color.NRGBA{0x33, 0x33, 0xff, 0xff})
gc.SetStrokeColor(color.NRGBA{0x33, 0x33, 0xff, 0xff})
gc.SetLineWidth(height / 100)
gc.StrokeString("Hug")
gc.Restore()
}
// Draw "Hello World"
func Draw(gc draw2d.GraphicContext, text string) {
// Draw a rounded rectangle using default colors
draw2dkit.RoundedRectangle(gc, 5, 5, 135, 95, 10, 10)
gc.FillStroke()
// Set the font luximbi.ttf
gc.SetFontData(draw2d.FontData{Name: "luxi", Family: draw2d.FontFamilyMono, Style: draw2d.FontStyleBold | draw2d.FontStyleItalic})
// Set the fill text color to black
gc.SetFillColor(image.Black)
gc.SetFontSize(14)
// Display Hello World
gc.FillStringAt("Hello World", 8, 52)
}
func display() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LineWidth(1)
gc := draw2dgl.NewGraphicContext(width, height)
gc.SetFontData(draw2d.FontData{
Name: "luxi",
Family: draw2d.FontFamilyMono,
Style: draw2d.FontStyleBold | draw2d.FontStyleItalic})
gc.BeginPath()
draw2dkit.RoundedRectangle(gc, 200, 200, 600, 600, 100, 100)
gc.SetFillColor(color.RGBA{0, 0, 0, 0xff})
gc.Fill()
gl.Flush() /* Single buffered, so needs a flush. */
}
// 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()
}