// 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. */ }
//Creates a new engine and populates it with the core functions func LoadGraphics(e *Engine) *Engine { e = add(e, "glfw.Init", NewCode("glfw.Init", 0, func(e *Engine, c *Thingy) *Engine { err := glfw.Init() if err != nil { panic(err) } return e })) e = add(e, "GLFWEVENTLOOP", NewCode("GLFWEVENTLOOP", 1, func(e *Engine, c *Thingy) *Engine { var el1 *Thingy el1, e.dataStack = popStack(e.dataStack) window := el1._structVal.(*glfw.Window) window.MakeContextCurrent() if err := gl.Init(); err != nil { panic(err) } texture = newTexture("square.png") defer gl.DeleteTextures(1, &texture) setupScene() for !window.ShouldClose() { drawScene() window.SwapBuffers() glfw.PollEvents() } return e })) e = add(e, "wg.GetStringBounds", NewCode("wg.GetStringBounds", 0, func(e *Engine, c *Thingy) *Engine { var el1 *Thingy el1, e.dataStack = popStack(e.dataStack) left, top, right, bottom := gc.GetStringBounds(el1.getString()) e.dataStack = append(e.dataStack, NewString(fmt.Sprintf("%v", bottom), c)) e.dataStack = append(e.dataStack, NewString(fmt.Sprintf("%v", right), c)) e.dataStack = append(e.dataStack, NewString(fmt.Sprintf("%v", top), c)) e.dataStack = append(e.dataStack, NewString(fmt.Sprintf("%v", left), c)) return e })) e = add(e, "wg.SetFillColor", NewCode("wg.SetFillColor", 1, func(e *Engine, c *Thingy) *Engine { var el1 *Thingy el1, e.dataStack = popStack(e.dataStack) col := el1._structVal.(color.RGBA) EnsureGC() gc.SetFillColor(col) return e })) e = add(e, "wg.SetStrokeColor", NewCode("wg.SetStrokeColor", 1, func(e *Engine, c *Thingy) *Engine { var el1 *Thingy el1, e.dataStack = popStack(e.dataStack) col := el1._structVal.(color.RGBA) EnsureGC() gc.SetStrokeColor(col) return e })) e = add(e, "wg.CloseAndFill", NewCode("wg.CloseAndFill", 0, func(e *Engine, c *Thingy) *Engine { EnsureGC() gc.Close() gc.FillStroke() return e })) e = add(e, "wg.MoveTo", NewCode("wg.MoveTo", 2, func(e *Engine, c *Thingy) *Engine { var el1, el2 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseFloat(el1.getString(), 32) x2, _ := strconv.ParseFloat(el2.getString(), 32) EnsureGC() gc.MoveTo(float64(x1), float64(x2)) // should always be called first for a new path return e })) e = add(e, "wg.LineTo", NewCode("wg.LineTo", 2, func(e *Engine, c *Thingy) *Engine { var el1, el2 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseFloat(el1.getString(), 32) x2, _ := strconv.ParseFloat(el2.getString(), 32) EnsureGC() gc.LineTo(float64(x1), float64(x2)) // should always be called first for a new path return e })) e = add(e, "wg.RoundedRectangle", NewCode("wg.RoundedRectangle", 2, func(e *Engine, c *Thingy) *Engine { var el1, el2, el3, el4 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) el3, e.dataStack = popStack(e.dataStack) el4, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseFloat(el1.getString(), 32) x2, _ := strconv.ParseFloat(el2.getString(), 32) x3, _ := strconv.ParseFloat(el3.getString(), 32) x4, _ := strconv.ParseFloat(el4.getString(), 32) EnsureGC() draw2dkit.RoundedRectangle(gc, x1, x2, x3, x4, 10, 10) gc.FillStroke() return e })) e = add(e, "wg.FillStringAt", NewCode("wg.FillStringAt", 3, func(e *Engine, c *Thingy) *Engine { var el1, el2, el3 *Thingy el3, e.dataStack = popStack(e.dataStack) el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseFloat(el1.getString(), 32) x2, _ := strconv.ParseFloat(el2.getString(), 32) EnsureGC() // 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.White) gc.SetFontSize(15) gc.FillStringAt(el3.getString(), float64(x1), float64(x2)) // should always be called first for a new path return e })) e = add(e, "WG.CLEAR", NewCode("WG.CLEAR", 1, func(e *Engine, c *Thingy) *Engine { var el3 *Thingy el3, e.dataStack = popStack(e.dataStack) col := el3._structVal.(color.RGBA) wg.ClearImage(col) return e })) e = add(e, "WG.TEST", NewCode("WG.TEST", 0, func(e *Engine, c *Thingy) *Engine { /*var el1, el2,el3 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) el3, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseInt( el1.getString(), 10, 32 ) x2, _ := strconv.ParseInt( el2.getString(), 10, 32 ) col := el3._structVal.(color.RGBA) */ EnsureGC() // Set some properties gc.SetFillColor(color.RGBA{0x44, 0xff, 0x44, 0xff}) gc.SetStrokeColor(color.RGBA{0x44, 0x44, 0x44, 0xff}) gc.SetLineWidth(5) // Draw a closed shape gc.MoveTo(100, 100) // should always be called first for a new path gc.LineTo(600, 150) gc.QuadCurveTo(600, 10, 10, 10) gc.Close() gc.FillStroke() return e })) e = add(e, "WG.SETPOINT", NewCode("WG.SETPOINT", 3, func(e *Engine, c *Thingy) *Engine { var el1, el2, el3 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) el3, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseInt(el1.getString(), 10, 32) x2, _ := strconv.ParseInt(el2.getString(), 10, 32) col := el3._structVal.(color.RGBA) wg.GetImage().Set(int(x1), int(x2), col) return e })) e = add(e, "RGBA", NewCode("RGBA", 3, func(e *Engine, c *Thingy) *Engine { var el1, el2, el3, el4 *Thingy el1, e.dataStack = popStack(e.dataStack) el2, e.dataStack = popStack(e.dataStack) el3, e.dataStack = popStack(e.dataStack) el4, e.dataStack = popStack(e.dataStack) x1, _ := strconv.ParseInt(el1.getString(), 10, 32) x2, _ := strconv.ParseInt(el2.getString(), 10, 32) x3, _ := strconv.ParseInt(el3.getString(), 10, 32) x4, _ := strconv.ParseInt(el4.getString(), 10, 32) col := color.RGBA{uint8(x1), uint8(x2), uint8(x3), uint8(x4)} e.dataStack = append(e.dataStack, NewWrapper(col)) return e })) e = add(e, "WG.GETKEY", NewCode("WG.GETKEY", 0, func(e *Engine, c *Thingy) *Engine { var el1 *Thingy el1, e.dataStack = popStack(e.dataStack) xx, _ := strconv.ParseInt(el1.getString(), 10, 32) var ret *Thingy if wg.GetKey(int(xx)) { ret = NewBool(1) } else { ret = NewBool(0) } e.dataStack = append(e.dataStack, ret) return e })) e = add(e, "WG.START", NewCode("WG.START", 1, func(ne *Engine, c *Thingy) *Engine { CallbackState = ne var port *Thingy port, ne.dataStack = popStack(ne.dataStack) portnum, _ := strconv.ParseInt(port.getString(), 10, 32) wg.Start(800, 600, int(portnum), WgCallback) return ne })) e = add(e, "glfw.CreateWindow", NewCode("glfw.CreateWindow", 2, func(ne *Engine, c *Thingy) *Engine { var x, y, title *Thingy x, ne.dataStack = popStack(ne.dataStack) y, ne.dataStack = popStack(ne.dataStack) title, ne.dataStack = popStack(ne.dataStack) xx, _ := strconv.ParseInt(x.getString(), 10, 32) yy, _ := strconv.ParseInt(y.getString(), 10, 32) glfw.WindowHint(glfw.Resizable, glfw.False) glfw.WindowHint(glfw.ContextVersionMajor, 2) glfw.WindowHint(glfw.ContextVersionMinor, 1) window, err := glfw.CreateWindow(int(xx), int(yy), title.getString(), nil, nil) if err != nil { panic(err) } ne.dataStack = pushStack(ne.dataStack, NewWrapper(window)) return ne })) return e }
// 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() }