Commit ec8d4081 authored by santiaago's avatar santiaago
Browse files

add random gradient banner #36

parent 51cbd249

app-backend/main.go

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ func main() { 


	r.HandleFunc("/squares", squares.Random)

	r.HandleFunc("/squares/banner/random", squares.BannerRandom)

	r.HandleFunc("/squares/banner/random/gradient", squares.BannerRandomGradient)

	r.HandleFunc("/squares/:key", squares.Square) //cached

	r.HandleFunc("/isogrids/:key", isogrids.Isogrids)

	r.HandleFunc("/spaceinvaders/:key", spaceinvaders.SpaceInvaders)

colors/colors.go

+2 −5
Original line number Diff line number Diff line
@@ -8,10 +8,9 @@ import ( 
func MapOfColorThemes() map[string][]color.RGBA {

	return map[string][]color.RGBA{

		"base": []color.RGBA{

			color.RGBA{uint8(255), uint8(255), uint8(255), uint8(255)},

			color.RGBA{uint8(0), uint8(0), uint8(0), uint8(255)},

			color.RGBA{uint8(0), uint8(0), uint8(0), uint8(255)},       // white

			color.RGBA{uint8(255), uint8(255), uint8(255), uint8(255)}, // back

		},



		"sugarsweets": []color.RGBA{

			color.RGBA{232, 70, 134, 255},  // main

			color.RGBA{255, 245, 249, 255}, //background
@@ -53,14 +52,12 @@ func MapOfColorThemes() map[string][]color.RGBA { 
			color.RGBA{244, 234, 252, 255}, //background

			color.RGBA{70, 86, 212, 255},   // 2dary

			color.RGBA{201, 64, 206, 255},  // 2dary



		},

		"frogideas": []color.RGBA{

			color.RGBA{93, 214, 75, 255},   // main

			color.RGBA{226, 255, 222, 255}, //background

			color.RGBA{67, 191, 134, 255},  // 2dary

			color.RGBA{148, 232, 56, 255},  // 2dary



		},

		"berrypie": []color.RGBA{

			color.RGBA{248, 0, 6, 255},     // main

controllers/squares/banner.go

+35 −0
Original line number Diff line number Diff line
@@ -46,3 +46,38 @@ func BannerRandom(w http.ResponseWriter, r *http.Request) { 
		squares.RandomGridSVG(w, colors, width, height, 50)

	}

}



// BannerRandom handler for "/squares/banner/random/gradient"

// generates a random banner grid image with gradient colors from brighter to darker color.

func BannerRandomGradient(w http.ResponseWriter, r *http.Request) {

	width := extract.Width(r)

	height := extract.Height(r)



	numColors := extract.NumColors(r)



	colorMap := colors.MapOfColorThemes()



	bg, fg := extract.ExtraColors(r, colorMap)



	var colors []color.RGBA

	theme := extract.Theme(r)

	if theme != "base" {

		if _, ok := colorMap[theme]; ok {

			colors = append(colors, colorMap[theme][0:numColors]...)

		} else {

			colors = append(colors, colorMap["base"]...)

		}

	} else {

		colors = append(colors, bg, fg)

	}



	if f := extract.Format(r); f == format.JPEG {

		m := image.NewRGBA(image.Rect(0, 0, width, height))

		squares.RandomGradientGrid(m, colors, 50)

		var img image.Image = m

		write.ImageJPEG(w, &img)

	} else if f == format.SVG {

		write.ImageSVG(w)

		squares.RandomGradientGridSVG(w, colors, width, height, 50)

	}

}

draw/squares/random.go

0 → 100644
+100 −0
Original line number Diff line number Diff line 
package squares



import (

	"image"

	"image/color"

	"net/http"



	"github.com/ajstarks/svgo"

	"github.com/taironas/tinygraphs/draw"

)



// RandomGrid builds a grid image with with x colors selected at random for each quadrant.

func RandomGrid(m *image.RGBA, colors []color.RGBA, xSquares int) {

	size := m.Bounds().Size()

	quad := size.X / xSquares

	colorMap := make(map[int]color.RGBA)

	var currentQuadrand = 0

	for x := 0; x < size.X; x++ {

		if x/quad != currentQuadrand {



			colorMap = make(map[int]color.RGBA)

			currentQuadrand = x / quad

		}

		for y := 0; y < size.Y; y++ {

			yQuadrant := y / quad

			if _, ok := colorMap[yQuadrant]; !ok {

				colorMap[yQuadrant] = draw.RandomColorFromArray(colors)

			}

			m.Set(x, y, colorMap[yQuadrant])

		}

	}

}



// RandomGradientGrid builds a grid image with with x colors selected at random for each quadrant going from brighter to dracker color.

func RandomGradientGrid(m *image.RGBA, colors []color.RGBA, xSquares int) {

	size := m.Bounds().Size()

	quad := size.X / xSquares

	colorMap := make(map[int]color.RGBA)

	var currentQuadrand = 0

	for x := 0; x < size.X; x++ {

		if x/quad != currentQuadrand {



			colorMap = make(map[int]color.RGBA)

			currentQuadrand = x / quad

		}

		percentage := int(float64(x) / float64(size.X) * 100)

		for y := 0; y < size.Y; y++ {

			yQuadrant := y / quad

			if _, ok := colorMap[yQuadrant]; !ok {

				colorMap[yQuadrant] = draw.ColorByPercentage(colors, percentage)

			}

			m.Set(x, y, colorMap[yQuadrant])

		}

	}

}



// RandomGridSVG builds a grid image with with x colors selected at random for each quadrant.

func RandomGridSVG(w http.ResponseWriter, colors []color.RGBA, width, height, xSquares int) {

	canvas := svg.New(w)

	canvas.Start(width, height)

	squares := xSquares

	quadrantSize := width / squares

	colorMap := make(map[int]color.RGBA)

	for yQ := 0; yQ < squares; yQ++ {

		y := yQ * quadrantSize

		colorMap = make(map[int]color.RGBA)



		for xQ := 0; xQ < squares; xQ++ {

			x := xQ * quadrantSize

			if _, ok := colorMap[xQ]; !ok {

				colorMap[xQ] = draw.RandomColorFromArray(colors)

			}

			canvas.Rect(x, y, quadrantSize, quadrantSize, draw.FillFromRGBA(colorMap[xQ]))

		}

	}

	canvas.End()

}



// RandomGradientGridSVG builds a grid image with with x colors selected at random for each quadrant.

func RandomGradientGridSVG(w http.ResponseWriter, colors []color.RGBA, width, height, xSquares int) {

	canvas := svg.New(w)

	canvas.Start(width, height)

	squares := xSquares

	quadrantSize := width / squares

	colorMap := make(map[int]color.RGBA)

	for yQ := 0; yQ < squares; yQ++ {

		y := yQ * quadrantSize

		colorMap = make(map[int]color.RGBA)



		for xQ := 0; xQ < squares; xQ++ {

			x := xQ * quadrantSize

			if _, ok := colorMap[xQ]; !ok {

				percentage := int(float64(xQ) / float64(squares) * 100)

				colorMap[xQ] = draw.ColorByPercentage(colors, percentage)

			}

			canvas.Rect(x, y, quadrantSize, quadrantSize, draw.FillFromRGBA(colorMap[xQ]))

		}

	}

	canvas.End()

}

draw/squares/squares.go

+2 −44
Original line number Diff line number Diff line
@@ -54,50 +54,7 @@ func GridSVG(w http.ResponseWriter, color1, color2 color.RGBA, size int) { 
	canvas.End()

}



// RandomGrid builds a 6 by 6 grid image with with 2 colors selected at random for each quadrant.

func RandomGrid(m *image.RGBA, colors []color.RGBA, xSquares int) {

	size := m.Bounds().Size()

	quad := size.X / xSquares

	colorMap := make(map[int]color.RGBA)

	var currentQuadrand = 0

	for x := 0; x < size.X; x++ {

		if x/quad != currentQuadrand {

			// quadrant changed, clear map

			colorMap = make(map[int]color.RGBA)

			currentQuadrand = x / quad

		}

		for y := 0; y < size.Y; y++ {

			yQuadrant := y / quad

			if _, ok := colorMap[yQuadrant]; !ok {

				colorMap[yQuadrant] = draw.RandomColorFromArray(colors)

			}

			m.Set(x, y, colorMap[yQuadrant])

		}

	}

}



// RandomGrid6X6SVG builds a grid image with with 2 colors selected at random for each quadrant.

func RandomGridSVG(w http.ResponseWriter, colors []color.RGBA, width, height, xSquares int) {

	canvas := svg.New(w)

	canvas.Start(width, height)

	squares := xSquares

	quadrantSize := width / squares

	colorMap := make(map[int]color.RGBA)

	for yQ := 0; yQ < squares; yQ++ {

		y := yQ * quadrantSize

		colorMap = make(map[int]color.RGBA)



		for xQ := 0; xQ < squares; xQ++ {

			x := xQ * quadrantSize

			if _, ok := colorMap[xQ]; !ok {

				colorMap[xQ] = draw.RandomColorFromArray(colors)

			}

			canvas.Rect(x, y, quadrantSize, quadrantSize, draw.FillFromRGBA(colorMap[xQ]))

		}

	}

	canvas.End()

}



// Squares builds an image with 6 by 6 quadrants of alternate colors.

func Squares(m *image.RGBA, key string, colors []color.RGBA) {

	size := m.Bounds().Size()

	squares := 6
@@ -128,6 +85,7 @@ func Squares(m *image.RGBA, key string, colors []color.RGBA) { 
	}

}



// SquaresSVG builds an image with 6 by 6 quadrants of alternate colors.

func SquaresSVG(w http.ResponseWriter, key string, colors []color.RGBA, size int) {

	canvas := svg.New(w)

	canvas.Start(size, size)