add space invaders structure #33 (41c9d6c2) · Commits · blackheaven / tinygraphs

app-backend/main.go

+3 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@ import (
		"github.com/taironas/route"
		"github.com/taironas/tinygraphs/controllers/checkerboard"
		"github.com/taironas/tinygraphs/controllers/isogrids"
		"github.com/taironas/tinygraphs/controllers/spaceinvaders"
		"github.com/taironas/tinygraphs/controllers/squares"
		)

		@@ -40,6 +41,8 @@ func main() {
		r.HandleFunc("/isogrids/labs/gridbw", isogrids.GridBW)
		r.HandleFunc("/isogrids/labs/grid2colors", isogrids.Grid2Colors)

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

		r.AddStaticResource(root)

		log.Println("Listening on " + os.Getenv("PORT"))

0 → 100644

+51 −0

Original line number	Diff line number	Diff line
		package spaceinvaders

		import (
		"crypto/md5"
		"fmt"
		"image/color"
		"io"
		"log"
		"net/http"

		"github.com/taironas/route"
		"github.com/taironas/tinygraphs/colors"
		"github.com/taironas/tinygraphs/draw/spaceinvaders"
		"github.com/taironas/tinygraphs/extract"
		"github.com/taironas/tinygraphs/write"
		)

		// SpaceInvaders handler for /spaceinvaders/:key
		func SpaceInvaders(w http.ResponseWriter, r *http.Request) {
		var err error
		var key string
		if key, err = route.Context.Get(r, "key"); err != nil {
		log.Println("Unable to get 'key' value: ", err)
		key = ""
		}

		h := md5.New()
		io.WriteString(h, key)
		key = fmt.Sprintf("%x", h.Sum(nil)[:])

		colorMap := colors.MapOfColorThemes()
		bg, fg := extract.ExtraColors(r, colorMap)
		theme := extract.Theme(r)
		numColors := extract.NumColors(r)

		var colors []color.RGBA
		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)
		}

		size := extract.Size(r)

		write.ImageSVG(w)
		spaceinvaders.SpaceInvaders(w, key, colors, size)
		}

0 → 100644

+39 −0

Original line number	Diff line number	Diff line
		package spaceinvaders

		import (
		"image/color"
		"math"
		"net/http"

		"github.com/ajstarks/svgo"
		"github.com/taironas/tinygraphs/draw"
		)

		func SpaceInvaders(w http.ResponseWriter, key string, colors []color.RGBA, size int) {
		canvas := svg.New(w)
		canvas.Start(size, size)

		squares := 6
		quadrantSize := size / squares
		middle := math.Ceil(float64(squares) / float64(2))
		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 {
		if float64(xQ) < middle {
		colorMap[xQ] = draw.PickColor(key, colors, xQ+3*yQ)
		} else if xQ < squares {
		colorMap[xQ] = colorMap[squares-xQ-1]
		} else {
		colorMap[xQ] = colorMap[0]
		}
		}
		canvas.Rect(x, y, quadrantSize, quadrantSize, draw.FillFromRGBA(colorMap[xQ]))
		}
		}
		canvas.End()
		}