ajstarks

pi@raspberrypi ~/go/src $ time ./all.bash
##### Building Go bootstrap tool.
cmd/dist

##### Building Go toolchain using /home/pi/go1.4.
bootstrap/internal/obj
bootstrap/asm/internal/flags
bootstrap/compile/internal/big
bootstrap/internal/gcprog
bootstrap/internal/obj/arm

ajstarks

$ time ./all.bash
##### Building Go bootstrap tool.
cmd/dist

##### Building Go toolchain using /Users/ajstarks/go1.4.
bootstrap/internal/obj
bootstrap/asm/internal/flags
bootstrap/compile/internal/big
bootstrap/internal/gcprog
bootstrap/internal/obj/arm

ajstarks

// Copyright 2015 Google Inc. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//     http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

ajstarks

// uni: make glyph tables
package main

import (
	"flag"
	"fmt"
	"os"

	"github.com/ajstarks/svgo"
)

ajstarks

// gurl - get the contents of a url to stdout, -v show response on stderr
package main

import (
	"errors"
	"flag"
	"fmt"
	"io"
	"net/http"
	"os"

ajstarks

package main

import (
	"os"
	"github.com/ajstarks/deck/generate"
)

ajstarks

	<slide>
		<text xp="30" yp="48" sp="5" align="right">Data</text>
		<text xp="70" yp="48" sp="5" align="left">Picture</text>
		<rect xp="45" yp="50" wp="28" hp="4" color="gray"/>
		<polygon xc="58 70 58" yc="55 50 45" color="gray"/>
	</slide>

ajstarks

The other side of Go: Programming Pictures, the Read, Parse, Draw Pattern

Go has proven to be extremely versatile and well suited to back-end tasks, but sometimes you need a picture, and I've found that Go works well for generating visuals as well. This post will explore one method for generating pictures (specifically vector graphics) from data using the SVGo package.

The SVGo package API

ajstarks

<components  gutter="50" top="50" left="50" gc="steelblue">
	<comp id="io"		name="io"  row="0" col="1" width="120" height="40" shape="plain">
		<connect mark="d" dest="errors" sloc="e" dloc="w"/>
		<connect mark="d" dest="sync"   sloc="s" dloc="n"/>
	</comp>
	
	<comp id="errors"	name="errors" row="0" col="2" width="120" height="40"  shape="plain"/>
	
	<comp id="sync"		name="sync"	  row="1" col="1" width="120" height="40"  shape="plain">
		<connect mark="d" dest="sa" sloc="w" dloc="n" dir="ccw"/>

ajstarks

// pbox -- porportional box
package main

import (
	"encoding/xml"
	"fmt"
	"github.com/ajstarks/svgo"
	"io"
	"os"
)