72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
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package graphics
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import (
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"bytes"
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"fmt"
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"git.openprivacy.ca/sarah/microworlds/core"
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"github.com/veandco/go-sdl2/sdl"
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"github.com/wcharczuk/go-chart"
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"image"
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"log"
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"os"
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)
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type Plot struct {
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Graphics
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GeneratePlot func(*core.Environment, []*core.Turtle) *chart.Chart
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}
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func NewPlot(title string, width, height, pxsize int32) *Plot {
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graphics := new(Plot)
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graphics.width = width
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graphics.height = height
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window, err := sdl.CreateWindow(title, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
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width, height, sdl.WINDOW_SHOWN|sdl.WINDOW_RESIZABLE)
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if err != nil {
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panic(err)
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}
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graphics.window = window
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surface, _ := window.GetSurface()
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renderer, err := sdl.CreateSoftwareRenderer(surface)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
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panic(err)
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}
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graphics.colorMap = make(map[string][4]uint8)
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graphics.renderer = renderer
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return graphics
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}
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func (p *Plot) Render(env *core.Environment, turtles []*core.Turtle) {
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graph := p.GeneratePlot(env, turtles)
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// graph.Elements = []chart.Renderable{chart.Legend(graph)}
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w, h := p.window.GetSize()
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surface, _ := p.window.GetSurface()
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renderer, _ := sdl.CreateSoftwareRenderer(surface)
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p.renderer = renderer
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graph.Width = int(w)
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graph.Height = int(h)
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if env.Step > 2 {
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buffer := bytes.NewBuffer([]byte{})
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err := graph.Render(chart.PNG, buffer)
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if err != nil {
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log.Fatal(err)
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}
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graph, _, _ := image.Decode(buffer)
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for x := 0; x < int(w); x++ {
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for y := 0; y < int(h); y++ {
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col := graph.At(x, y)
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r, g, b, a := col.RGBA()
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p.renderer.SetDrawColor(uint8(r), uint8(g), uint8(b), uint8(a))
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p.renderer.DrawPoint(int32(x), int32(y))
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}
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}
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}
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p.window.UpdateSurface()
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}
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