image collector.
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2 changed files with 31 additions and 0 deletions
27
_examples/image_writer/main.go
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27
_examples/image_writer/main.go
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@ -0,0 +1,27 @@
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package main
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import (
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"fmt"
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"log"
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"github.com/wcharczuk/go-chart"
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)
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func main() {
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graph := chart.Chart{
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Series: []chart.Series{
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chart.ContinuousSeries{
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XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
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},
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},
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}
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collector := &chart.ImageWriter{}
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graph.Render(chart.PNG, collector)
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image, err := collector.Image()
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if err != nil {
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log.Fatal(err)
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}
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fmt.Printf("Final Image: %dx%d\n", image.Bounds().Size().X, image.Bounds().Size().Y)
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}
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@ -210,5 +210,9 @@ func (rr *rasterRenderer) ClearTextRotation() {
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// Save implements the interface method.
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// Save implements the interface method.
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func (rr *rasterRenderer) Save(w io.Writer) error {
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func (rr *rasterRenderer) Save(w io.Writer) error {
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if typed, isTyped := w.(RGBACollector); isTyped {
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typed.SetRGBA(rr.i)
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return nil
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}
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return png.Encode(w, rr.i)
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return png.Encode(w, rr.i)
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}
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}
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