From 1021c5734b57cb4bfb0779598849578dade0ba94 Mon Sep 17 00:00:00 2001
From: qeesung <1245712564@qq.com>
Date: Sat, 20 Oct 2018 18:48:33 +0800
Subject: [PATCH] add convert package to convert a image to ascii matrix

---
 convert/convert.go | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 convert/convert.go

diff --git a/convert/convert.go b/convert/convert.go
new file mode 100644
index 0000000..818b1d9
--- /dev/null
+++ b/convert/convert.go
@@ -0,0 +1,47 @@
+// The convert package convert a image to ascii string or matrix
+package convert
+
+import (
+	"bytes"
+	"github.com/qeesung/image2asicc/ascii"
+	"github.com/qeesung/image2asicc/resize"
+	"image"
+	"image/color"
+)
+
+type Options struct {
+	Ratio float64
+}
+
+// Convert a image to ascii matrix
+func Image2ASCIIMatrix(image image.Image, options *Options) []string {
+	// Resize the convert first
+	newImage := resize.ScaleImage(image, options.Ratio)
+	sz := newImage.Bounds()
+	newWidth := sz.Max.Y
+	newHeight := sz.Max.X
+	rawCharValues := make([]string, int(newWidth*newHeight))
+	for i := 0; i < int(newWidth); i++ {
+		for j := 0; j < int(newHeight); j++ {
+			pixel := color.NRGBAModel.Convert(newImage.At(j, i))
+			// Convert the pixel to ascii char
+			pixelConvertOptions := ascii.NewOptions()
+			rawChar := ascii.ConvertPixelToASCII(pixel, &pixelConvertOptions)
+			rawCharValues = append(rawCharValues, rawChar)
+		}
+		rawCharValues = append(rawCharValues, "\n")
+	}
+	return rawCharValues
+}
+
+// Convert a image to ascii matrix, then concat the matrix value
+// to a long string for easy display
+func Image2ASCIIString(image image.Image, options *Options) string {
+	convertedPixelASCII := Image2ASCIIMatrix(image, options)
+	var buffer bytes.Buffer
+
+	for i := 0; i < len(convertedPixelASCII); i++ {
+		buffer.WriteString(convertedPixelASCII[i])
+	}
+	return buffer.String()
+}
-- 
2.45.2