logging each steps

blend.go

@@ -5,6 +5,7 @@ import (
 	"image"
 	"image/color"
 	"image/jpeg"
+	"log"
 	"math"
 	"os"
 	"runtime"
@@ -13,10 +14,10 @@ import (
 
 // job passed to goroutines. blend color from img1 and img2 at position (x, y)
 type blendColorJob struct {
-	X      int
-	Y      int
-	Img1   image.Image
-	Img2   image.Image
+	X    int
+	Y    int
+	Img1 image.Image
+	Img2 image.Image
 }
 
 // new color after blend, to apply at position (x, y)
@@ -82,6 +83,8 @@ func (p *blendWorkerPool) SetImageWorker(newImage *image.RGBA) {
 }
 
 func (p *blendWorkerPool) BlendImages(img1 image.Image, img2 image.Image) {
+	log.Println("Blending the images...")
+
 	dimensions := getDimensions(img1, img2)
 	// output image, ready to receive pixel values
 	outImg := image.NewRGBA(dimensions)
@@ -103,9 +106,9 @@ func encodeImage(imgData *image.RGBA) {
 	outputFile := fmt.Sprintf("%s/%s", ConfigRegister.OutputDir, "output.jpg")
 	out, _ := os.Create(outputFile)
 	defer out.Close()
-	fmt.Print("Encoding the image...")
+	log.Println("Encoding the new image...")
 	jpeg.Encode(out, imgData, nil)
-	fmt.Println(" Done.")
+	log.Println("Done.")
 }
 
 // convert RGBA pixel to grayscale