func (this *AsciiImg) Do(w, h int) string {
ascii := ""
if this.img == nil {
return ascii
}
rows := int(math.Ceil(float64(this.img.Bounds().Dy()) / float64(h)))
cols := int(math.Ceil(float64(this.img.Bounds().Dx()) / float64(w)))
for r := 0; r < rows; r++ {
for c := 0; c < cols; c++ {
x, y := c*w, r*h
avg := this.getBlockInfo(x, y, w, h)
ascii += string(gray.Get("default", avg))
}
ascii += "\r\n"
}
return ascii
}
func (this *AsciiImg) DoByCol(cols int) string {
ascii := ""
if this.img == nil {
return ascii
}
w := this.img.Bounds().Dx() / cols
h := w * 2
rows := this.img.Bounds().Dy() / h
for r := 0; r < rows; r++ {
for c := 0; c < cols; c++ {
x, y := c*w, r*h
avg := this.getBlockInfo(x, y, w, h)
ascii += string(gray.Get("default", avg))
}
ascii += "\r\n"
}
return ascii
}