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package main
import (
"brlines/lines"
"flag"
"fmt"
"log"
"os"
)
const imagesize = 0x1f4
func main() {
log.SetFlags(0)
flag.Usage = flagUsage
xa := flag.Int("xa", 0, "x coordinate of point a")
ya := flag.Int("ya", 0, "y coordinate of point a")
xb := flag.Int("xb", 0, "x coordinate of point b")
yb := flag.Int("yb", 0, "y coordinate of point b")
ot := flag.String("pt", "br_resualt.png", "output png file to save results")
flag.Parse()
if *xa < 0 || *xa > 19 || *xb < 0 || *xb > 19 || *ya < 0 || *ya > 19 || *yb < 0 || *yb > 19 {
log.Fatalf("fatal error: %v", "bad input, please use coordinates 0 upto 19")
}
img, err := lines.NewBreLine(imagesize, *ot)
if err != nil {
log.Fatalf("fatal error: %v", err)
}
img.DrawMesh()
img.BresenhamLine(*xa, *ya, *xb, *yb)
if err := img.WriteToFile(); err != nil {
log.Fatalf("fatal error: %v", err)
}
}
func flagUsage() {
fmt.Printf(`usage of bresenham line simulator:
%v options...
options:
--pt <file> named png file to save bresenham output
default path for this file is br_resualt.png
--xa <uint> x coordinate of starting point
--xb <uint> x coordinate of ending point
--ya <uint> y coordinate of starting point
--yb <uint> y coordinate of ending point
example:
%v --pt mytest.png --xa 8 --ya 3 --xb 2 --yb 10
Copyright (c) 2022 snix.ir, All rights reserved.
Developed BY <Sina Ghaderi> sina@snix.ir
This work is licensed under the terms of the MIT licence
Github: github.com/sina-ghaderi and Source: git.snix.ir
`, os.Args[0], os.Args[0])
}
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