bitmap.GetPortion() get the remains area bitmap error

[wilon]

• Robotgo version (or commit ref): latest
• Go version: 1.21
• Gcc version: gcc version 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)
• Operating system and bit: win10 x64
• Resolution: 1920x1080
• Can you reproduce the bug at Examples:
  • Yes (provide example code)
  • No
  • Not relevant
• Provide example code:

package main

import (
   "fmt"

   "github.com/go-vgo/robotgo"
   "github.com/vcaesar/bitmap"
)

func main() {

   // area
   bit := robotgo.CaptureScreen(100, 100, 500, 400)

   // after point 10,10 remains area, “Assertion failed!”
   bit1 := bitmap.GetPortion(bit, 10, 10, 490, 390)
   x1, y1 := bitmap.Find(bit1, bit, 0.1)
   fmt.Println(x1, y1)

}

• Log gist:

Assertion failed!

Program: C:\Users\ADMINI~1\AppData\Local\Temp\go-build3574158456\b001\exe\test.exe
File: C:/Users/Administrator/go/pkg/mod/github.com/vcaesar/bitmap@v0.10.0-beta3.2/base/bitmap/MMBitmap_c.h, Line 49

Expression: (bufsize + offset) <= (source->bytewidth * source->height)
exit status 3

Description

I want get the remains area bitmap from orgin bitmap, use bitmap.GetPortion, but failed.

[wilon]

Here are some tests.

   bit := robotgo.CaptureScreen(100, 100, 500, 400)
   bit1 := bitmap.GetPortion(bit, 0, 0, 500, 400) // It's ok
   bit2 := bitmap.GetPortion(bit, 1, 1, 499, 399) // Assertion failed!
   bit3 := bitmap.GetPortion(bit, 1, 1, 498, 398) // It's ok, but loss 1 row, 1 column