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浅拷贝裁剪 - CroppedRef

函数简介

对图像进行浅拷贝裁剪,与 裁剪图片 - Cropped 不同:返回区域与父图共享底层像素数据(ROI 视图),不单独复制像素。

接口名称

CroppedRef

DLL调用

c
long CroppedRef(long ola, long image, int x1, int y1, int x2, int y2);

参数说明

参数名类型说明
ola长整数型OLAPlug对象的指针,由 CreateCOLAPlugInterFace 接口生成。
image长整数型图像句柄。
x1整数型裁剪区域左上角 X。
y1整数型裁剪区域左上角 Y。
x2整数型裁剪区域右下角 X。
y2整数型裁剪区域右下角 Y。

示例

SDK 调用

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.CroppedRef(0, 0, 0, 0, 0);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.CroppedRef(0, 0, 0, 0, 0);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.CroppedRef(0, 0, 0, 0, 0)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long handle = ola.CroppedRef(0, 0, 0, 0, 0);
cpp
var ola = com("OlaPlug.OlaSoft")
var handle = ola.CroppedRef(0, 0, 0, 0, 0)
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
handle = ola.CroppedRef(0, 0, 0, 0, 0)
text
.局部变量 ola, OLAPlug
ola.创建 ()
handle = ola.CroppedRef(0, 0, 0, 0, 0)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var handle = ola.CroppedRef(0, 0, 0, 0, 0);
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 handle = ola.CroppedRef(0, 0, 0, 0, 0)
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.CroppedRef(0, 0, 0, 0, 0);

原生 DLL 调用

cpp
long instance = CreateCOLAPlugInterFace();
CroppedRef(instance, 0, 0, 0, 0, 0);
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CroppedRef(long ola, long image, int x1, int y1, int x2, int y2);

long instance = CreateCOLAPlugInterFace();
CroppedRef(instance, 0, 0, 0, 0, 0);
python
from ctypes import CDLL, c_int, c_int64, create_string_buffer

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ola.CroppedRef(instance, 0, 0, 0, 0, 0)

返回值

长整数型:裁剪后的图像句柄;失败返回 0

注意事项

  • 返回的是 ROI 视图,修改返回图像会影响原图。
  • 返回句柄与父图像句柄关联;父图像释放时,该浅拷贝句柄会自动失效,请勿再继续使用。