draw_regionT_draw_regionDrawRegionDrawRegiondraw_region (算子名称)

名称

draw_regionT_draw_regionDrawRegionDrawRegiondraw_region — Interactive drawing of a closed region.

参数签名

描述

draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region produces an image. The region of that image spans exactly the image region entered interactively by mouse clicks (gray values remain undefined). Painting happens in the output window while keeping the left mouse button pressed. The left mouse button even operates by clicking in the output window; through this a line between the previous clicked points is drawn. Clicking the right mouse button terminates input and closes the outline. Subsequently the image is “filled up”. Also it contains the whole image area enclosed by the mouse.

Painting uses that color which has been set by set_colorset_colorSetColorSetColorSetColorset_color, set_rgbset_rgbSetRgbSetRgbSetRgbset_rgb, etc. .

Pressing the right mouse button terminates the procedure.

注意

The output object's gray values are not defined.

If used in a buffer window, mouse events have to be supplied by the application, while the draw operator must be run in another thread.

运行信息

• 多线程类型:可重入(与非独占操作符并行运行)。
• 多线程作用域:全局(可以从任何线程调用)。
• 未经并行化处理。

参数表

read_image(Image,'fabrik')
dev_display (Image)
draw_region(Region,WindowHandle)
reduce_domain(Image,Region,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

read_image(&Image,"fabrik");
disp_image(Image,WindowHandle);
draw_region(&Region,WindowHandle);
reduce_domain(Image,Region,&New);
regiongrowing(New,&Segmente,5,5,6,50);
set_colored(WindowHandle,12);
disp_region(Segmente,WindowHandle);

read_image(Image,'fabrik')
dev_display (Image)
draw_region(Region,WindowHandle)
reduce_domain(Image,Region,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

read_image(Image,'fabrik')
dev_display (Image)
draw_region(Region,WindowHandle)
reduce_domain(Image,Region,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

read_image(Image,'fabrik')
dev_display (Image)
draw_region(Region,WindowHandle)
reduce_domain(Image,Region,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

结果

If the window is valid, draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region returns 2 ( H_MSG_TRUE) . 如有必要，将引发异常。

可能的前置算子

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

可能的后置算子

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region, set_coloredset_coloredSetColoredSetColoredSetColoredset_colored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width, set_drawset_drawSetDrawSetDrawSetDrawset_draw

可替代算子

draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle, draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse, draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1draw_rectangle1, draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2

参考其它

draw_polygondraw_polygonDrawPolygonDrawPolygonDrawPolygondraw_polygon, reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, fill_upfill_upFillUpFillUpFillUpfill_up, set_colorset_colorSetColorSetColorSetColorset_color

模块

Foundation