draw_xld_modT_draw_xld_modDrawXldModDrawXldModdraw_xld_mod (算子)

名称

draw_xld_modT_draw_xld_modDrawXldModDrawXldModdraw_xld_mod — 交互式修改轮廓。

签名

描述

draw_xld_moddraw_xld_modDrawXldModDrawXldModDrawXldModdraw_xld_mod returns a contour, which has been interactively modified by the user in the window.

You can modify the contour in two ways: by editing the contour itself, e.g., by inserting or moving contour points, or by transforming the contour as a whole, e.g., by rotating moving or scaling it. Note that you can only edit a contour if EditEditEditEditeditedit is set to 'true'"true""true""true""true""true". Similarly, you can only rotate, move or scale it if RotateRotateRotateRotaterotaterotate, MoveMoveMoveMovemovemove, and ScaleScaleScaleScalescalescale, respectively, are set to 'true'"true""true""true""true""true".

draw_xld_moddraw_xld_modDrawXldModDrawXldModDrawXldModdraw_xld_mod starts in the transformation mode. In this mode, the contour is displayed together with 3 symbols: a cross in the middle and an arrow to the right if RotateRotateRotateRotaterotaterotate is set to 'true'"true""true""true""true""true", and a double-headed arrow to the upper right if ScaleScaleScaleScalescalescale is set to 'true'"true""true""true""true""true". To switch into the edit mode, press the Shift key; by pressing it again, you can switch back into the transformation mode.

Transformation Mode

In this mode a contour can be rotated, moved and scaled, as long as the respective parameter RotateRotateRotateRotaterotaterotate, MoveMoveMoveMovemovemove and ScaleScaleScaleScalescalescale are set to 'true'"true""true""true""true""true". The contour is displayed along with a cross in its center, an arrow pointing to the right (if RotateRotateRotateRotaterotaterotate is set to 'true'"true""true""true""true""true"), and a double arrow (if ScaleScaleScaleScalescalescale is set to 'true'"true""true""true""true""true").

• To move the contour, click with the left mouse button on the cross in the center and then drag it to the new position, i.e., keep the mouse button pressed while moving the mouse.

• To rotate it, click with the left mouse button on the arrow and then drag it, till the contour has the right direction.

• Scaling is achieved by dragging the double arrow. To keep the ratio the parameter KeepRatioKeepRatioKeepRatioKeepRatiokeepRatiokeep_ratio has to be set to 'true'"true""true""true""true""true".

Edit Mode

In this mode, the contour is display together with 5 pick points, which are located in the middle and at the corners of the surrounding rectangle. If the contour is closed, the pick points are displayed as squares, otherwise shaped like a 'u'. By clicking on a pick point, you can close an open contour and vice versa. Depending on the state of the contour, you can perform different modifications. Open contours (pick points shaped like a 'u')

• To append points, click with the left mouse button in the window and a new point is added at this position.

• You can delete the point appended last by pressing the Ctrl key.

• To move or insert points, you must first close the contour by clicking on one of the pick points.

Closed contours (square pick points)

• To move a point, click with the left mouse button on a point marked by a rectangle and then drag it to the new position.

• To insert a point, click with the left mouse button in the vicinity of a line and then move the mouse to the position where you want the new point to be placed.

• To delete a point, select the point which should be deleted with the left mouse button and then press the Ctrl key.

Pressing the right mouse button terminates the procedure.

注意

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.

执行信息

• 多线程类型：可重入（与非独占算子并行运行）。
• 多线程作用域：全局（可从任何线程调用）。
• 未采用并行化处理。

参数

结果

draw_xld_moddraw_xld_modDrawXldModDrawXldModDrawXldModdraw_xld_mod returns 2 ( H_MSG_TRUE) , if the window is valid and the needed drawing mode (see set_insertset_insertSetInsertSetInsertSetInsertset_insert) is available。如有必要，则抛出异常。

可能的前趋

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

可能的后继

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region, set_coloredset_coloredSetColoredSetColoredSetColoredset_colored, set_line_widthset_line_widthSetLineWidthSetLineWidthSetLineWidthset_line_width, set_drawset_drawSetDrawSetDrawSetDrawset_draw, set_insertset_insertSetInsertSetInsertSetInsertset_insert

替代

draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2, draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1draw_rectangle1, draw_rectangle2draw_rectangle2DrawRectangle2DrawRectangle2DrawRectangle2draw_rectangle2, draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region

另见

gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2gen_rectangle2, draw_circledraw_circleDrawCircleDrawCircleDrawCircledraw_circle, draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse, set_insertset_insertSetInsertSetInsertSetInsertset_insert

模块

基础

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