Project: HiCAD 3-D

Scale Sketch Elements

Sketch > Transform > Scale

Use this function to scale, move and rotate lines and isolated points of a sketch in one step. When you call the function, the Scale dialogue window will be displayed:

The currently active step will be highlighted with an orange frame in the dialogue window. After calling of the function these steps consist in the selection of lines or points.

Step 1: Select option

Use the symbols at the top of the dialogue window to specify the handling of connected lines during scaling.

Scale lines, individually

If this option is active, only the actually selected lines (highlighted red) will be scaled. Connected lines will not be adjusted.

Preserve connected lines and adjust length

If this option is active, HiCAD will attempt to preserve the position of the connected lines if possible. In the process, the length of the lines to be scaled may be adjusted by means of new intersections. For distances the angle between connected lines will be preserved.

If it is not possible to preserve the connected lines, the symbol will be shown at the OK button.If you move the cursor over the symbol, an info message will be displayed.

Step 2: Select elements

Select the lines or isolated points that you wish to scale in the drawing, or use the functions of the context menu that you can open with a right-click during the selection process.

	Connected lines or edges* Use this function to select all lines or edges that are connected to the next identified edge in one step. The lines and edges will be selected up to a point where a continuation would no longer be unambiguous. This function can also be activated with the help of the SHIFT key: If you select a line while holding down the SHIFT key, all connected lines will be automatically selected as well.
	Tangentially connected lines or edges* Choose this function if you also want to select all tangentially connected lines or edges when identifying the next line or edge.
	Lines in rectangle (CTRL+LMB)* Use this function to select lines by means of a selection rectangle. Please note that only lines of the active part will be considered. If the rectangle is drawn from the top left to the bottom right, all lines which are completely located within the rectangle will be selected. If the rectangle is drawn from the top right to the bottom left, lines only portions of which are located within the rectangle (i.e. intersect with the rectangle) will be selected as well. The selected lines will be highlighted in a different colour. You can also call the function via the keyboard. Proceed as follows: Move the cursor to the position of the first corner point of the rectangle. Hold down the CTRL key and the left mouse button. Release the CTRL key and draw, while still holding down the left mouse button, the rectangle. When you then release the left mouse button, all lines/edges within the rectangle will be selected.
	Cancel (Esc) Cancels the function.

*Normally, already selected lines and edges will be de-selected if you click them again.

For the above functions marked with an asterisk *, however, the following applies: If you click lines that have already been selected or if already selected lines are located in a selection, they will not be removed from the selection.

The selected elements will be highlighted in the drawing and the number of selected elements will be shown in the dialogue window:

Press the middle mouse button to end the selection. Click the icon to expand the selection.

Step 3: Select point

After completion of the line selection (press middle mouse button), HiCAD automatically switches to the selection of the fixed point - the point the position of which is to remain unchanged. Specify this point using a point option.

In the case of planar sketches you have the option to select the origin of the active coordinate system. To do this, right-click and select Origin in the context menu.

To change den fixed point, click the symbol and select the desired point.

Step 4: Enter scale factor

Enter the scale factor or choose a value from the listbox.

Step 5: Select direction

If you want to perform the scaling in only one direction, activate this option.

The, determine the direction by

specifying the start point and the end point of the direction vector,
selecting a straight edge (no curve!), or
selecting a planar surface. In this case the surface normal will be used as the direction vector. In the case of planar sketches the direction vector will be projected into the sketch plane.

You have the additional option to right-click and open a context menu with further functions for direction specification.

	Origin The start point of the direction vector will be placed in the origin of the active coordinate system.
	X-axis (only for 3-D sketches) The X-axis of the active coordinate system will be chosen as the direction.
	Y-axis (only for 3-D sketches) The Y-axis of the active coordinate system will be chosen as the direction.
	Z-axis (only for 3-D sketches) The Z-axis of the active coordinate system will be chosen as the direction.
	Step back Jumps back to the previous step (if possible).
	Cancel Cancels the function without performing the displacement.

To change the direction, click the symbol and select the new direction as described above.

The result of the scaling will be dynamically visualized in the drawing.

To carry out the scaling - as shown in the preview - click OK or Apply.

If you select Apply, the dialogue window will remain open after performing the scaling. Only the list of the selected elements will be deleted in the process, all other settings will be preserved and cannot be changed. In this way, further elements can be scaled in the same way.

If you select OK, the dialogue window will be closed after the scaling.

If you middle-click in the drawing while the dialogue window is open, the following will happen:

If enough value inputs (at least line + fixed point) have been made, the function will be executed. The dialogue window will remain open (same as with Apply).
If the value inputs are insufficient, HiCAD will jump to the next required selection. For instance, if you have chosen the line to be scaled and then press the middle mouse button, HiCAD will jump to the selection of the fixed point. If you press the middle mouse button again after the fixed point selection, the function will be executed - even without a direction selection.

Example 1 - Scale factor 2, without direction: A: Scale lines individually, B: Adjust connected lines; (1) Selected sketch planes; (2) Fixed point; (3) Result

Example 2 - Scale factor 2, Direction via plane selection: (1) Selected sketch plane; (2) Fixed point and direction, (3) Result - Scale lines individually

Example 3 - Scale factor 2, Direction via specification of 2 points: (1) Selected sketch elements, (2) Fixed point and direction; (3) Result - Scale lines individually

Please note:

Instead of clicking Apply in the dialogue window, you can also press the middle mouse button (MMB) to apply the scaling.
The selected lines and isolated points must belong to the same sketch. Otherwise, a corresponding error message will be displayed.
HCM constraints will be adjusted if possible. If an adjustment is not possible, they will be removed.
If, after clicking Apply, a renewed selection of lines / isolated points leads to a conflict with an already selected direction, it will be deleted and needs to be selected anew.

Sketch Functions (3-D) • Clone Sketch Elements (3-D)

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