Draw a Circle in Qcad

User Manual for QCad

nine Creating Objects

ix.1 Creating Points

	Click this push button from the toolbar to show the "Points" toolbar.

9.1.1 Creating Single Points

	Use this tool to create points in the drawing.

9.2 Creating Lines

	Click this button from the toolbar to bear witness the "Lines" toolbar.

ix.2.1 Creating Lines

	Create lines by clicking the start point and the endpoint.

ix.two.2 Creating Lines With Given Angles

	Create lines by typing the angle and clicking the position. The line gets constructed on to the borders of the screen. This is thought for after trimming.

9.2.3 Creating Horizontal Lines

	This tool draws horizontal lines on to the borders of the screen. Trim the lines to the desired length afterwards.

9.2.4 Creating Vertical Lines

	The same as horizontal lines just vertical.

9.2.5 Creating Rectangles

	Create rectangles by clicking 2 diagonal edges.

ix.2.half-dozen Creating Parallels

Create lines parallel to existing lines. Yous tin specify the distance in the box appearing at the top left of the window.

This tool works for arcs and circles equally well.

9.2.7 Creating Bisectors

Create lines in the half angle between ii existing lines. You can specify the length in the box appearing at the pinnacle left of the window.

The bisector appears betwixt the two lines and at the aforementioned side of the lines where the mouse cursor was located while clicking the objects.

9.two.8 Creating Tangents From Points To Circles

	Choose the signal and and then the circle or arc. The tangent gets drawn to the circle. Equally there are 2 possibilities, the one is drawn, which is next to the mouse cursor while clicking the circle.

9.ii.9 Creating Tangents From Circles To Circles

	Cull the circles. The tangent gets drawn between the circles. As there are four possibilities, the one is drawn, which is next to the mouse cursor while clicking the second circle.

9.2.ten Creating Orthogonal Lines

	Choose the base of operations element and set the position. A line gets created perpendicular to the base chemical element.

9.two.11 Creating Lines With Relative Angles

Choose the base chemical element, type an angle and set the position.

A line gets created with the given relative angle to the base of operations element.

9.3 Creating Arcs

	Click this button from the toolbar to show the "Lines" toolbar.

9.3.1 Creating Arcs (C,P,A)

This can exist used to draw arcs with a given middle, circumvolve line and the start / terminate angles. Click the center, a betoken on the circumvolve line and and so a point on the imaginary line from the middle to the start point of the arc and a point on the imaginary line from the center to the end betoken of the arc. During one of these operations you lot can choose the direction of the arc in the box actualization at the top left of the window:

9.iii.2 Creating Arcs (SP,P,EP)

	With this tool you tin create arcs with three points given: The start point, a point somewhere between on the arc and the endpoint. Click the start point first, so a point between and at last the endpoint.

9.3.3 Creating Parallel Arcs

Create arcs parallel to existing ones. Y'all can type the distance of the arc in the box appearing at the top left of the window.

This tool works for lines as well.

9.4 Creating Circles

	Click this button from the toolbar to show the "Circles" toolbar.

9.4.1 Creating Circles

	Create circles with a given center and a given radius. Enter a radius in the radius box at the top left and click the heart(due south) of the circle(s).

	Create circles with a given center and a point on the circumvolve line. Click the eye and then the point on the circle line.

	Create circles with three points on the circle line. Click all three points on the circle line to create a circle.

9.five Creating Texts

	Click this button from the toolbar to create texts.

The text dialog box appears:

	Tick the "Proportional" bank check box to automatically adjust the values "Letter spacing", "Word spacing" and "Line distance" to the "Textheight". If you don't tick "Proportional" you can accommodate these values individually.

	You tin create texts with a stock-still letter of the alphabet width by ticking the check box "Fixed width". This can be useful for inserting ASCII files which are formatted with spaces (lists, tables). For such purposes it's recommended to use the font "courier".

	Blazon the values for "Textheight", "Letter spacing", "Word spacing", "Line distance", "Bending" and "Radius". The post-obit sketches give you an idea virtually the meaning of these parameters:

Fig. 4: Parameters for directly texts.

Fig. five: Parameters for rounded texts.

	Choose the alignment and the text shape by clicking on the icons to actuate the radio buttons. The post-obit table gives y'all an overview of the possible combinations:

Fig. six: The different text shapes.

	Choose a font from the "Font" combo box. Possible fonts are:

ISO normal
ISO cursive
Courier

	Blazon the text in the text expanse or load an existing text field into the expanse. You can also paste a text which you lot have copied in some other application.

	There are another functions bachelor for the text expanse in the text dialog:

	Click to erase the text area. Click to open an existing file into the text area. Click to salvage the current text into a file. Click to cut the selected text to the clipboard. Click to copy the selected text to the clipboard. Click to paste the text on the clipboard to the text expanse.

Creating Your Own Fonts

	QCad allows you to create your ain fonts or change the existing fonts. You may for example be interested to add letters you're missing to a font.

9.6 Creating Dimensions

9.half dozen.1 The dimension options panel

	Most dimensioning tools evidence a console at the top left of the graphic window. This console allows you to configure the label of the electric current dimension.

Fig. vii: The dimension panel is used for adjusting the dimension's characterization.

Fig. viii: A dimension created with the settings shown to a higher place.

Fig. 9: Some more examples for dimensioning labels.

	Click this push from the toolbar to evidence the "Dimensions" toolbar.

ix.six.two Creating Aligning Dimensions

	This tool will create a dimension which is parallel to an imaginary line between two given points. The extension lines are drawn to the 2 points.

Fig. 10: For this example, the two center points of the circles were chosen as references.

	Later setting the reference points, you lot must also gear up the location of the dimension line.

9.vi.iii Creating Horizontal / Vertical Dimensions

	These often used dimensioning tools allows you to create horizontal / vertical dimensions. The two reference points don't have to be on the same horizontal / vertical line.

Fig. 11: The reference points for this dimension are the endpoints of the bevel.

9.six.4 Creating Angle Dimensions

	With this tool, it'south possible to create angle dimensions between two lines. If you need to dimension an angle but don't take two lines, I recommend to construct two auxiliary lines first. You can delete these lines afterward doing the dimensioning, if you like.

	First yous take to click the two lines which define the angle (counter-clockwise). Then you tin can gear up the dimensioning line location and later the endpoints of the extension lines.

Fig. 12: A typical angle dimension.

9.6.five Creating Diameter Dimensions

	For dimensioning diameters of circles, you tin can use this tool. Simply click the circle, set the angle and the location of the dimension line.

Fig. 13: Diameter dimension.

9.half dozen.half-dozen Creating Radius Dimensions

	Click the angle or circle and prepare the location of the dimension endpoint respectively the position of the measuring text.

Fig. 14: Radius dimension.

ix.6.7 Creating Arrows

	This tool allows you to draw arrows by defining the first and the end point. The second betoken is the point where the arrow appears. The pointer gets drawn without whatsoever text besides.

9.7 Creating Hatches

After choosing this part you lot must select the elements of one or more than closed contours. The elements should be continued properly. Otherwise the consequence is undefined. If you select two overlapping contours, however, every other surface area gets hatched. QCad currently can't hatch contours given by non continued but intersected bounding objects. Please cutting these objects at the edges and select but the airtight profile then, like shown in the effigy beneath.

	If you've chosen the contours, click the arrow button at the lesser of the selecting toolbar. The hatching dialog box appears:

	In the left combobox, you tin can choose a pattern and in the right one the factor for the design. Currently there are these patterns available as defaults:

9.7.1 Creating Your Own Patterns

	You can also create your own additional patterns for QCad. Please refer to chapter Additional Features for more than information.

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Source: http://www.mlb.co.jp/linux/science/qcad/doc/en/010.html