Offset Calculation.

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The first thing you will need to calculate an offset is the reference point.

You can choose the reference point from the menu by changing the spinner as shown in the lefthand picture.

Once you have selected the reference point then press the Calculate offsets tab to proceed with the new coordinates calculation.


The next thing is to position the mouse over the desired point in the graphic and click the left mouse button to select this point in the graphic. A circle is then drawn as shown here. It means that for all points around the circle the distance to the center point is 288.4 meters and the coordinates are x=-273 and y=93 meters.

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If you need to work with larger distances you can change the scale factor to make your calculation.

Also you can make your selection of the new coordinates, or make some adjustments, using the two spinners in this panel.

Finally, once everything is set properly, press the OK button to accept the new coordinates.

 

The following examples explain two different calculations.

Example 1. This picture shows two objects. The Red box is our referenced object and is 30x50 units. We have to calculate the new Latitude and Longitude for the Blue box. It is 30x20 and is placed on the front right side of the Red box as in the picture. Follow these steps to find the new Latitude and Longitude coordinates:
1. Calculate the X and Y coordinates of the Blue box. In our case: X= 30, Y=-15
2. Either place the mouse cursor over the picture and move it over the grid until you get a readout of X=30 and Y=-15 or just move the spinners until you get these values.
3. The new Latitude and Longitude will be shown. Press the left mouse button to fix these coordinates and press the OK button to accept them.
4. End of the calculation. The program will exit from the Offset Panel calculation.

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Example 2. This picture shows the same objects as Example 1 but both objects are rotated 100 degrees. The calculation of the new Latitude and Longitude is as follows:
1. Same as in Example 1.
2. Same as in Example 1.
3. You are now over the new point - assuming the rotation is zero. You'll see on the right panel section the distance of this point to the center (0,0) as well as the angle. This means the new center point for the Blue box will be on a circle having a radius equal to the distance of this point to (0,0). In our example the distance is 33.5 units and the angle 116.4 degrees. Click now with the left mouse button and you will get a circle having a radius of 33.5.
4. To calculate the final center point for the Blue box add the angle and the object rotation values. That is 116.4 + 100 = 216.4. Following the circle line move your mouse until you get a readout of 216.4 degrees. In our example I got a readout of 216.3 (the closest possible to 216.4) and X=-19 and Y=-26. This is the New Latitude and Longitude position of the Blue box object. Just click the OK button to accept the new position.
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