Ellipse drawing method and ellipse perimeter calculation method

An ellipse and perimeter technology, applied in the field of drawing method and its perimeter calculation, can solve the problems of other obstacles in the space, large engineering volume, small operating space, etc., and achieve the effect of facilitating later construction needs

Inactive Publication Date: 2015-10-14
马金身
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AI Technical Summary

Problems solved by technology

However, in construction, machinery or interior decoration, the operation space is small, or there are other obstacles in the space, the operation of drawing an ellipse using the existing method is complicated and the amount of work is large

Method used

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  • Ellipse drawing method and ellipse perimeter calculation method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0018] see figure 1 As shown, draw an ellipse according to the given semi-major axis length a and minor semi-axis length b:

[0019] Step 1. Calculate the long side 2e of the inscribed rectangle of the ellipse. The endpoints of the long sides of the inscribed rectangle are A and B respectively. The length of the line segment AB is 2e. Make the perpendicular line CD of the line segment AB. The line segment AB intersects with the line CD at E point;

[0020] Step 2, calculate the radius R of the great arc of the ellipse, Take A or B as the center and R as the radius to make an arc, intersect the straight line CD at point D, take D as the center and R as the radius to make an arc, and intersect the line segment AB at points A and B respectively, and the arc AB Intersect with line CD at point C;

[0021] Step 3, calculate the distance h between the highest point of the arc AB and the line segment AB, Take point C as the center, draw an arc with the length of the semi-minor a...

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Abstract

The invention relates to an ellipse drawing method and an ellipse perimeter calculation method, and discloses an ellipse drawing method and an ellipse perimeter calculation method which are used in architecture, machinery and interior decoration engineering. The ellipse drawing method comprises the following steps of: calculating the length of a long side of an inscribed rectangle of an ellipse; calculating the radius of a large arc; drawing the large arc; drawing the inscribed rectangle; calculating the radius of a small arc; and drawing the small arc and the like. The ellipse drawing method is simple in operation and low in engineering amount, and the requirement of ellipse drawing in fields such as engineering construction, interior decoration and the like can be met better.

Description

technical field [0001] The invention relates to a method for drawing an ellipse and a method for calculating its perimeter, in particular to a method for drawing an ellipse and a method for calculating its perimeter used in construction, machinery, and interior decoration projects. Background technique [0002] In construction, machinery, and interior decoration projects, it is often necessary to dig an elliptical hole of a specified size at a specified location, or to prefabricate an elliptical shape from existing materials. A common method is to use machines or equipment to draw graphics and then perform post-processing. However, in construction, machinery or interior decoration, the operation space is small, or there are other obstacles in the space, and the operation of drawing an ellipse using the existing method is complicated and the amount of work is large. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the pr...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 马金身马辰昊
Owner 马金身
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