+ 
+ 
+ 
= 
+
+
+
=
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[back] | 3.42. Pillow shape |
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The pillow shape [ 8 ] is represented by the following equations.
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x = cos(u) |
3-141 |
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y = cos(v) |
3-142 |
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z = a sin(u) sin(v) |
3-143 |
The constant a determines the appearance of the figure.
To represent the area, the two parameters u and v can assume the following values (domain of definition), for example.
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u is an element from the set of numbers [0, pi] |
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v is an element from the number set [-pi, pi] |
Since the pillow shape is a closed figure, the definition range must be adhered to exactly, it cannot be changed with the plugin.
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