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design_guide_2d_primitives [2018/03/05 13:25]
z3dev
design_guide_2d_primitives [2018/06/12 14:08]
z3dev
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 ===== 2D Primitives ===== ===== 2D Primitives =====
  
-ā€˜2Dā€™ stands for two (2) dimensional. A 2D primitive is any shape that has two dimensions, which are length and widthor X and Y. The 2D dimensional shapes have no thickness (Although, JSCAD shows a very thin shape.)+ā€˜2Dā€™ stands for two (2) dimensional. A 2D primitive is any shape that has two dimensions, which are width and length ​ (or X and Y.The 2D dimensional shapes have no thickness (Although, JSCAD shows a very thin shape.)
  
 One way of thinking about 2D shapes is anything that lays flat on a piece of paper, such as drawing a circle or a square. One way of thinking about 2D shapes is anything that lays flat on a piece of paper, such as drawing a circle or a square.
 +
 +The mathematical study of 2D shapes and dimensions is called [[https://​en.m.wikipedia.org/​wiki/​Plane_(geometry)|plane geometry]].
  
 === Resolution of Shapes === === Resolution of Shapes ===
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 All rounded shapes have a ''​resolution''​ option which controls tesselation. If ''​resolution''​ is set to 8, then 8 polygons are used to create 360 degrees of revolution. All rounded shapes have a ''​resolution''​ option which controls tesselation. If ''​resolution''​ is set to 8, then 8 polygons are used to create 360 degrees of revolution.
  
-This allows each design to control the amount of detail present, but beware that calculations and rendering time will also increase. For example, the number of polygons increases ​quadratically ​with each increase of the ''​resolution''​ for spheres.+This allows each design to control the amount of detail present, but beware that calculations and rendering time will also increase. For example, the number of polygons increases ​quickly ​with each increase of the ''​resolution''​ for circles.
  
 EXAMPLE EXAMPLE