3D Perspective Projection on Canvas

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Experiments

Description

This walkthrough is inspired by an article on Creative JS. The demo shows how to convert 3D points into screen coordinates. Here we create a very simple particle system using 1 pixel dots rendered on a horizontal flat surface.

The 2 important factors controlling the appearance of a 3D projection are - field of view which is basically the zoom level or how far the elements are from us and the z-coordinates which determine the scaling/positioning of the elements on a 2d plane(the screen).

This article gives an excellent explaination of the geometry behind perspective projection.

purushothaman.K

nice tutorial. Code player so useful and easy way to learn.

sanjay singh

Amazing programming…very nice…

cainiao

amazing….
I am curious about how the cover was paint…
can anyone help me?thx

Mrugesh Mohapatra

A superb intro to the 3D Perspectives in JavaScript. Thanks

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