3D animation may seem to be the realm of big budget movies, and certainly major companies like Industrial Light and Magic use big budget software. Thankfully, the if you want to try 3d animation as a hobby, you can do an impressive amount of work using free software such as Blender. Alot of the principles are transferable across animation software in general.
This is the ninth tutorial in the series. Here I'll introduce you to raytracing. But for those of you who want to skip:
Raytracing is an excellent tool; it allows objects to reflect other objects and appear transparent. However it should be used sparingly as it is both time and memory expensive.
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Raytracing is an excellent tool; it allows objects to reflect other objects and appear transparent. However it should be used sparingly as it is both time and memory expensive.
one -- to enable raytracing
Go to the Render buttons and click ‘RAY’
All the raytracing settings are kept in one section of the material buttons. Click on "Mirrortransp" to display the options:
There are two main aspects; Ray Mirror (ie reflection) and Ray Transp (ie transparency).
two -- ray mirror
For RayMirror to work it’s button MUST be depressed.
The RayMir slider affects the amount an object is reflected.
The Fresnel slider affects the amount of distortion.
three -- ray transparency
For RayTrasp to work it’s button MUST be depressed.
The IOR (Index of refraction) slider creates a lens affect and bends light.
The Fresnel slider controls the amount of transparency of an object
four -- ray shadows
Ray shadow lets every lamp make a shadow – not just spotlight. To activate it go to the lamp buttons with your lamp selected and click the RayShadow button. This should be used sparingly however, as it affects render time.
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