Matrix Composition
This page demonstrates the basics of scripting shapes RenderMan scenedescription (rib) protocol. Writing rib files by hand focuses attention on the use of color, opacity and the fundamental concepts related to xyz coordinate system.
The preliminary renders have been done using basic shading so that the geometry can be more easily seen.
I have been always facinated with the occurances of fractals in nature. As a result, i originally wanted to present a challenge to myself by recreating a plant featuring this phenomena in renderman. My Original idea was re-creating the Romanesco Broccoli, but my classmate Aleksandar Rodić had already persued that project, and also did the plant justice by capturing it's intriguing patterns.
I always seek to capture something very specific as opposed to abstract in my projects. Thus, my Next Inspiration was the Fibonacci Spiral Cactus.
I am currently in the process of uploading this page with the full explanations on my entire process of this project. These are my First Renders.
TransformBegin As Renderman parses this code, each translate and rotate value is added incrementally onto the last local axis position value. This was the base logic of the cactus leaves. |
This is the logic of the script: for i in range(num): This effectively translates each flower randomly across the x and z axis. y axis is set to 0 translation. The "scaley" and "scalez" variables are set to receive their value from "scalex", allowing each object's original proportions to be kept. |
 In addition to the render above, "DepthOfField 50.0 12.0 30.0" was adding, which worked appropriate for a field of view setting of 18. These values work hand in hand, so it took quite a number of tests to get this right. |
 The occlusion was multiplied over the image for this look. It was rendered with raytrace shadows. |
For Reference I have provided some original code:
