NAME: fractal, 3d fractal AUTHOR INFO: Anonymous, Stardent Computer, 617-964-1000 SOURCE FILE: fractal.c TYPE: data INPUTS: None OUTPUTS: fractal: field 2D uniform scalar byte 3d fractal: field 3D uniform scalar byte PARAMETERS: Name Type Default Min Max max width integer 64 0 512 power float 2.0 0.0 5.0 Reseed one-shot DESCRIPTION: Fractal produces a mid-point displacement fractal in two or three dimensions. The controllers are: max width - the width of the generated mesh in powers of 2. It chooses the next highes power of two. So, the only available are 1, 2, 4, 8, 16, 32, 64, 128, 256, and 512. When you choose 62, you get 64, when you choose 65, you get 128. power - this the the "roughness" of the surface. Values near 0.0 are very rough. Values above 3.0 tend to be very smooth. Reseed - this is a one-shot button which causes an entire new set of random numbers to be generated. Until this button is hit, you will get essentially the same surface regardless of the other parameter settings. EXAMPLE 1: This network produces a 2D fractal and interprets it as an elevation data set used to simulate landscapes. It is on-line as fractal_2D.net. FRACTAL | GENERATE COLORMAP CLAMP |__________ ______| | | FIELD TO MESH | RENDER GEOMETRY | DISPLAY PIXMAP EXAMPLE 2: This network produces a 3D fractal and isosrufaces it. It is on-line as fractal_3D.net. FRACTAL 3D | FIELD TO FLOAT ____________|___________ | | ISOSURFACE VOLUME BOUNDS |______________________| | RENDER GEOMETRY | DISPLAY PIXMAP NAME: fractal, 3d fractal AUTHOR INFO: Anonymous, Stardent Computer, 617-964-1000 SOURCE FILE: fractal.c TYPE: data INPUTS: None OUTPUTS: fractal: field 2D uniform scalar byte 3d fractal: field 3D uniform scalar byte PARAMETERS: Name Type Default Min Max max width integer 64 0 512 power float 2.0 0.0 5.0 Reseed one-shot DESCRIPTION: Fractal produces a mid-point displacement fractal in two or three dimensions. The controllers are: max width - the width of the generated mesh in powers of 2. It chooses the next highes power of two. So, the only available are 1, 2, 4, 8, 16, 32, 64, 128, 256, and 512. When you choose 62, you get 64, when you choose 65, you get 128. power - this the the "roughness" of the surface. Values near 0.0 are very rough. Values above 3.0 tend to be very smooth. Reseed - this is a one-shot button which causes an entire new set of random numbers to be generated. Until this button is hit, you will get essentially the same surface regardless of the other parameter settings. EXAMPLE 1: This network produces a 2D fractal and interprets it as an elevation data set used to simulate landscapes. It is on-line as fractal_2D.net. FRACTAL | GENERATE COLORMAP CLAMP |__________ ______| | | FIELD TO MESH | RENDER GEOMETRY | DISPLAY PIXMAP EXAMPLE 2: This network produces a 3D fractal and isosrufaces it. It is on-line as fractal_3D.net. FRACTAL 3D | FIELD TO FLOAT ____________|___________ | | ISOSURFACE VOLUME BOUNDS |______________________| | RENDER GEOMETRY | DISPLAY PIXMAP