wterrain

Name

wterrain --  A simple wave-terrain synthesis opcode.

Description

A simple wave-terrain synthesis opcode.

Syntax

aout wterrain kamp, kpch, k_xcenter, k_ycenter, k_xradius, k_yradius, itabx, itaby

Initialization

itabx, itaby -- The two tables that define the terrain.

Performance

The output is the result of drawing an ellipse with axes k_xradius and k_yradius centered at (k_xcenter, k_ycenter), and traversing it at frequency kpch.

Examples

Here is an example of the wterrain opcode. It uses the files wterrain.orc and wterrain.sco.

Example 15-1. Example of the wterrain opcode.

/* wterrain.orc */
; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

instr 1
kdclk   linseg  0, 0.01, 1, p3-0.02, 1, 0.01, 0
kcx     line    0.1, p3, 1.9
krx     linseg  0.1, p3/2, 0.5, p3/2, 0.1
kpch    line    cpspch(p4), p3, p5 * cpspch(p4)
a1      wterrain    10000, kpch, kcx, kcx, -krx, krx, p6, p7
a1      dcblock a1
        out     a1*kdclk
endin
/* wterrain.orc */
        
/* wterrain.sco */
f1      0       8192    10      1 0 0.33 0 0.2 0 0.14 0 0.11
f2      0       4096    10      1

i1      0       4       7.00 1 1 1
i1      4       4       6.07 1 1 2
i1      8       8       6.00 1 2 2
e
/* wterrain.sco */
        

Credits

Author: Matthew Gillard
New in version 4.19