Brecht Van Lommel
9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
107 lines
2.6 KiB
Plaintext
107 lines
2.6 KiB
Plaintext
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#include "node_noise.h"
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#include "stdcycles.h"
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/* Wave */
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float wave(point p_input,
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string type,
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string bands_direction,
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string rings_direction,
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string profile,
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float distortion,
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float detail,
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float dscale,
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float droughness,
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float phase)
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{
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/* Prevent precision issues on unit coordinates. */
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point p = (p_input + 0.000001) * 0.999999;
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float n = 0.0;
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if (type == "bands") {
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if (bands_direction == "x") {
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n = p[0] * 20.0;
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}
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else if (bands_direction == "y") {
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n = p[1] * 20.0;
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}
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else if (bands_direction == "z") {
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n = p[2] * 20.0;
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}
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else { /* diagonal */
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n = (p[0] + p[1] + p[2]) * 10.0;
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}
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}
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else if (type == "rings") {
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point rp = p;
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if (rings_direction == "x") {
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rp *= point(0.0, 1.0, 1.0);
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}
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else if (rings_direction == "y") {
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rp *= point(1.0, 0.0, 1.0);
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}
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else if (rings_direction == "z") {
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rp *= point(1.0, 1.0, 0.0);
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}
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/* else: "spherical" */
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n = length(rp) * 20.0;
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}
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n += phase;
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if (distortion != 0.0) {
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n = n + (distortion * (fractal_noise(p * dscale, detail, droughness) * 2.0 - 1.0));
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}
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if (profile == "sine") {
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return 0.5 + 0.5 * sin(n - M_PI_2);
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}
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else if (profile == "saw") {
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n /= M_2PI;
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return n - floor(n);
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}
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else { /* profile tri */
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n /= M_2PI;
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return abs(n - floor(n + 0.5)) * 2.0;
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}
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}
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shader node_wave_texture(int use_mapping = 0,
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matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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string wave_type = "bands",
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string bands_direction = "x",
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string rings_direction = "x",
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string profile = "sine",
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float Scale = 5.0,
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float Distortion = 0.0,
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float Detail = 2.0,
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float DetailScale = 1.0,
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float DetailRoughness = 0.5,
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float PhaseOffset = 0.0,
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point Vector = P,
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output float Fac = 0.0,
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output color Color = 0.0)
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{
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point p = Vector;
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if (use_mapping)
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p = transform(mapping, p);
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Fac = wave(p * Scale,
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wave_type,
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bands_direction,
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rings_direction,
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profile,
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Distortion,
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Detail,
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DetailScale,
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DetailRoughness,
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PhaseOffset);
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Color = Fac;
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}
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