a4260ac219
This simulates the effect of a honeycomb or grid placed in front of a softbox. In practice, it works by attenuating rays coming off-angle as a function of the provided spread angle parameter. Setting the parameter to 180 degrees poses no restrictions to the rays, making the light behave the same way as before this patch. The total light power is normalized based on the spread angle, so that the light strength remains the same. Differential Revision: https://developer.blender.org/D10594
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup DNA
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*/
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#pragma once
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/* Struct members on own line. */
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/* clang-format off */
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/* -------------------------------------------------------------------- */
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/** \name Light Struct
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* \{ */
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#define _DNA_DEFAULT_Light \
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{ \
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.r = 1.0f, \
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.g = 1.0f, \
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.b = 1.0f, \
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.k = 1.0f, \
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.energy = 10.0f, \
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.dist = 25.0f, \
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.spotsize = DEG2RADF(45.0f), \
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.spotblend = 0.15f, \
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.att2 = 1.0f, \
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.mode = LA_SHADOW, \
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.bufsize = 512, \
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.clipsta = 0.05f, \
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.clipend = 40.0f, \
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.bleedexp = 2.5f, \
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.samp = 3, \
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.bias = 1.0f, \
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.soft = 3.0f, \
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.area_size = 0.25f, \
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.area_sizey = 0.25f, \
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.area_sizez = 0.25f, \
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.buffers = 1, \
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.preview = NULL, \
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.falloff_type = LA_FALLOFF_INVSQUARE, \
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.coeff_const = 1.0f, \
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.coeff_lin = 0.0f, \
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.coeff_quad = 0.0f, \
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.cascade_max_dist = 200.0f, \
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.cascade_count = 4, \
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.cascade_exponent = 0.8f, \
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.cascade_fade = 0.1f, \
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.contact_dist = 0.2f, \
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.contact_bias = 0.03f, \
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.contact_spread = 0.2f, \
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.contact_thickness = 0.2f, \
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.diff_fac = 1.0f, \
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.spec_fac = 1.0f, \
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.volume_fac = 1.0f, \
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.att_dist = 40.0f, \
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.sun_angle = DEG2RADF(0.526f), \
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.area_spread = DEG2RADF(180.0f), \
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}
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/** \} */
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/* clang-format on */
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