bb9d5cdaad
When enabled, this normalize the strength by the light area, to keep the total output the same regardless of shape or size. This is the existing behavior. This is supported in Cycles, EEVEE, Hydra, USD, COLLADA. For add-ons, an API function to compute the area is added for conversion, in case there is no native support for normalization. area = light.area(matrix_world=ob.matrix_world) Co-authored-by: Brecht Van Lommel <brecht@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/136958
113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
/* SPDX-FileCopyrightText: 2010-2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup collada
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*/
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#include <string>
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#include "COLLADASWColor.h"
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#include "COLLADASWLight.h"
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#include "DNA_light_types.h"
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#include "LightExporter.h"
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#include "collada_internal.h"
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#include "BKE_light.h"
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template<class Functor>
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void forEachLightObjectInExportSet(Scene *sce, Functor &f, LinkNode *export_set)
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{
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LinkNode *node;
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for (node = export_set; node; node = node->next) {
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Object *ob = (Object *)node->link;
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if (ob->type == OB_LAMP && ob->data) {
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f(ob);
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}
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}
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}
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LightsExporter::LightsExporter(COLLADASW::StreamWriter *sw, BCExportSettings &export_settings)
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: COLLADASW::LibraryLights(sw), export_settings(export_settings)
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{
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}
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void LightsExporter::exportLights(Scene *sce)
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{
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openLibrary();
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forEachLightObjectInExportSet(sce, *this, this->export_settings.get_export_set());
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closeLibrary();
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}
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void LightsExporter::operator()(Object *ob)
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{
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Light *la = (Light *)ob->data;
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std::string la_id(get_light_id(ob));
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std::string la_name(id_name(la));
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blender::float3 color = BKE_light_power(*la) * BKE_light_color(*la);
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if (la->mode & LA_UNNORMALIZED) {
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color *= BKE_light_area(*la, ob->runtime->object_to_world);
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}
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COLLADASW::Color col(color[0], color[1], color[2]);
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/* sun */
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if (la->type == LA_SUN) {
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COLLADASW::DirectionalLight cla(mSW, la_id, la_name);
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cla.setColor(col, false, "color");
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exportBlenderProfile(cla, la);
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addLight(cla);
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}
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/* spot */
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else if (la->type == LA_SPOT) {
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COLLADASW::SpotLight cla(mSW, la_id, la_name);
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cla.setColor(col, false, "color");
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cla.setFallOffAngle(RAD2DEGF(la->spotsize), false, "fall_off_angle");
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cla.setFallOffExponent(la->spotblend, false, "fall_off_exponent");
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exportBlenderProfile(cla, la);
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addLight(cla);
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}
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/* lamp */
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else if (la->type == LA_LOCAL) {
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COLLADASW::PointLight cla(mSW, la_id, la_name);
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cla.setColor(col, false, "color");
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exportBlenderProfile(cla, la);
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addLight(cla);
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}
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/* area light is not supported
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* it will be exported as a local lamp */
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else {
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COLLADASW::PointLight cla(mSW, la_id, la_name);
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cla.setColor(col, false, "color");
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exportBlenderProfile(cla, la);
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addLight(cla);
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}
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}
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bool LightsExporter::exportBlenderProfile(COLLADASW::Light &cla, Light *la)
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{
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cla.addExtraTechniqueParameter("blender", "type", la->type);
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cla.addExtraTechniqueParameter("blender", "flag", la->flag);
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cla.addExtraTechniqueParameter("blender", "mode", la->mode);
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cla.addExtraTechniqueParameter("blender", "red", la->r);
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cla.addExtraTechniqueParameter("blender", "green", la->g);
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cla.addExtraTechniqueParameter("blender", "blue", la->b);
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cla.addExtraTechniqueParameter("blender", "energy", la->energy, "blender_energy");
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cla.addExtraTechniqueParameter("blender", "spotsize", RAD2DEGF(la->spotsize));
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cla.addExtraTechniqueParameter("blender", "spotblend", la->spotblend);
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cla.addExtraTechniqueParameter("blender", "clipsta", la->clipsta);
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cla.addExtraTechniqueParameter("blender", "clipend", la->att_dist);
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cla.addExtraTechniqueParameter("blender", "radius", la->radius);
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cla.addExtraTechniqueParameter("blender", "area_shape", la->area_shape);
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cla.addExtraTechniqueParameter("blender", "area_size", la->area_size);
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cla.addExtraTechniqueParameter("blender", "area_sizey", la->area_sizey);
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cla.addExtraTechniqueParameter("blender", "area_sizez", la->area_sizez);
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return true;
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}
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