diff options
Diffstat (limited to 'source/blender/io/usd/intern/usd_reader_light.cc')
| -rw-r--r-- | source/blender/io/usd/intern/usd_reader_light.cc | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/source/blender/io/usd/intern/usd_reader_light.cc b/source/blender/io/usd/intern/usd_reader_light.cc new file mode 100644 index 00000000000..fda0c17968a --- /dev/null +++ b/source/blender/io/usd/intern/usd_reader_light.cc @@ -0,0 +1,252 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2021 Tangent Animation. + * All rights reserved. + */ + +#include "usd_reader_light.h" + +#include "BKE_light.h" +#include "BKE_object.h" + +#include "DNA_light_types.h" +#include "DNA_object_types.h" + +#include <pxr/usd/usdLux/light.h> + +#include <pxr/usd/usdLux/diskLight.h> +#include <pxr/usd/usdLux/distantLight.h> +#include <pxr/usd/usdLux/rectLight.h> +#include <pxr/usd/usdLux/shapingAPI.h> +#include <pxr/usd/usdLux/sphereLight.h> + +#include <iostream> + +namespace blender::io::usd { + +void USDLightReader::create_object(Main *bmain, const double /* motionSampleTime */) +{ + Light *blight = static_cast<Light *>(BKE_light_add(bmain, name_.c_str())); + + object_ = BKE_object_add_only_object(bmain, OB_LAMP, name_.c_str()); + object_->data = blight; +} + +void USDLightReader::read_object_data(Main *bmain, const double motionSampleTime) +{ + Light *blight = (Light *)object_->data; + + if (blight == nullptr) { + return; + } + + if (!prim_) { + return; + } + + pxr::UsdLuxLight light_prim(prim_); + + if (!light_prim) { + return; + } + + pxr::UsdLuxShapingAPI shaping_api(light_prim); + + /* Set light type. */ + + if (prim_.IsA<pxr::UsdLuxDiskLight>()) { + blight->type = LA_AREA; + blight->area_shape = LA_AREA_DISK; + /* Ellipse lights are not currently supported */ + } + else if (prim_.IsA<pxr::UsdLuxRectLight>()) { + blight->type = LA_AREA; + blight->area_shape = LA_AREA_RECT; + } + else if (prim_.IsA<pxr::UsdLuxSphereLight>()) { + blight->type = LA_LOCAL; + + if (shaping_api && shaping_api.GetShapingConeAngleAttr().IsAuthored()) { + blight->type = LA_SPOT; + } + } + else if (prim_.IsA<pxr::UsdLuxDistantLight>()) { + blight->type = LA_SUN; + } + + /* Set light values. */ + + if (pxr::UsdAttribute intensity_attr = light_prim.GetIntensityAttr()) { + float intensity = 0.0f; + if (intensity_attr.Get(&intensity, motionSampleTime)) { + blight->energy = intensity * this->import_params_.light_intensity_scale; + } + } + + /* TODO(makowalsk): Not currently supported. */ +#if 0 + pxr::VtValue exposure; + light_prim.GetExposureAttr().Get(&exposure, motionSampleTime); +#endif + + /* TODO(makowalsk): Not currently supported */ +#if 0 + pxr::VtValue diffuse; + light_prim.GetDiffuseAttr().Get(&diffuse, motionSampleTime); +#endif + + if (pxr::UsdAttribute spec_attr = light_prim.GetSpecularAttr()) { + float spec = 0.0f; + if (spec_attr.Get(&spec, motionSampleTime)) { + blight->spec_fac = spec; + } + } + + if (pxr::UsdAttribute color_attr = light_prim.GetColorAttr()) { + pxr::GfVec3f color; + if (color_attr.Get(&color, motionSampleTime)) { + blight->r = color[0]; + blight->g = color[1]; + blight->b = color[2]; + } + } + + /* TODO(makowalski): Not currently supported. */ +#if 0 + pxr::VtValue use_color_temp; + light_prim.GetEnableColorTemperatureAttr().Get(&use_color_temp, motionSampleTime); +#endif + + /* TODO(makowalski): Not currently supported. */ +#if 0 + pxr::VtValue color_temp; + light_prim.GetColorTemperatureAttr().Get(&color_temp, motionSampleTime); +#endif + + switch (blight->type) { + case LA_AREA: + if (blight->area_shape == LA_AREA_RECT && prim_.IsA<pxr::UsdLuxRectLight>()) { + + pxr::UsdLuxRectLight rect_light(prim_); + + if (!rect_light) { + break; + } + + if (pxr::UsdAttribute width_attr = rect_light.GetWidthAttr()) { + float width = 0.0f; + if (width_attr.Get(&width, motionSampleTime)) { + blight->area_size = width; + } + } + + if (pxr::UsdAttribute height_attr = rect_light.GetHeightAttr()) { + float height = 0.0f; + if (height_attr.Get(&height, motionSampleTime)) { + blight->area_sizey = height; + } + } + } + else if (blight->area_shape == LA_AREA_DISK && prim_.IsA<pxr::UsdLuxDiskLight>()) { + + pxr::UsdLuxDiskLight disk_light(prim_); + + if (!disk_light) { + break; + } + + if (pxr::UsdAttribute radius_attr = disk_light.GetRadiusAttr()) { + float radius = 0.0f; + if (radius_attr.Get(&radius, motionSampleTime)) { + blight->area_size = radius * 2.0f; + } + } + } + break; + case LA_LOCAL: + if (prim_.IsA<pxr::UsdLuxSphereLight>()) { + + pxr::UsdLuxSphereLight sphere_light(prim_); + + if (!sphere_light) { + break; + } + + if (pxr::UsdAttribute radius_attr = sphere_light.GetRadiusAttr()) { + float radius = 0.0f; + if (radius_attr.Get(&radius, motionSampleTime)) { + blight->area_size = radius; + } + } + } + break; + case LA_SPOT: + if (prim_.IsA<pxr::UsdLuxSphereLight>()) { + + pxr::UsdLuxSphereLight sphere_light(prim_); + + if (!sphere_light) { + break; + } + + if (pxr::UsdAttribute radius_attr = sphere_light.GetRadiusAttr()) { + float radius = 0.0f; + if (radius_attr.Get(&radius, motionSampleTime)) { + blight->area_size = radius; + } + } + + if (!shaping_api) { + break; + } + + if (pxr::UsdAttribute cone_angle_attr = shaping_api.GetShapingConeAngleAttr()) { + float cone_angle = 0.0f; + if (cone_angle_attr.Get(&cone_angle, motionSampleTime)) { + blight->spotsize = cone_angle * ((float)M_PI / 180.0f) * 2.0f; + } + } + + if (pxr::UsdAttribute cone_softness_attr = shaping_api.GetShapingConeSoftnessAttr()) { + float cone_softness = 0.0f; + if (cone_softness_attr.Get(&cone_softness, motionSampleTime)) { + blight->spotblend = cone_softness; + } + } + } + break; + case LA_SUN: + if (prim_.IsA<pxr::UsdLuxDistantLight>()) { + pxr::UsdLuxDistantLight distant_light(prim_); + + if (!distant_light) { + break; + } + + if (pxr::UsdAttribute angle_attr = distant_light.GetAngleAttr()) { + float angle = 0.0f; + if (angle_attr.Get(&angle, motionSampleTime)) { + blight->sun_angle = angle * (float)M_PI / 180.0f; + } + } + } + break; + } + + USDXformReader::read_object_data(bmain, motionSampleTime); +} + +} // namespace blender::io::usd |