c434782e3a
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2019 Blender Foundation. All rights reserved. */
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#include "usd_writer_camera.h"
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#include "usd_hierarchy_iterator.h"
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#include <pxr/usd/usdGeom/camera.h>
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#include <pxr/usd/usdGeom/tokens.h>
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#include "BKE_camera.h"
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#include "BLI_assert.h"
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#include "DNA_camera_types.h"
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#include "DNA_scene_types.h"
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namespace blender::io::usd {
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USDCameraWriter::USDCameraWriter(const USDExporterContext &ctx) : USDAbstractWriter(ctx)
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{
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}
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bool USDCameraWriter::is_supported(const HierarchyContext *context) const
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{
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Camera *camera = static_cast<Camera *>(context->object->data);
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return camera->type == CAM_PERSP;
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}
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static void camera_sensor_size_for_render(const Camera *camera,
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const struct RenderData *rd,
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float *r_sensor_x,
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float *r_sensor_y)
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{
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/* Compute the final image size in pixels. */
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float sizex = rd->xsch * rd->xasp;
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float sizey = rd->ysch * rd->yasp;
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int sensor_fit = BKE_camera_sensor_fit(camera->sensor_fit, sizex, sizey);
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switch (sensor_fit) {
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case CAMERA_SENSOR_FIT_HOR:
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*r_sensor_x = camera->sensor_x;
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*r_sensor_y = camera->sensor_x * sizey / sizex;
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break;
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case CAMERA_SENSOR_FIT_VERT:
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*r_sensor_x = camera->sensor_y * sizex / sizey;
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*r_sensor_y = camera->sensor_y;
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break;
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case CAMERA_SENSOR_FIT_AUTO:
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BLI_assert_msg(0, "Camera fit should be either horizontal or vertical");
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break;
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}
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}
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void USDCameraWriter::do_write(HierarchyContext &context)
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{
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pxr::UsdTimeCode timecode = get_export_time_code();
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pxr::UsdGeomCamera usd_camera = pxr::UsdGeomCamera::Define(usd_export_context_.stage,
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usd_export_context_.usd_path);
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Camera *camera = static_cast<Camera *>(context.object->data);
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Scene *scene = DEG_get_evaluated_scene(usd_export_context_.depsgraph);
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usd_camera.CreateProjectionAttr().Set(pxr::UsdGeomTokens->perspective);
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/* USD stores the focal length in "millimeters or tenths of world units", because at some point
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* they decided world units might be centimeters. Quite confusing, as the USD Viewer shows the
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* correct FoV when we write millimeters and not "tenths of world units".
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*/
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usd_camera.CreateFocalLengthAttr().Set(camera->lens, timecode);
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float aperture_x, aperture_y;
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camera_sensor_size_for_render(camera, &scene->r, &aperture_x, &aperture_y);
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float film_aspect = aperture_x / aperture_y;
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usd_camera.CreateHorizontalApertureAttr().Set(aperture_x, timecode);
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usd_camera.CreateVerticalApertureAttr().Set(aperture_y, timecode);
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usd_camera.CreateHorizontalApertureOffsetAttr().Set(aperture_x * camera->shiftx, timecode);
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usd_camera.CreateVerticalApertureOffsetAttr().Set(aperture_y * camera->shifty * film_aspect,
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timecode);
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usd_camera.CreateClippingRangeAttr().Set(
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pxr::VtValue(pxr::GfVec2f(camera->clip_start, camera->clip_end)), timecode);
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/* Write DoF-related attributes. */
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if (camera->dof.flag & CAM_DOF_ENABLED) {
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usd_camera.CreateFStopAttr().Set(camera->dof.aperture_fstop, timecode);
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float focus_distance = scene->unit.scale_length *
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BKE_camera_object_dof_distance(context.object);
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usd_camera.CreateFocusDistanceAttr().Set(focus_distance, timecode);
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}
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}
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} // namespace blender::io::usd
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