545 lines
19 KiB
C++
545 lines
19 KiB
C++
//----------------------------------------------------------------------------//
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// //
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// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
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// and distributed under the MIT License (MIT). //
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// //
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// Copyright (c) Guillaume Blanc //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software"), //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included in //
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// all copies or substantial portions of the Software. //
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// //
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
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// DEALINGS IN THE SOFTWARE. //
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// //
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//----------------------------------------------------------------------------//
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#include "framework/utils.h"
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#include <cassert>
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#include <limits>
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#include "ozz/base/maths/box.h"
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#include "ozz/base/maths/simd_math.h"
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#include "ozz/base/maths/simd_quaternion.h"
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#include "ozz/base/maths/soa_transform.h"
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#include "ozz/base/memory/allocator.h"
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#include "ozz/animation/runtime/animation.h"
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#include "ozz/animation/runtime/local_to_model_job.h"
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#include "ozz/animation/runtime/skeleton.h"
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#include "ozz/animation/runtime/track.h"
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#include "ozz/animation/offline/raw_skeleton.h"
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#include "ozz/geometry/runtime/skinning_job.h"
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#include "ozz/base/io/archive.h"
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#include "ozz/base/io/stream.h"
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#include "ozz/base/log.h"
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#include "framework/imgui.h"
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#include "framework/mesh.h"
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namespace ozz {
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namespace sample {
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PlaybackController::PlaybackController()
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: time_ratio_(0.f),
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previous_time_ratio_(0.f),
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playback_speed_(1.f),
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play_(true),
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loop_(true) {}
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void PlaybackController::Update(const animation::Animation& _animation,
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float _dt) {
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float new_time = time_ratio_;
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if (play_) {
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new_time = time_ratio_ + _dt * playback_speed_ / _animation.duration();
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}
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// Must be called even if time doesn't change, in order to update previous
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// frame time ratio. Uses set_time_ratio function in order to update
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// previous_time_ an wrap time value in the unit interval (depending on loop
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// mode).
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set_time_ratio(new_time);
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}
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void PlaybackController::set_time_ratio(float _ratio) {
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previous_time_ratio_ = time_ratio_;
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if (loop_) {
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// Wraps in the unit interval [0:1], even for negative values (the reason
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// for using floorf).
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time_ratio_ = _ratio - floorf(_ratio);
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} else {
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// Clamps in the unit interval [0:1].
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time_ratio_ = math::Clamp(0.f, _ratio, 1.f);
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}
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}
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// Gets animation current time.
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float PlaybackController::time_ratio() const { return time_ratio_; }
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// Gets animation time of last update.
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float PlaybackController::previous_time_ratio() const {
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return previous_time_ratio_;
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}
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void PlaybackController::Reset() {
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previous_time_ratio_ = time_ratio_ = 0.f;
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playback_speed_ = 1.f;
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play_ = true;
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}
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bool PlaybackController::OnGui(const animation::Animation& _animation,
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ImGui* _im_gui, bool _enabled,
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bool _allow_set_time) {
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bool time_changed = false;
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if (_im_gui->DoButton(play_ ? "Pause" : "Play", _enabled)) {
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play_ = !play_;
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}
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_im_gui->DoCheckBox("Loop", &loop_, _enabled);
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char szLabel[64];
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// Uses a local copy of time_ so that set_time is used to actually apply
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// changes. Otherwise previous time would be incorrect.
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float ratio = time_ratio();
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std::sprintf(szLabel, "Animation time: %.2f", ratio * _animation.duration());
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if (_im_gui->DoSlider(szLabel, 0.f, 1.f, &ratio, 1.f,
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_enabled && _allow_set_time)) {
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set_time_ratio(ratio);
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// Pause the time if slider as moved.
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play_ = false;
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time_changed = true;
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}
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std::sprintf(szLabel, "Playback speed: %.2f", playback_speed_);
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_im_gui->DoSlider(szLabel, -5.f, 5.f, &playback_speed_, 1.f, _enabled);
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// Allow to reset speed if it is not the default value.
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if (_im_gui->DoButton("Reset playback speed",
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playback_speed_ != 1.f && _enabled)) {
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playback_speed_ = 1.f;
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}
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return time_changed;
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}
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namespace {
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bool OnRawSkeletonJointGui(
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ozz::sample::ImGui* _im_gui,
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ozz::animation::offline::RawSkeleton::Joint::Children* _children,
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ozz::vector<bool>::iterator* _oc_state) {
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char txt[255];
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bool modified = false;
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for (size_t i = 0; i < _children->size(); ++i) {
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ozz::animation::offline::RawSkeleton::Joint& joint = _children->at(i);
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bool opened = *(*_oc_state);
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ozz::sample::ImGui::OpenClose oc(_im_gui, joint.name.c_str(), &opened);
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*(*_oc_state)++ = opened; // Updates state and increment for next joint.
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if (opened) {
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// Translation
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ozz::math::Float3& translation = joint.transform.translation;
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_im_gui->DoLabel("Translation");
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sprintf(txt, "x %.2g", translation.x);
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modified |= _im_gui->DoSlider(txt, -1.f, 1.f, &translation.x);
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sprintf(txt, "y %.2g", translation.y);
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modified |= _im_gui->DoSlider(txt, -1.f, 1.f, &translation.y);
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sprintf(txt, "z %.2g", translation.z);
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modified |= _im_gui->DoSlider(txt, -1.f, 1.f, &translation.z);
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// Rotation (in euler form)
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ozz::math::Quaternion& rotation = joint.transform.rotation;
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_im_gui->DoLabel("Rotation");
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ozz::math::Float3 euler = ToEuler(rotation) * ozz::math::kRadianToDegree;
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sprintf(txt, "x %.3g", euler.x);
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bool euler_modified = _im_gui->DoSlider(txt, -180.f, 180.f, &euler.x);
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sprintf(txt, "y %.3g", euler.y);
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euler_modified |= _im_gui->DoSlider(txt, -180.f, 180.f, &euler.y);
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sprintf(txt, "z %.3g", euler.z);
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euler_modified |= _im_gui->DoSlider(txt, -180.f, 180.f, &euler.z);
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if (euler_modified) {
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modified = true;
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ozz::math::Float3 euler_rad = euler * ozz::math::kDegreeToRadian;
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rotation = ozz::math::Quaternion::FromEuler(euler_rad.x, euler_rad.y,
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euler_rad.z);
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}
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// Scale (must be uniform and not 0)
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_im_gui->DoLabel("Scale");
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ozz::math::Float3& scale = joint.transform.scale;
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sprintf(txt, "%.2g", scale.x);
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if (_im_gui->DoSlider(txt, -1.f, 1.f, &scale.x)) {
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modified = true;
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scale.y = scale.z = scale.x = scale.x != 0.f ? scale.x : .01f;
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}
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// Recurse children
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modified |= OnRawSkeletonJointGui(_im_gui, &joint.children, _oc_state);
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}
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}
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return modified;
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}
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} // namespace
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bool RawSkeletonEditor::OnGui(animation::offline::RawSkeleton* _skeleton,
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ImGui* _im_gui) {
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open_close_states.resize(_skeleton->num_joints(), false);
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ozz::vector<bool>::iterator begin = open_close_states.begin();
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return OnRawSkeletonJointGui(_im_gui, &_skeleton->roots, &begin);
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}
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// Uses LocalToModelJob to compute skeleton model space posture, then forwards
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// to ComputePostureBounds
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void ComputeSkeletonBounds(const animation::Skeleton& _skeleton,
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math::Box* _bound) {
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using ozz::math::Float4x4;
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assert(_bound);
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// Set a default box.
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*_bound = ozz::math::Box();
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const int num_joints = _skeleton.num_joints();
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if (!num_joints) {
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return;
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}
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// Allocate matrix array, out of memory is handled by the LocalToModelJob.
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ozz::vector<ozz::math::Float4x4> models(num_joints);
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// Compute model space bind pose.
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ozz::animation::LocalToModelJob job;
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job.input = _skeleton.joint_bind_poses();
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job.output = make_span(models);
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job.skeleton = &_skeleton;
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if (job.Run()) {
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// Forwards to posture function.
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ComputePostureBounds(job.output, _bound);
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}
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}
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// Loop through matrices and collect min and max bounds.
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void ComputePostureBounds(ozz::span<const ozz::math::Float4x4> _matrices,
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math::Box* _bound) {
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assert(_bound);
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// Set a default box.
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*_bound = ozz::math::Box();
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if (_matrices.empty()) {
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return;
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}
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// Loops through matrices and stores min/max.
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// Matrices array cannot be empty, it was checked at the beginning of the
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// function.
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const ozz::math::Float4x4* current = _matrices.begin();
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math::SimdFloat4 min = current->cols[3];
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math::SimdFloat4 max = current->cols[3];
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++current;
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while (current < _matrices.end()) {
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min = math::Min(min, current->cols[3]);
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max = math::Max(max, current->cols[3]);
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++current;
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}
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// Stores in math::Box structure.
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math::Store3PtrU(min, &_bound->min.x);
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math::Store3PtrU(max, &_bound->max.x);
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return;
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}
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void MultiplySoATransformQuaternion(
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int _index, const ozz::math::SimdQuaternion& _quat,
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const ozz::span<ozz::math::SoaTransform>& _transforms) {
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assert(_index >= 0 && static_cast<size_t>(_index) < _transforms.size() * 4 &&
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"joint index out of bound.");
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// Convert soa to aos in order to perform quaternion multiplication, and gets
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// back to soa.
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ozz::math::SoaTransform& soa_transform_ref = _transforms[_index / 4];
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ozz::math::SimdQuaternion aos_quats[4];
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ozz::math::Transpose4x4(&soa_transform_ref.rotation.x, &aos_quats->xyzw);
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ozz::math::SimdQuaternion& aos_quat_ref = aos_quats[_index & 3];
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aos_quat_ref = aos_quat_ref * _quat;
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ozz::math::Transpose4x4(&aos_quats->xyzw, &soa_transform_ref.rotation.x);
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}
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bool LoadSkeleton(const char* _filename, ozz::animation::Skeleton* _skeleton) {
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assert(_filename && _skeleton);
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ozz::log::Out() << "Loading skeleton archive " << _filename << "."
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<< std::endl;
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ozz::io::File file(_filename, "rb");
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if (!file.opened()) {
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ozz::log::Err() << "Failed to open skeleton file " << _filename << "."
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<< std::endl;
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return false;
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}
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ozz::io::IArchive archive(&file);
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if (!archive.TestTag<ozz::animation::Skeleton>()) {
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ozz::log::Err() << "Failed to load skeleton instance from file "
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<< _filename << "." << std::endl;
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return false;
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}
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// Once the tag is validated, reading cannot fail.
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archive >> *_skeleton;
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return true;
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}
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bool LoadAnimation(const char* _filename,
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ozz::animation::Animation* _animation) {
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assert(_filename && _animation);
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ozz::log::Out() << "Loading animation archive: " << _filename << "."
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<< std::endl;
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ozz::io::File file(_filename, "rb");
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if (!file.opened()) {
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ozz::log::Err() << "Failed to open animation file " << _filename << "."
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<< std::endl;
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return false;
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}
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ozz::io::IArchive archive(&file);
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if (!archive.TestTag<ozz::animation::Animation>()) {
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ozz::log::Err() << "Failed to load animation instance from file "
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<< _filename << "." << std::endl;
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return false;
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}
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// Once the tag is validated, reading cannot fail.
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archive >> *_animation;
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return true;
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}
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namespace {
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template <typename _Track>
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bool LoadTrackImpl(const char* _filename, _Track* _track) {
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assert(_filename && _track);
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ozz::log::Out() << "Loading track archive: " << _filename << "." << std::endl;
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ozz::io::File file(_filename, "rb");
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if (!file.opened()) {
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ozz::log::Err() << "Failed to open track file " << _filename << "."
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<< std::endl;
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return false;
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}
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ozz::io::IArchive archive(&file);
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if (!archive.TestTag<_Track>()) {
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ozz::log::Err() << "Failed to load float track instance from file "
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<< _filename << "." << std::endl;
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return false;
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}
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// Once the tag is validated, reading cannot fail.
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archive >> *_track;
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return true;
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}
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} // namespace
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bool LoadTrack(const char* _filename, ozz::animation::FloatTrack* _track) {
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return LoadTrackImpl(_filename, _track);
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}
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bool LoadTrack(const char* _filename, ozz::animation::Float2Track* _track) {
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return LoadTrackImpl(_filename, _track);
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}
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bool LoadTrack(const char* _filename, ozz::animation::Float3Track* _track) {
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return LoadTrackImpl(_filename, _track);
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}
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bool LoadTrack(const char* _filename, ozz::animation::Float4Track* _track) {
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return LoadTrackImpl(_filename, _track);
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}
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bool LoadTrack(const char* _filename, ozz::animation::QuaternionTrack* _track) {
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return LoadTrackImpl(_filename, _track);
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}
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bool LoadMesh(const char* _filename, ozz::sample::Mesh* _mesh) {
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assert(_filename && _mesh);
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ozz::log::Out() << "Loading mesh archive: " << _filename << "." << std::endl;
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ozz::io::File file(_filename, "rb");
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if (!file.opened()) {
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ozz::log::Err() << "Failed to open mesh file " << _filename << "."
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<< std::endl;
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return false;
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}
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ozz::io::IArchive archive(&file);
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if (!archive.TestTag<ozz::sample::Mesh>()) {
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ozz::log::Err() << "Failed to load mesh instance from file " << _filename
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<< "." << std::endl;
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return false;
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}
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// Once the tag is validated, reading cannot fail.
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archive >> *_mesh;
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return true;
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}
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bool LoadMeshes(const char* _filename,
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ozz::vector<ozz::sample::Mesh>* _meshes) {
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assert(_filename && _meshes);
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ozz::log::Out() << "Loading meshes archive: " << _filename << "."
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<< std::endl;
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ozz::io::File file(_filename, "rb");
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if (!file.opened()) {
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ozz::log::Err() << "Failed to open mesh file " << _filename << "."
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<< std::endl;
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return false;
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}
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ozz::io::IArchive archive(&file);
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while (archive.TestTag<ozz::sample::Mesh>()) {
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_meshes->resize(_meshes->size() + 1);
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archive >> _meshes->back();
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}
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return true;
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}
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namespace {
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// Moller–Trumbore intersection algorithm
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// https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
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bool RayIntersectsTriangle(const ozz::math::Float3& _ray_origin,
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const ozz::math::Float3& _ray_direction,
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const ozz::math::Float3& _p0,
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const ozz::math::Float3& _p1,
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const ozz::math::Float3& _p2,
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ozz::math::Float3* _intersect,
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ozz::math::Float3* _normal) {
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const float kEpsilon = 0.0000001f;
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const ozz::math::Float3 edge1 = _p1 - _p0;
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const ozz::math::Float3 edge2 = _p2 - _p0;
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const ozz::math::Float3 h = Cross(_ray_direction, edge2);
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const float a = Dot(edge1, h);
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if (a > -kEpsilon && a < kEpsilon) {
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return false; // This ray is parallel to this triangle.
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}
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const float inv_a = 1.f / a;
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const ozz::math::Float3 s = _ray_origin - _p0;
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const float u = Dot(s, h) * inv_a;
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if (u < 0.f || u > 1.f) {
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return false;
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}
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const ozz::math::Float3 q = Cross(s, edge1);
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const float v = ozz::math::Dot(_ray_direction, q) * inv_a;
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if (v < 0.f || u + v > 1.f) {
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return false;
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}
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// At this stage we can compute t to find out where the intersection point is
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// on the line.
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const float t = Dot(edge2, q) * inv_a;
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if (t > kEpsilon) { // Ray intersection
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*_intersect = _ray_origin + _ray_direction * t;
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*_normal = Normalize(Cross(edge1, edge2));
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return true;
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} else { // This means that there is a line intersection but not a ray
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// intersection.
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return false;
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}
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}
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} // namespace
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bool RayIntersectsMesh(const ozz::math::Float3& _ray_origin,
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const ozz::math::Float3& _ray_direction,
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const ozz::sample::Mesh& _mesh,
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ozz::math::Float3* _intersect,
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ozz::math::Float3* _normal) {
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assert(_mesh.parts.size() == 1 && !_mesh.skinned());
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bool intersected = false;
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ozz::math::Float3 intersect, normal;
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||
const float* vertices = array_begin(_mesh.parts[0].positions);
|
||
const uint16_t* indices = array_begin(_mesh.triangle_indices);
|
||
for (int i = 0; i < _mesh.triangle_index_count(); i += 3) {
|
||
const float* pf0 = vertices + indices[i + 0] * 3;
|
||
const float* pf1 = vertices + indices[i + 1] * 3;
|
||
const float* pf2 = vertices + indices[i + 2] * 3;
|
||
ozz::math::Float3 lcl_intersect, lcl_normal;
|
||
if (RayIntersectsTriangle(_ray_origin, _ray_direction,
|
||
ozz::math::Float3(pf0[0], pf0[1], pf0[2]),
|
||
ozz::math::Float3(pf1[0], pf1[1], pf1[2]),
|
||
ozz::math::Float3(pf2[0], pf2[1], pf2[2]),
|
||
&lcl_intersect, &lcl_normal)) {
|
||
// Is it closer to start point than the previous intersection.
|
||
if (!intersected || LengthSqr(lcl_intersect - _ray_origin) <
|
||
LengthSqr(intersect - _ray_origin)) {
|
||
intersect = lcl_intersect;
|
||
normal = lcl_normal;
|
||
}
|
||
intersected = true;
|
||
}
|
||
}
|
||
|
||
// Copy output
|
||
if (intersected) {
|
||
if (_intersect) {
|
||
*_intersect = intersect;
|
||
}
|
||
if (_normal) {
|
||
*_normal = normal;
|
||
}
|
||
}
|
||
return intersected;
|
||
}
|
||
|
||
bool RayIntersectsMeshes(const ozz::math::Float3& _ray_origin,
|
||
const ozz::math::Float3& _ray_direction,
|
||
const ozz::span<const ozz::sample::Mesh>& _meshes,
|
||
ozz::math::Float3* _intersect,
|
||
ozz::math::Float3* _normal) {
|
||
bool intersected = false;
|
||
ozz::math::Float3 intersect, normal;
|
||
for (size_t i = 0; i < _meshes.size(); ++i) {
|
||
ozz::math::Float3 lcl_intersect, lcl_normal;
|
||
if (RayIntersectsMesh(_ray_origin, _ray_direction, _meshes[i],
|
||
&lcl_intersect, &lcl_normal)) {
|
||
// Is it closer to start point than the previous intersection.
|
||
if (!intersected || LengthSqr(lcl_intersect - _ray_origin) <
|
||
LengthSqr(intersect - _ray_origin)) {
|
||
intersect = lcl_intersect;
|
||
normal = lcl_normal;
|
||
}
|
||
intersected = true;
|
||
}
|
||
}
|
||
|
||
// Copy output
|
||
if (intersected) {
|
||
if (_intersect) {
|
||
*_intersect = intersect;
|
||
}
|
||
if (_normal) {
|
||
*_normal = normal;
|
||
}
|
||
}
|
||
return intersected;
|
||
}
|
||
} // namespace sample
|
||
} // namespace ozz
|