406 lines
15 KiB
C++
406 lines
15 KiB
C++
//----------------------------------------------------------------------------//
|
|
// //
|
|
// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
|
|
// and distributed under the MIT License (MIT). //
|
|
// //
|
|
// Copyright (c) Guillaume Blanc //
|
|
// //
|
|
// Permission is hereby granted, free of charge, to any person obtaining a //
|
|
// copy of this software and associated documentation files (the "Software"), //
|
|
// to deal in the Software without restriction, including without limitation //
|
|
// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
|
|
// and/or sell copies of the Software, and to permit persons to whom the //
|
|
// Software is furnished to do so, subject to the following conditions: //
|
|
// //
|
|
// The above copyright notice and this permission notice shall be included in //
|
|
// all copies or substantial portions of the Software. //
|
|
// //
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
|
|
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
|
|
// DEALINGS IN THE SOFTWARE. //
|
|
// //
|
|
//----------------------------------------------------------------------------//
|
|
|
|
#include "ozz/animation/runtime/animation.h"
|
|
#include "ozz/animation/runtime/blending_job.h"
|
|
#include "ozz/animation/runtime/local_to_model_job.h"
|
|
#include "ozz/animation/runtime/sampling_job.h"
|
|
#include "ozz/animation/runtime/skeleton.h"
|
|
#include "ozz/animation/runtime/skeleton_utils.h"
|
|
|
|
#include "ozz/base/log.h"
|
|
|
|
#include "ozz/base/containers/vector.h"
|
|
|
|
#include "ozz/base/maths/simd_math.h"
|
|
#include "ozz/base/maths/soa_transform.h"
|
|
#include "ozz/base/maths/vec_float.h"
|
|
|
|
#include "ozz/options/options.h"
|
|
|
|
#include "framework/application.h"
|
|
#include "framework/imgui.h"
|
|
#include "framework/renderer.h"
|
|
#include "framework/utils.h"
|
|
|
|
#include <cstring>
|
|
|
|
// Skeleton archive can be specified as an option.
|
|
OZZ_OPTIONS_DECLARE_STRING(skeleton,
|
|
"Path to the skeleton (ozz archive format).",
|
|
"media/skeleton.ozz", false)
|
|
|
|
// Lower body animation archive can be specified as an option.
|
|
OZZ_OPTIONS_DECLARE_STRING(
|
|
lower_body_animation,
|
|
"Path to the lower body animation(ozz archive format).",
|
|
"media/animation_base.ozz", false)
|
|
|
|
// Upper body animation archive can be specified as an option.
|
|
OZZ_OPTIONS_DECLARE_STRING(
|
|
upper_body_animation,
|
|
"Path to the upper body animation (ozz archive format).",
|
|
"media/animation_partial.ozz", false)
|
|
|
|
class PartialBlendSampleApplication : public ozz::sample::Application {
|
|
public:
|
|
PartialBlendSampleApplication()
|
|
: upper_body_root_(0),
|
|
threshold_(ozz::animation::BlendingJob().threshold) {}
|
|
|
|
protected:
|
|
// Updates current animation time and skeleton pose.
|
|
virtual bool OnUpdate(float _dt, float) {
|
|
// Updates and samples both animations to their respective local space
|
|
// transform buffers.
|
|
for (int i = 0; i < kNumLayers; ++i) {
|
|
Sampler& sampler = samplers_[i];
|
|
|
|
// Updates animations time.
|
|
sampler.controller.Update(sampler.animation, _dt);
|
|
|
|
// Setup sampling job.
|
|
ozz::animation::SamplingJob sampling_job;
|
|
sampling_job.animation = &sampler.animation;
|
|
sampling_job.cache = &sampler.cache;
|
|
sampling_job.ratio = sampler.controller.time_ratio();
|
|
sampling_job.output = make_span(sampler.locals);
|
|
|
|
// Samples animation.
|
|
if (!sampling_job.Run()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Blends animations.
|
|
// Blends the local spaces transforms computed by sampling all animations
|
|
// (1st stage just above), and outputs the result to the local space
|
|
// transform buffer blended_locals_
|
|
|
|
// Prepares blending layers.
|
|
ozz::animation::BlendingJob::Layer layers[kNumLayers];
|
|
for (int i = 0; i < kNumLayers; ++i) {
|
|
layers[i].transform = make_span(samplers_[i].locals);
|
|
layers[i].weight = samplers_[i].weight_setting;
|
|
|
|
// Set per-joint weights for the partially blended layer.
|
|
layers[i].joint_weights = make_span(samplers_[i].joint_weights);
|
|
}
|
|
|
|
// Setups blending job.
|
|
ozz::animation::BlendingJob blend_job;
|
|
blend_job.threshold = threshold_;
|
|
blend_job.layers = layers;
|
|
blend_job.bind_pose = skeleton_.joint_bind_poses();
|
|
blend_job.output = make_span(blended_locals_);
|
|
|
|
// Blends.
|
|
if (!blend_job.Run()) {
|
|
return false;
|
|
}
|
|
|
|
// Converts from local space to model space matrices.
|
|
// Gets the output of the blending stage, and converts it to model space.
|
|
|
|
// Setup local-to-model conversion job.
|
|
ozz::animation::LocalToModelJob ltm_job;
|
|
ltm_job.skeleton = &skeleton_;
|
|
ltm_job.input = make_span(blended_locals_);
|
|
ltm_job.output = make_span(models_);
|
|
|
|
// Run ltm job.
|
|
if (!ltm_job.Run()) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Samples animation, transforms to model space and renders.
|
|
virtual bool OnDisplay(ozz::sample::Renderer* _renderer) {
|
|
return _renderer->DrawPosture(skeleton_, make_span(models_),
|
|
ozz::math::Float4x4::identity());
|
|
}
|
|
|
|
virtual bool OnInitialize() {
|
|
// Reading skeleton.
|
|
if (!ozz::sample::LoadSkeleton(OPTIONS_skeleton, &skeleton_)) {
|
|
return false;
|
|
}
|
|
const int num_joints = skeleton_.num_joints();
|
|
const int num_soa_joints = skeleton_.num_soa_joints();
|
|
|
|
// Reading animations.
|
|
const char* filenames[] = {OPTIONS_lower_body_animation,
|
|
OPTIONS_upper_body_animation};
|
|
for (int i = 0; i < kNumLayers; ++i) {
|
|
Sampler& sampler = samplers_[i];
|
|
|
|
if (!ozz::sample::LoadAnimation(filenames[i], &sampler.animation)) {
|
|
return false;
|
|
}
|
|
|
|
// Allocates sampler runtime buffers.
|
|
sampler.locals.resize(num_soa_joints);
|
|
|
|
// Allocates per-joint weights used for the partial animation. Note that
|
|
// this is a Soa structure.
|
|
sampler.joint_weights.resize(num_soa_joints);
|
|
|
|
// Allocates a cache that matches animation requirements.
|
|
sampler.cache.Resize(num_joints);
|
|
}
|
|
|
|
// Default weight settings.
|
|
Sampler& lower_body_sampler = samplers_[kLowerBody];
|
|
lower_body_sampler.weight_setting = 1.f;
|
|
lower_body_sampler.joint_weight_setting = 0.f;
|
|
|
|
Sampler& upper_body_sampler = samplers_[kUpperBody];
|
|
upper_body_sampler.weight_setting = 1.f;
|
|
upper_body_sampler.joint_weight_setting = 1.f;
|
|
|
|
// Allocates local space runtime buffers of blended data.
|
|
blended_locals_.resize(num_soa_joints);
|
|
|
|
// Allocates model space runtime buffers of blended data.
|
|
models_.resize(num_joints);
|
|
|
|
// Finds the "Spine1" joint in the joint hierarchy.
|
|
for (int i = 0; i < num_joints; ++i) {
|
|
if (std::strstr(skeleton_.joint_names()[i], "Spine1")) {
|
|
upper_body_root_ = i;
|
|
break;
|
|
}
|
|
}
|
|
SetupPerJointWeights();
|
|
|
|
return true;
|
|
}
|
|
|
|
// Helper functor used to set weights while traversing joints hierarchy.
|
|
struct WeightSetupIterator {
|
|
WeightSetupIterator(ozz::vector<ozz::math::SimdFloat4>* _weights,
|
|
float _weight_setting)
|
|
: weights(_weights), weight_setting(_weight_setting) {}
|
|
void operator()(int _joint, int) {
|
|
ozz::math::SimdFloat4& soa_weight = weights->at(_joint / 4);
|
|
soa_weight = ozz::math::SetI(
|
|
soa_weight, ozz::math::simd_float4::Load1(weight_setting),
|
|
_joint % 4);
|
|
}
|
|
ozz::vector<ozz::math::SimdFloat4>* weights;
|
|
float weight_setting;
|
|
};
|
|
|
|
void SetupPerJointWeights() {
|
|
// Setup partial animation mask. This mask is defined by a weight_setting
|
|
// assigned to each joint of the hierarchy. Joint to disable are set to a
|
|
// weight_setting of 0.f, and enabled joints are set to 1.f.
|
|
// Per-joint weights of lower and upper body layers have opposed values
|
|
// (weight_setting and 1 - weight_setting) in order for a layer to select
|
|
// joints that are rejected by the other layer.
|
|
Sampler& lower_body_sampler = samplers_[kLowerBody];
|
|
Sampler& upper_body_sampler = samplers_[kUpperBody];
|
|
|
|
// Disables all joints: set all weights to 0.
|
|
for (int i = 0; i < skeleton_.num_soa_joints(); ++i) {
|
|
lower_body_sampler.joint_weights[i] = ozz::math::simd_float4::one();
|
|
upper_body_sampler.joint_weights[i] = ozz::math::simd_float4::zero();
|
|
}
|
|
|
|
// Sets the weight_setting of all the joints children of the lower and upper
|
|
// body weights. Note that they are stored in SoA format.
|
|
WeightSetupIterator lower_it(&lower_body_sampler.joint_weights,
|
|
lower_body_sampler.joint_weight_setting);
|
|
ozz::animation::IterateJointsDF(skeleton_, lower_it, upper_body_root_);
|
|
|
|
WeightSetupIterator upper_it(&upper_body_sampler.joint_weights,
|
|
upper_body_sampler.joint_weight_setting);
|
|
ozz::animation::IterateJointsDF(skeleton_, upper_it, upper_body_root_);
|
|
}
|
|
|
|
virtual void OnDestroy() {}
|
|
|
|
virtual bool OnGui(ozz::sample::ImGui* _im_gui) {
|
|
// Exposes blending parameters.
|
|
{
|
|
static bool open = true;
|
|
ozz::sample::ImGui::OpenClose oc(_im_gui, "Blending parameters", &open);
|
|
if (open) {
|
|
char label[64];
|
|
|
|
static bool automatic = true;
|
|
_im_gui->DoCheckBox("Use automatic blending settings", &automatic);
|
|
|
|
static float coeff = 1.f; // All power to the partial animation.
|
|
std::sprintf(label, "Upper body weight: %.2f", coeff);
|
|
_im_gui->DoSlider(label, 0.f, 1.f, &coeff, 1.f, automatic);
|
|
|
|
Sampler& lower_body_sampler = samplers_[kLowerBody];
|
|
Sampler& upper_body_sampler = samplers_[kUpperBody];
|
|
|
|
if (automatic) {
|
|
// Blending values are forced when "automatic" mode is selected.
|
|
lower_body_sampler.weight_setting = 1.f;
|
|
lower_body_sampler.joint_weight_setting = 1.f - coeff;
|
|
upper_body_sampler.weight_setting = 1.f;
|
|
upper_body_sampler.joint_weight_setting = coeff;
|
|
}
|
|
|
|
_im_gui->DoLabel("Manual settings:");
|
|
_im_gui->DoLabel("Lower body layer:");
|
|
std::sprintf(label, "Layer weight: %.2f",
|
|
lower_body_sampler.weight_setting);
|
|
_im_gui->DoSlider(label, 0.f, 1.f, &lower_body_sampler.weight_setting,
|
|
1.f, !automatic);
|
|
std::sprintf(label, "Joints weight: %.2f",
|
|
lower_body_sampler.joint_weight_setting);
|
|
_im_gui->DoSlider(label, 0.f, 1.f,
|
|
&lower_body_sampler.joint_weight_setting, 1.f,
|
|
!automatic);
|
|
_im_gui->DoLabel("Upper body layer:");
|
|
std::sprintf(label, "Layer weight: %.2f",
|
|
upper_body_sampler.weight_setting);
|
|
_im_gui->DoSlider(label, 0.f, 1.f, &upper_body_sampler.weight_setting,
|
|
1.f, !automatic);
|
|
std::sprintf(label, "Joints weight: %.2f",
|
|
upper_body_sampler.joint_weight_setting);
|
|
_im_gui->DoSlider(label, 0.f, 1.f,
|
|
&upper_body_sampler.joint_weight_setting, 1.f,
|
|
!automatic);
|
|
_im_gui->DoLabel("Global settings:");
|
|
std::sprintf(label, "Threshold: %.2f", threshold_);
|
|
_im_gui->DoSlider(label, .01f, 1.f, &threshold_);
|
|
|
|
SetupPerJointWeights();
|
|
}
|
|
}
|
|
// Exposes selection of the root of the partial blending hierarchy.
|
|
{
|
|
static bool open = true;
|
|
ozz::sample::ImGui::OpenClose oc(_im_gui, "Root", &open);
|
|
if (open && skeleton_.num_joints() != 0) {
|
|
_im_gui->DoLabel("Root of the upper body hierarchy:",
|
|
ozz::sample::ImGui::kLeft, false);
|
|
char label[64];
|
|
std::sprintf(label, "%s (%d)",
|
|
skeleton_.joint_names()[upper_body_root_],
|
|
upper_body_root_);
|
|
if (_im_gui->DoSlider(label, 0, skeleton_.num_joints() - 1,
|
|
&upper_body_root_)) {
|
|
SetupPerJointWeights();
|
|
}
|
|
}
|
|
}
|
|
// Exposes animations runtime playback controls.
|
|
{
|
|
static bool oc_open = true;
|
|
ozz::sample::ImGui::OpenClose oc(_im_gui, "Animation control", &oc_open);
|
|
if (oc_open) {
|
|
static bool open[kNumLayers] = {true, true};
|
|
const char* oc_names[kNumLayers] = {"Lower body animation",
|
|
"Upper body animation"};
|
|
for (int i = 0; i < kNumLayers; ++i) {
|
|
Sampler& sampler = samplers_[i];
|
|
ozz::sample::ImGui::OpenClose loc(_im_gui, oc_names[i], nullptr);
|
|
if (open[i]) {
|
|
sampler.controller.OnGui(sampler.animation, _im_gui);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
virtual void GetSceneBounds(ozz::math::Box* _bound) const {
|
|
ozz::sample::ComputePostureBounds(make_span(models_), _bound);
|
|
}
|
|
|
|
private:
|
|
// Runtime skeleton.
|
|
ozz::animation::Skeleton skeleton_;
|
|
|
|
// The number of layers to blend.
|
|
enum {
|
|
kLowerBody = 0,
|
|
kUpperBody = 1,
|
|
kNumLayers = 2,
|
|
};
|
|
|
|
// Sampler structure contains all the data required to sample a single
|
|
// animation.
|
|
struct Sampler {
|
|
// Constructor, default initialization.
|
|
Sampler() : weight_setting(1.f), joint_weight_setting(1.f) {}
|
|
|
|
// Playback animation controller. This is a utility class that helps with
|
|
// controlling animation playback time.
|
|
ozz::sample::PlaybackController controller;
|
|
|
|
// Blending weight_setting for the layer.
|
|
float weight_setting;
|
|
|
|
// Blending weight_setting setting of the joints of this layer that are
|
|
// affected
|
|
// by the masking.
|
|
float joint_weight_setting;
|
|
|
|
// Runtime animation.
|
|
ozz::animation::Animation animation;
|
|
|
|
// Sampling cache.
|
|
ozz::animation::SamplingCache cache;
|
|
|
|
// Buffer of local transforms as sampled from animation_.
|
|
ozz::vector<ozz::math::SoaTransform> locals;
|
|
|
|
// Per-joint weights used to define the partial animation mask. Allows to
|
|
// select which joints are considered during blending, and their individual
|
|
// weight_setting.
|
|
ozz::vector<ozz::math::SimdFloat4> joint_weights;
|
|
} samplers_[kNumLayers]; // kNumLayers animations to blend.
|
|
|
|
// Index of the joint at the base of the upper body hierarchy.
|
|
int upper_body_root_;
|
|
|
|
// Blending job bind pose threshold.
|
|
float threshold_;
|
|
|
|
// Buffer of local transforms which stores the blending result.
|
|
ozz::vector<ozz::math::SoaTransform> blended_locals_;
|
|
|
|
// Buffer of model space matrices. These are computed by the local-to-model
|
|
// job after the blending stage.
|
|
ozz::vector<ozz::math::Float4x4> models_;
|
|
};
|
|
|
|
int main(int _argc, const char** _argv) {
|
|
const char* title = "Ozz-animation sample: Partial animations blending";
|
|
return PartialBlendSampleApplication().Run(_argc, _argv, "1.0", title);
|
|
}
|