184 lines
7.1 KiB
C
184 lines
7.1 KiB
C
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#pragma once
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#define _USE_MATH_DEFINES
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#include <cmath>
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#include <limits>
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#include <cgv/data/ref_ptr.h>
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#include <cgv/base/base.h>
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#include <cgv/math/geom.h>
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#include <cgv/gui/trigger.h>
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#include "lib_begin.h"
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namespace cgv {
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namespace gui {
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class CGV_API animation;
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typedef cgv::data::ref_ptr<animation, true> animation_ptr;
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enum AnimationParameterMapping
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{
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APM_LINEAR = -3,
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APM_SIN_SQUARED = -2,
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APM_CUBIC = -1,
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};
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class CGV_API animation : public cgv::data::ref_counted
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{
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protected:
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AnimationParameterMapping parameter_mapping;
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double start_time;
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double end_time;
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cgv::base::base_ptr bp;
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virtual void set_value(double time) = 0;
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public:
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animation(double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_LINEAR);
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void set_base_ptr(cgv::base::base_ptr _bp);
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void configure(AnimationParameterMapping _parameter_mapping, cgv::base::base_ptr _bp);
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void set_parameter_mapping(AnimationParameterMapping _parameter_mapping);
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double get_start_time() const;
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bool has_started(double time) const;
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bool is_over(double time) const;
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double get_parameter(double time) const;
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bool animates(const void* ptr) const;
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bool overlaps(const char* value_ptr, size_t value_size) const;
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virtual char* get_ptr() const = 0;
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virtual size_t get_value_size() const = 0;
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bool set_time(double time);
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};
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extern CGV_API void add_animation(animation_ptr a_ptr, bool terminate_other_animations = true);
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template <typename T>
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class value_animation : public animation
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{
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protected:
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T start_value;
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public:
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T end_value;
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protected:
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T* value_ptr;
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char* get_ptr() const { return reinterpret_cast<char*>(value_ptr); }
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size_t get_value_size() const { return sizeof(T); }
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public:
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value_animation(T& value, const T& _end_value, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_SIN_SQUARED) :
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animation(_start_time, _end_time, _parameter_mapping), value_ptr(&value), start_value(value), end_value(_end_value)
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{}
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};
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template <typename T>
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class linear_blend_animation : public value_animation<T>
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{
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protected:
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void set_value(double time) {
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double lambda = this->get_parameter(time);
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*this->value_ptr = (1.0 - lambda)*this->start_value + lambda*this->end_value;
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}
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public:
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linear_blend_animation(T& value, const T& _end_value, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_SIN_SQUARED) :
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value_animation<T>(value, _end_value, _start_time, _end_time, _parameter_mapping)
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{}
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};
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template <typename T>
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class geometric_blend_animation : public value_animation<T>
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{
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protected:
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void set_value(double time) {
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double lambda = this->get_parameter(time);
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*this->value_ptr = pow(this->start_value,(1.0 - lambda))*pow(this->end_value, lambda);
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}
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public:
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geometric_blend_animation(T& value, const T& _end_value, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_SIN_SQUARED) :
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value_animation<T>(value, _end_value, _start_time, _end_time, _parameter_mapping)
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{}
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};
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template <typename T>
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class slerp_animation : public value_animation<T>
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{
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double Omega;
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protected:
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void set_value(double time) {
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double lambda = this->get_parameter(time);
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*this->value_ptr = pow(this->start_value, (1.0 - lambda))*pow(this->end_value, lambda);
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}
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public:
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slerp_animation(T& value, const T& _end_value, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_LINEAR) :
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value_animation<T>(value, _end_value, _start_time, _end_time, _parameter_mapping)
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{
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Omega = acos(dot(this->start_value, this->end_value) / sqrt(dot(this->start_value,this->start_value)*dot(this->end_value,this->end_value)));
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}
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};
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template <typename T>
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class rotation_animation : public value_animation<cgv::math::fvec<T,3> >
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{
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public:
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cgv::math::fvec<T, 3> axis;
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T angle;
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protected:
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void set_value(double time) {
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double lambda = this->get_parameter(time);
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*this->value_ptr = cgv::math::rotate(this->start_value, axis, lambda * angle);
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}
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public:
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rotation_animation(cgv::math::fvec<T, 3>& value, const cgv::math::fvec<T, 3>& _axis, double _angle, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_SIN_SQUARED) :
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value_animation<cgv::math::fvec<T, 3> >(value, rotate(value, _axis, _angle), _start_time, _end_time, _parameter_mapping), axis(_axis), angle(_angle)
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{}
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rotation_animation(cgv::math::fvec<T, 3>& value, const cgv::math::fvec<T, 3>& _end_value, double _start_time, double _end_time, AnimationParameterMapping _parameter_mapping = APM_SIN_SQUARED) :
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value_animation<cgv::math::fvec<T, 3> >(value, _end_value, _start_time, _end_time, _parameter_mapping)
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{
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compute_rotation_axis_and_angle_from_vector_pair(this->start_value, this->end_value, axis, angle);
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}
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};
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template <typename T>
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animation_ptr animate_with_linear_blend(T& value, const T& target_value, double duration_sec, double delay_sec = 0.0f, bool terminate_other_animations = true)
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{
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double time = trigger::get_current_time();
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animation_ptr a_ptr(new linear_blend_animation<T>(value, target_value, time + delay_sec, time + duration_sec + delay_sec));
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add_animation(a_ptr, terminate_other_animations);
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return a_ptr;
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}
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template <typename T>
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animation_ptr animate_with_geometric_blend(T& value, const T& target_value, double duration_sec, double delay_sec = 0.0f, bool terminate_other_animations = true)
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{
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double time = trigger::get_current_time();
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animation_ptr a_ptr(new geometric_blend_animation<T>(value, target_value, time + delay_sec, time + duration_sec + delay_sec));
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add_animation(a_ptr, terminate_other_animations);
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return a_ptr;
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}
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template <typename T>
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animation_ptr animate_with_slerp(T& value, const T& target_value, double duration_sec, double delay_sec = 0.0f, bool terminate_other_animations = true)
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{
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double time = trigger::get_current_time();
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animation_ptr a_ptr(new slerp_animation<T>(value, target_value, time + delay_sec, time + duration_sec + delay_sec));
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add_animation(a_ptr, terminate_other_animations);
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return a_ptr;
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}
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template <typename T>
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animation_ptr animate_with_rotation(cgv::math::fvec<T, 3>& value, const cgv::math::fvec<T, 3>& target_value, double duration_sec, double delay_sec = 0.0f, bool terminate_other_animations = true)
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{
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double time = trigger::get_current_time();
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animation_ptr a_ptr(new rotation_animation<T>(value, target_value, time + delay_sec, time + duration_sec + delay_sec));
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add_animation(a_ptr, terminate_other_animations);
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return a_ptr;
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}
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template <typename T>
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animation_ptr animate_with_axis_rotation(cgv::math::fvec<T, 3>& value, const cgv::math::fvec<T, 3>& axis, T angle, double duration_sec, double delay_sec = 0.0f, bool terminate_other_animations = true)
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{
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double time = trigger::get_current_time();
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animation_ptr a_ptr(new rotation_animation<T>(value, axis, angle, time + delay_sec, time + duration_sec + delay_sec));
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add_animation(a_ptr, terminate_other_animations);
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return a_ptr;
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}
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}
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}
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#include <cgv/config/lib_end.h>
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