1 #ifndef __DALI_INTERNAL_PROGRESS_VALUE_H__
2 #define __DALI_INTERNAL_PROGRESS_VALUE_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/math/quaternion.h>
23 #include <dali/public-api/math/vector3.h>
24 #include <dali/public-api/math/radian.h>
25 #include <dali/public-api/math/degree.h>
34 * Progress / value pair for animating channels (properties) with keyframes
40 ProgressValue (float progress, T value)
41 : mProgress(progress),
50 float GetProgress () const
55 const T& GetValue () const
61 float mProgress; ///< Progress this value applies to animation channel
62 T mValue; ///< value this animation channel should take
65 typedef ProgressValue<Quaternion> ProgressQuaternion;
66 typedef std::vector<ProgressQuaternion> ProgressQuaternionContainer;
68 typedef ProgressValue<AngleAxis> ProgressAngleAxis;
69 typedef std::vector<AngleAxis> ProgressAngleAxisContainer;
71 typedef ProgressValue<bool> ProgressBoolean;
72 typedef std::vector<ProgressBoolean> ProgressBooleanContainer;
74 typedef ProgressValue<float> ProgressNumber;
75 typedef std::vector<ProgressNumber> ProgressNumberContainer;
77 typedef ProgressValue<int> ProgressInteger;
78 typedef std::vector<ProgressInteger> ProgressIntegerContainer;
80 typedef ProgressValue<Vector2> ProgressVector2;
81 typedef std::vector<ProgressVector2> ProgressVector2Container;
83 typedef ProgressValue<Vector3> ProgressVector3;
84 typedef std::vector<ProgressVector3> ProgressVector3Container;
86 typedef ProgressValue<Vector4> ProgressVector4;
87 typedef std::vector<ProgressVector4> ProgressVector4Container;
89 inline void Interpolate (Quaternion& result, const Quaternion& a, const Quaternion& b, float progress)
91 result = Quaternion::Slerp(a, b, progress);
94 inline void Interpolate (AngleAxis& result, const AngleAxis& a, const AngleAxis& b, float progress)
96 Quaternion q1(a.angle, a.axis);
97 Quaternion q2(b.angle, b.axis);
99 Quaternion iq = Quaternion::Slerp(q1, q2, progress);
100 iq.ToAxisAngle(result.axis, result.angle);
104 inline void Interpolate (bool& result, bool a, bool b, float progress)
106 result = progress < 0.5f ? a : b;
109 inline void Interpolate (float& result, float a, float b, float progress)
111 result = a + (b-a) * progress;
114 inline void Interpolate (int& result, int a, int b, float progress)
116 result = static_cast<int>(a + (b - a) * progress + 0.5f);
119 inline void Interpolate (Vector2& result, const Vector2& a, const Vector2& b, float progress)
121 result = a + (b-a) * progress;
124 inline void Interpolate (Vector3& result, const Vector3& a, const Vector3& b, float progress)
126 result = a + (b-a) * progress;
129 inline void Interpolate (Vector4& result, const Vector4& a, const Vector4& b, float progress)
131 result = a + (b-a) * progress;
134 /* Cubic Interpolation (Catmull-Rom spline) between values p1 and p2. p0 and p3 are prev and next values
135 * and are used as control points to calculate tangent of the curve at interpolation points.
137 * f(t) = a3*t^3 + a2*t^2 + a1*t + a0
138 * Restrictions: f(0)=p1 f(1)=p2 f'(0)=(p2-p0)*0.5 f'(1)=(p3-p1)*0.5
141 inline void CubicInterpolate( int& result, int p0, int p1, int p2, int p3, float progress )
143 float a3 = p3*0.5f - p2*1.5f + p1*1.5f - p0*0.5f;
144 float a2 = p0 - p1*2.5f + p2*2.0f - p3*0.5f;
145 float a1 = (p2-p0)*0.5f;
147 result = static_cast<int>( a3*progress*progress*progress + a2*progress*progress + a1*progress + p1 + 0.5f );
150 inline void CubicInterpolate( float& result, float p0, float p1, float p2, float p3, float progress )
152 float a3 = p3*0.5f - p2*1.5f + p1*1.5f - p0*0.5f;
153 float a2 = p0 - p1*2.5f + p2*2.0f - p3*0.5f;
154 float a1 = (p2-p0)*0.5f;
156 result = a3*progress*progress*progress + a2*progress*progress + a1*progress + p1;
159 inline void CubicInterpolate( Vector2& result, const Vector2& p0, const Vector2& p1, const Vector2& p2, const Vector2& p3, float progress )
161 Vector2 a3 = p3*0.5f - p2*1.5f + p1*1.5f - p0*0.5f;
162 Vector2 a2 = p0 - p1*2.5f + p2*2.0f - p3*0.5f;
163 Vector2 a1 = (p2-p0)*0.5f;
165 result = a3*progress*progress*progress + a2*progress*progress + a1*progress + p1;
168 inline void CubicInterpolate( Vector3& result, const Vector3& p0, const Vector3& p1, const Vector3& p2, const Vector3& p3, float progress )
170 Vector3 a3 = p3*0.5f - p2*1.5f + p1*1.5f - p0*0.5f;
171 Vector3 a2 = p0 - p1*2.5f + p2*2.0f - p3*0.5f;
172 Vector3 a1 = (p2-p0)*0.5f;
174 result = a3*progress*progress*progress + a2*progress*progress + a1*progress + p1;
177 inline void CubicInterpolate( Vector4& result, const Vector4& p0, const Vector4& p1, const Vector4& p2, const Vector4& p3, float progress )
179 Vector4 a3 = p3*0.5f - p2*1.5f + p1*1.5f - p0*0.5f;
180 Vector4 a2 = p0 - p1*2.5f + p2*2.0f - p3*0.5f;
181 Vector4 a1 = (p2-p0)*0.5f;
183 result = a3*progress*progress*progress + a2*progress*progress + a1*progress + p1;
186 inline void CubicInterpolate( bool& result, bool p0, bool p1, bool p2, bool p3, float progress )
188 Interpolate( result, p1, p2, progress);
191 inline void CubicInterpolate( Quaternion& result, const Quaternion& p0, const Quaternion& p1, const Quaternion& p2, const Quaternion& p3, float progress )
193 Interpolate( result, p1, p2, progress);
196 inline void CubicInterpolate( AngleAxis& result, const AngleAxis& p0, const AngleAxis& p1, const AngleAxis& p2, const AngleAxis& p3, float progress )
198 Interpolate( result, p1, p2, progress);
201 } // namespace Internal
205 #endif //__DALI_PROGRESS_VALUE_H__