1 #ifndef DALI_INTERNAL_PROGRESS_VALUE_H
2 #define DALI_INTERNAL_PROGRESS_VALUE_H
5 * Copyright (c) 2021 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/angle-axis.h>
23 #include <dali/public-api/math/quaternion.h>
24 #include <dali/public-api/math/vector2.h>
25 #include <dali/public-api/math/vector3.h>
26 #include <dali/public-api/math/vector4.h>
33 * Progress / value pair for animating channels (properties) with keyframes
39 ProgressValue(float progress, T value)
40 : mProgress(progress),
45 ~ProgressValue() = default;
47 float GetProgress() const
52 const T& GetValue() const
58 float mProgress; ///< Progress this value applies to animation channel
59 T mValue; ///< value this animation channel should take
62 inline void Interpolate(Quaternion& result, const Quaternion& a, const Quaternion& b, float progress)
64 result = Quaternion::Slerp(a, b, progress);
67 inline void Interpolate(AngleAxis& result, const AngleAxis& a, const AngleAxis& b, float progress)
69 Quaternion q1(a.angle, a.axis);
70 Quaternion q2(b.angle, b.axis);
72 Quaternion iq = Quaternion::Slerp(q1, q2, progress);
73 iq.ToAxisAngle(result.axis, result.angle);
76 inline void Interpolate(bool& result, bool a, bool b, float progress)
78 result = progress < 0.5f ? a : b;
81 inline void Interpolate(int32_t& result, int a, int b, float progress)
83 result = static_cast<int>(static_cast<float>(a) + static_cast<float>(b - a) * progress + 0.5f);
86 inline void Interpolate(float& result, float a, float b, float progress)
88 result = a + (b - a) * progress;
91 inline void Interpolate(Vector2& result, const Vector2& a, const Vector2& b, float progress)
93 result = a + (b - a) * progress;
96 inline void Interpolate(Vector3& result, const Vector3& a, const Vector3& b, float progress)
98 result = a + (b - a) * progress;
101 inline void Interpolate(Vector4& result, const Vector4& a, const Vector4& b, float progress)
103 result = a + (b - a) * progress;
106 /* Cubic Interpolation (Catmull-Rom spline) between values p1 and p2. p0 and p3 are prev and next values
107 * and are used as control points to calculate tangent of the curve at interpolation points.
109 * f(t) = a3*t^3 + a2*t^2 + a1*t + a0
110 * Restrictions: f(0)=p1 f(1)=p2 f'(0)=(p2-p0)*0.5 f'(1)=(p3-p1)*0.5
113 inline void CubicInterpolate(int32_t& result, int32_t p0, int32_t p1, int32_t p2, int32_t p3, float progress)
115 float a3 = static_cast<float>(p3) * 0.5f - static_cast<float>(p2) * 1.5f + static_cast<float>(p1) * 1.5f - static_cast<float>(p0) * 0.5f;
116 float a2 = static_cast<float>(p0) - static_cast<float>(p1) * 2.5f + static_cast<float>(p2) * 2.0f - static_cast<float>(p3) * 0.5f;
117 float a1 = static_cast<float>(p2 - p0) * 0.5f;
119 result = static_cast<int>(a3 * progress * progress * progress + a2 * progress * progress + a1 * progress + static_cast<float>(p1) + 0.5f);
122 inline void CubicInterpolate(float& result, float p0, float p1, float p2, float p3, float progress)
124 float a3 = p3 * 0.5f - p2 * 1.5f + p1 * 1.5f - p0 * 0.5f;
125 float a2 = p0 - p1 * 2.5f + p2 * 2.0f - p3 * 0.5f;
126 float a1 = (p2 - p0) * 0.5f;
128 result = a3 * progress * progress * progress + a2 * progress * progress + a1 * progress + p1;
131 inline void CubicInterpolate(Vector2& result, const Vector2& p0, const Vector2& p1, const Vector2& p2, const Vector2& p3, float progress)
133 Vector2 a3 = p3 * 0.5f - p2 * 1.5f + p1 * 1.5f - p0 * 0.5f;
134 Vector2 a2 = p0 - p1 * 2.5f + p2 * 2.0f - p3 * 0.5f;
135 Vector2 a1 = (p2 - p0) * 0.5f;
137 result = a3 * progress * progress * progress + a2 * progress * progress + a1 * progress + p1;
140 inline void CubicInterpolate(Vector3& result, const Vector3& p0, const Vector3& p1, const Vector3& p2, const Vector3& p3, float progress)
142 Vector3 a3 = p3 * 0.5f - p2 * 1.5f + p1 * 1.5f - p0 * 0.5f;
143 Vector3 a2 = p0 - p1 * 2.5f + p2 * 2.0f - p3 * 0.5f;
144 Vector3 a1 = (p2 - p0) * 0.5f;
146 result = a3 * progress * progress * progress + a2 * progress * progress + a1 * progress + p1;
149 inline void CubicInterpolate(Vector4& result, const Vector4& p0, const Vector4& p1, const Vector4& p2, const Vector4& p3, float progress)
151 Vector4 a3 = p3 * 0.5f - p2 * 1.5f + p1 * 1.5f - p0 * 0.5f;
152 Vector4 a2 = p0 - p1 * 2.5f + p2 * 2.0f - p3 * 0.5f;
153 Vector4 a1 = (p2 - p0) * 0.5f;
155 result = a3 * progress * progress * progress + a2 * progress * progress + a1 * progress + p1;
158 inline void CubicInterpolate(bool& result, bool p0, bool p1, bool p2, bool p3, float progress)
160 Interpolate(result, p1, p2, progress);
163 inline void CubicInterpolate(Quaternion& result, const Quaternion& p0, const Quaternion& p1, const Quaternion& p2, const Quaternion& p3, float progress)
165 Interpolate(result, p1, p2, progress);
168 inline void CubicInterpolate(AngleAxis& result, const AngleAxis& p0, const AngleAxis& p1, const AngleAxis& p2, const AngleAxis& p3, float progress)
170 Interpolate(result, p1, p2, progress);
173 } // namespace Internal
177 #endif // DALI_INTERNAL_PROGRESS_VALUE_H