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1 /* | 1 /* |
2 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) | 2 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) |
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | 3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
4 * | 4 * |
5 * This library is free software; you can redistribute it and/or | 5 * This library is free software; you can redistribute it and/or |
6 * modify it under the terms of the GNU Library General Public | 6 * modify it under the terms of the GNU Library General Public |
7 * License as published by the Free Software Foundation; either | 7 * License as published by the Free Software Foundation; either |
8 * version 2 of the License, or (at your option) any later version. | 8 * version 2 of the License, or (at your option) any later version. |
9 * | 9 * |
10 * This library is distributed in the hope that it will be useful, | 10 * This library is distributed in the hope that it will be useful, |
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 * Library General Public License for more details. | 13 * Library General Public License for more details. |
14 * | 14 * |
15 * You should have received a copy of the GNU Library General Public License | 15 * You should have received a copy of the GNU Library General Public License |
16 * along with this library; see the file COPYING.LIB. If not, write to | 16 * along with this library; see the file COPYING.LIB. If not, write to |
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
18 * Boston, MA 02110-1301, USA. | 18 * Boston, MA 02110-1301, USA. |
19 * | 19 * |
20 */ | 20 */ |
21 | 21 |
22 #include "config.h" | 22 #include "config.h" |
23 #include "platform/transforms/RotateTransformOperation.h" | 23 #include "platform/transforms/RotateTransformOperation.h" |
24 | 24 |
25 #include "platform/animation/AnimationUtilities.h" | 25 #include "platform/animation/AnimationUtilities.h" |
26 #include "platform/geometry/FloatPoint3D.h" | 26 #include "platform/geometry/FloatPoint3D.h" |
27 #include "wtf/MathExtras.h" | 27 #include "wtf/MathExtras.h" |
28 #include <algorithm> | 28 #include <algorithm> |
29 | 29 |
30 using namespace std; | |
31 | |
32 namespace blink { | 30 namespace blink { |
33 | 31 |
34 static const double angleEpsilon = 1e-4; | 32 static const double angleEpsilon = 1e-4; |
35 | 33 |
36 FloatPoint3D RotateTransformOperation::axis() const | 34 FloatPoint3D RotateTransformOperation::axis() const |
37 { | 35 { |
38 return FloatPoint3D(x(), y(), z()); | 36 return FloatPoint3D(x(), y(), z()); |
39 } | 37 } |
40 | 38 |
41 bool RotateTransformOperation::shareSameAxis(const RotateTransformOperation* fro
m, const RotateTransformOperation* to, FloatPoint3D* axis, double* fromAngle, do
uble* toAngle) | 39 bool RotateTransformOperation::shareSameAxis(const RotateTransformOperation* fro
m, const RotateTransformOperation* to, FloatPoint3D* axis, double* fromAngle, do
uble* toAngle) |
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128 toT.blend(fromT, progress); | 126 toT.blend(fromT, progress); |
129 | 127 |
130 // Extract the result as a quaternion | 128 // Extract the result as a quaternion |
131 TransformationMatrix::DecomposedType decomp; | 129 TransformationMatrix::DecomposedType decomp; |
132 toT.decompose(decomp); | 130 toT.decompose(decomp); |
133 | 131 |
134 // Convert that to Axis/Angle form | 132 // Convert that to Axis/Angle form |
135 double x = -decomp.quaternionX; | 133 double x = -decomp.quaternionX; |
136 double y = -decomp.quaternionY; | 134 double y = -decomp.quaternionY; |
137 double z = -decomp.quaternionZ; | 135 double z = -decomp.quaternionZ; |
138 double length = sqrt(x * x + y * y + z * z); | 136 double length = std::sqrt(x * x + y * y + z * z); |
139 double angle = 0; | 137 double angle = 0; |
140 | 138 |
141 if (length > 0.00001) { | 139 if (length > 0.00001) { |
142 x /= length; | 140 x /= length; |
143 y /= length; | 141 y /= length; |
144 z /= length; | 142 z /= length; |
145 angle = rad2deg(acos(decomp.quaternionW) * 2); | 143 angle = rad2deg(std::acos(decomp.quaternionW) * 2); |
146 } else { | 144 } else { |
147 x = 0; | 145 x = 0; |
148 y = 0; | 146 y = 0; |
149 z = 1; | 147 z = 1; |
150 } | 148 } |
151 return RotateTransformOperation::create(x, y, z, angle, Rotate3D); | 149 return RotateTransformOperation::create(x, y, z, angle, Rotate3D); |
152 } | 150 } |
153 | 151 |
154 bool RotateTransformOperation::canBlendWith(const TransformOperation& other) con
st | 152 bool RotateTransformOperation::canBlendWith(const TransformOperation& other) con
st |
155 { | 153 { |
156 return other.isSameType(*this); | 154 return other.isSameType(*this); |
157 } | 155 } |
158 | 156 |
159 } // namespace blink | 157 } // namespace blink |
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