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Dogcows Code - chaz/yoink/blob - src/Moof/Camera.cc
2 /*******************************************************************************
4 Copyright (c) 2009, Charles McGarvey
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
10 * Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 * Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *******************************************************************************/
36 void Camera::setPosition(const Vector3
& position
)
38 mState
.position
= position
;
41 void Camera::setRotation(const Quaternion
& rotation
)
43 mState
.orientation
= rotation
;
46 void Camera::lookAt(const Vector3
& point
)
48 // FIXME this doesn't work as expected
49 cml::quaternion_rotation_aim_at(mState
.orientation
, mState
.position
, point
,
50 Vector3(0.0, 1.0, 0.0));
54 void Camera::setProjection(const Matrix4
& projection
)
56 mProjection
= projection
;
59 void Camera::setProjection(Scalar fovy
, Scalar aspect
, Scalar abutting
,
62 cml::matrix_perspective_yfov_RH(mProjection
, fovy
, aspect
, abutting
,
63 distant
, cml::z_clip_neg_one
);
67 void Camera::uploadToGL(Scalar alpha
) const
71 glMatrixMode(GL_PROJECTION
);
72 glMultMatrix(mProjection
.data());
74 glMatrixMode(GL_MODELVIEW
);
75 glMultMatrix(mModelview
.data());
78 void Camera::calculate(Scalar alpha
) const
80 State3 state
= getState(alpha
);
82 cml::matrix_rotation_quaternion(mModelview
, state
.orientation
);
85 cml::matrix_translation(translate
, state
.position
);
87 mModelview
*= translate
;
89 mFrustum
.init(mModelview
, mProjection
);
93 void Camera::update(Scalar t
, Scalar dt
)
95 RigidBody3::update(t
, dt
);
98 void Camera::draw(Scalar alpha
) const
104 void Camera::handleEvent(const Event
& event
)
106 const Scalar ds
= 50.0;
111 if (event
.key
.keysym
.sym
== SDLK_RIGHT
)
113 mState
.position
[0] -= ds
;
115 else if (event
.key
.keysym
.sym
== SDLK_LEFT
)
117 mState
.position
[0] += ds
;
119 else if (event
.key
.keysym
.sym
== SDLK_UP
)
121 mState
.position
[1] -= ds
;
123 else if (event
.key
.keysym
.sym
== SDLK_DOWN
)
125 mState
.position
[1] += ds
;
127 else if (event
.key
.keysym
.sym
== SDLK_PAGEUP
)
129 mState
.position
[2] += ds
;
131 else if (event
.key
.keysym
.sym
== SDLK_PAGEDOWN
)
133 mState
.position
[2] -= ds
;
137 case SDL_MOUSEMOTION
:
139 Scalar xrel
= cml::rad(Scalar(event
.motion
.xrel
) / 6.0);
140 Scalar yrel
= cml::rad(Scalar(event
.motion
.yrel
) / 6.0);
142 Quaternion rotation
= mState
.orientation
;
144 cml::quaternion_rotate_about_world_x(rotation
, yrel
);
145 //mRotation.normalize();
146 cml::quaternion_rotate_about_world_y(rotation
, xrel
);
148 rotation
.normalize();
149 mState
.orientation
= rotation
;
153 case SDL_MOUSEBUTTONDOWN
:
154 if (event
.button
.button
== SDL_BUTTON_WHEELUP
)
156 mState
.position
[2] -= ds
;
158 else if (event
.button
.button
== SDL_BUTTON_WHEELDOWN
)
160 mState
.position
[2] -= ds
;
169 /** vim: set ts=4 sw=4 tw=80: *************************************************/
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