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fix wrong look at

This commit is contained in:
yangxiao 2014-10-31 11:32:10 +08:00
parent e87e0290fd
commit 642a601502
1 changed files with 7 additions and 4 deletions
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11
cocos/2d/CCCamera.cpp
View File

@ -130,12 +130,15 @@ void Camera::lookAt(const Vec3& lookAtPos, const Vec3& up)
rotation.m[9] = zaxis.y;
rotation.m[10] = zaxis.z;
rotation.m[11] = 0;
Quaternion quaternion;
Quaternion::createFromRotationMatrix(rotation,&quaternion);
float fRoll = atan2(2 * (quaternion.w * quaternion.z + quaternion.x * quaternion.y) , 1 - 2 * (quaternion.z * quaternion.z + quaternion.x * quaternion.x));
float fPitch = asin(clampf(2 * (quaternion.w * quaternion.x - quaternion.y * quaternion.z) , -1.0f , 1.0f));
float fYaw = atan2(2 * (quaternion.w * quaternion.y + quaternion.z * quaternion.x) , 1 - 2 * (quaternion.x * quaternion.x + quaternion.y * quaternion.y));
setRotation3D(Vec3(CC_RADIANS_TO_DEGREES(fPitch),CC_RADIANS_TO_DEGREES(fYaw),CC_RADIANS_TO_DEGREES(fRoll)));
float rotx = atan2f(2 * (quaternion.w * quaternion.x + quaternion.y * quaternion.z), 1 - 2 * (quaternion.x * quaternion.x + quaternion.y * quaternion.y));
float roty = asin(clampf(2 * (quaternion.w * quaternion.y - quaternion.z * quaternion.x) , -1.0f , 1.0f));
float rotz = -atan2(2 * (quaternion.w * quaternion.z + quaternion.x * quaternion.y) , 1 - 2 * (quaternion.y * quaternion.y + quaternion.z * quaternion.z));
setRotation3D(Vec3(CC_RADIANS_TO_DEGREES(rotx),CC_RADIANS_TO_DEGREES(roty),CC_RADIANS_TO_DEGREES(rotz)));
}
const Mat4& Camera::getViewProjectionMatrix() const