C++ (Cpp) RVec3GetZ示例

示例#1

文件： RVec4.c 项目： vaiorabbit/rmath3d

void
RVec4SetXYZ( RVec4* out, const RVec3* v )
{
    out->x = RVec3GetX( v );
    out->y = RVec3GetY( v );
    out->z = RVec3GetZ( v );
}

示例#2

void
RQuatSetXYZ( RQuat* out, const struct RVec3* v )
{
    out->x = RVec3GetX( v );
    out->y = RVec3GetY( v );
    out->z = RVec3GetZ( v );
}

示例#3

void
RQuatRotationAxis( RQuat* out, const struct RVec3* axis, rmReal radian )
{
    rmReal s = rmSin( radian / 2.0f );
    rmReal x, y, z, w;

    x = s * RVec3GetX( axis );
    y = s * RVec3GetY( axis );
    z = s * RVec3GetZ( axis );
    w = rmCos( radian / 2.0f );

    RQuatSetElements( out, x, y, z, w );
}

示例#4

文件： RMtx4.c 项目： franciscoangelini/lol-model-format

/* http://en.wikipedia.org/wiki/Rotation_matrix
 */
void
RMtx4RotationAxis( RMtx4* out, const RVec3* axis, rmReal radian )
{
    rmReal s = rmSin( radian );
    rmReal c = rmCos( radian );
    rmReal C = 1.0f - c;
    rmReal x = RVec3GetX( axis );
    rmReal y = RVec3GetY( axis );
    rmReal z = RVec3GetZ( axis );

    RMtx4Identity( out );
    SET_ELEMENT( out, 0, 0, x*x*C + c );
    SET_ELEMENT( out, 0, 1, x*y*C - z*s );
    SET_ELEMENT( out, 0, 2, z*x*C + y*s );
    SET_ELEMENT( out, 1, 0, x*y*C + z*s );
    SET_ELEMENT( out, 1, 1, y*y*C + c );
    SET_ELEMENT( out, 1, 2, y*z*C - x*s );
    SET_ELEMENT( out, 2, 0, z*x*C - y*s );
    SET_ELEMENT( out, 2, 1, y*z*C + x*s );
    SET_ELEMENT( out, 2, 2, z*z*C + c );
}