scale.h

Go to the documentation of this file.

/*
 Copyright (C) 2001-2006, William Joseph.
 All Rights Reserved.

 This file is part of GtkRadiant.

 GtkRadiant is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 GtkRadiant is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with GtkRadiant; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if !defined(INCLUDED_SCALE_H)
#define INCLUDED_SCALE_H

#include "ientity.h"

#include "math/matrix.h"
#include "generic/callback.h"
#include "stringio.h"

const Vector3 SCALEKEY_IDENTITY = Vector3(1, 1, 1);

inline void default_scale (Vector3& scale)
{
    scale = SCALEKEY_IDENTITY;
}
inline void read_scale (Vector3& scalevec, const char* value)
{
    float scale;
    if (!string_parse_float(value, scale) || scale == 0) {
        default_scale(scalevec);
    } else {
        scalevec = Vector3(scale, scale, scale);
    }
}
inline void read_scalevec (Vector3& scale, const char* value)
{
    if (!string_parse_vector3(value, scale) || scale[0] == 0 || scale[1] == 0 || scale[2] == 0)
        default_scale(scale);
}
inline void write_scale (const Vector3& scale, Entity* entity)
{
    if (scale[0] == 1 && scale[1] == 1 && scale[2] == 1) {
        entity->setKeyValue("modelscale_vec", "");
    } else {
        char value[64];

        sprintf(value, "%g %g %g", scale[0], scale[1], scale[2]);
        entity->setKeyValue("modelscale_vec", value);
    }
}

inline Vector3 scale_scaled (const Vector3& scale, const Vector3& scaling)
{
    return matrix4_get_scale_vec3(matrix4_multiplied_by_matrix4(matrix4_scale_for_vec3(scale), matrix4_scale_for_vec3(
            scaling)));
}

class ScaleKey
{
        Callback m_scaleChanged;
    public:
        Vector3 m_scale;

        ScaleKey (const Callback& scaleChanged) :
            m_scaleChanged(scaleChanged), m_scale(SCALEKEY_IDENTITY)
        {
        }

        void scaleChanged (const std::string& value)
        {
            read_scalevec(m_scale, value.c_str());
            m_scaleChanged();
        }
        typedef MemberCaller1<ScaleKey, const std::string&, &ScaleKey::scaleChanged> ScaleChangedCaller;

        void write (Entity* entity) const
        {
            write_scale(m_scale, entity);
        }
};

#endif