The GtkRadiant sources as originally released under the GPL license.

plugins/entity/scale.h

@@ -0,0 +1,128 @@
+/*
+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", "");
+    entity->setKeyValue("modelscale_vec", "");
+  }
+  else
+  {
+    char value[64];
+
+    if(scale[0] == scale[1] && scale[0] == scale[2])
+    {
+      sprintf(value, "%g", scale[0]);
+      entity->setKeyValue("modelscale_vec", "");
+      entity->setKeyValue("modelscale", value);
+    }
+    else
+    {
+      sprintf(value, "%g %g %g", scale[0], scale[1], scale[2]);
+      entity->setKeyValue("modelscale", "");
+      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 uniformScaleChanged(const char* value)
+  {
+    read_scale(m_scale, value);
+    m_scaleChanged();
+  }
+  typedef MemberCaller1<ScaleKey, const char*, &ScaleKey::uniformScaleChanged> UniformScaleChangedCaller;
+
+  void scaleChanged(const char* value)
+  {
+    read_scalevec(m_scale, value);
+    m_scaleChanged();
+  }
+  typedef MemberCaller1<ScaleKey, const char*, &ScaleKey::scaleChanged> ScaleChangedCaller;
+
+  void write(Entity* entity) const
+  {
+    write_scale(m_scale, entity);
+  }
+};
+
+
+#endif