void bc_match_scale(Object *ob, UnitConverter &bc_unit, bool scale_to_scene)
{
if (scale_to_scene) {
mul_m4_m4m4(ob->obmat, bc_unit.get_scale(), ob->obmat);
}
mul_m4_m4m4(ob->obmat, bc_unit.get_rotation(), ob->obmat);
BKE_object_apply_mat4(ob, ob->obmat, 0, 0);
}
/**
* Calculate a rescale factor such that the imported scene's scale
* is preserved. I.e. 1 meter in the import will also be
* 1 meter in the current scene.
* XXX : I am not sure if it is correct to map 1 Blender Unit
* to 1 Meter for unit type NONE. But it looks reasonable to me.
*/
void bc_match_scale(std::vector<Object *> *objects_done,
Scene &sce,
UnitConverter &bc_unit)
{
Object *ob = NULL;
PointerRNA scene_ptr, unit_settings;
PropertyRNA *system_ptr, *scale_ptr;
RNA_id_pointer_create(&sce.id, &scene_ptr);
unit_settings = RNA_pointer_get(&scene_ptr, "unit_settings");
system_ptr = RNA_struct_find_property(&unit_settings, "system");
scale_ptr = RNA_struct_find_property(&unit_settings, "scale_length");
int type = RNA_property_enum_get(&unit_settings, system_ptr);
float bl_scale;
switch (type) {
case USER_UNIT_NONE:
bl_scale = 1.0; // map 1 Blender unit to 1 Meter
break;
case USER_UNIT_METRIC:
bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
break;
default :
bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
// it looks like the conversion to Imperial is done implicitly.
// So nothing to do here.
break;
}
float scale_conv = bc_unit.getLinearMeter() / bl_scale;
float rescale[3];
rescale[0] = rescale[1] = rescale[2] = scale_conv;
float size_mat4[4][4];
float axis_mat4[4][4];
unit_m4(axis_mat4);
size_to_mat4(size_mat4, rescale);
for (std::vector<Object *>::iterator it = objects_done->begin();
it != objects_done->end();
++it)
{
ob = *it;
mult_m4_m4m4(ob->obmat, size_mat4, ob->obmat);
mult_m4_m4m4(ob->obmat, bc_unit.get_rotation(), ob->obmat);
BKE_object_apply_mat4(ob, ob->obmat, 0, 0);
}
}
