OOStandaloneAtmosphereGenerator.h

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/*
 
OOStandaloneAtmosphereGenerator.h
 
Generator for planet atmospheres when the planet is using a
non-generated diffuse map.
 
 
Oolite
Copyright (C) 2004-2013 Giles C Williams and contributors
 
This program 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.
 
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
 
*/
 
#import "OOTextureGenerator.h"
#import "OOMaths.h"
 
 
typedef struct OOStandaloneAtmosphereGeneratorInfo
{
    RANROTSeed                      seed;
    
    unsigned                        width;
    unsigned                        height;
    
    // Atmosphere parameters.
    float                           cloudAlpha;
    float                           cloudFraction;
    FloatRGB                        airColor;
    FloatRGB                        cloudColor;
    FloatRGB                        paleCloudColor;
    
    // Noise generation stuff.
    float                           *fbmBuffer;
    
    uint16_t                        *permutations;
    
    unsigned                        planetAspectRatio;
    unsigned                        planetScaleOffset;
    BOOL                            perlin3d;
} OOStandaloneAtmosphereGeneratorInfo;
 
 
 
@interface OOStandaloneAtmosphereGenerator: OOTextureGenerator
{
@private
    OOStandaloneAtmosphereGeneratorInfo _info;
    unsigned                        _planetScale;
}
 
 
- (id) initWithPlanetInfo:(NSDictionary *)planetInfo;
 
+ (OOTexture *) planetTextureWithInfo:(NSDictionary *)planetInfo;
+ (BOOL) generateAtmosphereTexture:(OOTexture **)texture withInfo:(NSDictionary *)planetInfo;
 
@end