# Cinder

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List
- File Members

# include/cinder/Perlin.h

Go to the documentation of this file.

    00001 /*
    00002  Copyright (c) 2010, The Barbarian Group
    00003  All rights reserved.
    00004
    00005  Redistribution and use in source and binary forms, with or without modification, are permitted provided that
    00006  the following conditions are met:
    00007
    00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and
    00009     the following disclaimer.
    00010     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
    00011     the following disclaimer in the documentation and/or other materials provided with the distribution.
    00012
    00013  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
    00014  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
    00015  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
    00016  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
    00017  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00018  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    00019  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    00020  POSSIBILITY OF SUCH DAMAGE.
    00021 */
    00022
    00023 #pragma once
    00024
    00025 #include "cinder/Cinder.h"
    00026 #include "cinder/Vector.h"
    00027
    00028 namespace cinder {
    00029
    00030 class Perlin
    00031 {
    00032  public:
    00033     Perlin( uint8_t aOctaves = 4 );
    00034     Perlin( uint8_t aOctaves, int32_t aSeed );
    00035
    00036     void    setSeed( int32_t aSeed );
    00037     uint8_t getOctaves() const { return mOctaves; }
    00038     void    setOctaves( uint8_t aOctaves ) { mOctaves = aOctaves; }
    00039
    00041     float   fBm( float v ) const;
    00042     float   fBm( const Vec2f &v ) const;
    00043     float   fBm( float x, float y ) const { return fBm( Vec2f( x, y ) ); }
    00044     float   fBm( const Vec3f &v ) const;
    00045     float   fBm( float x, float y, float z ) const { return fBm( Vec3f( x, y, z ) ); }
    00046
    00048 //  float   dfBm( float v ) const;
    00049     Vec2f   dfBm( const Vec2f &v ) const;
    00050     Vec2f   dfBm( float x, float y ) const { return dfBm( Vec2f( x, y ) ); }
    00051     Vec3f   dfBm( const Vec3f &v ) const;
    00052     Vec3f   dfBm( float x, float y, float z ) const { return dfBm( Vec3f( x, y, z ) ); }
    00053
    00055     float   noise( float x ) const;
    00056     float   noise( float x, float y ) const;
    00057     float   noise( float x, float y, float z ) const;
    00058
    00060 //  float   dnoise( float x ) const;
    00061     Vec2f   dnoise( float x, float y ) const;
    00062     Vec3f   dnoise( float x, float y, float z ) const;
    00063
    00064  private:
    00065     void    initPermutationTable();
    00066
    00067     float grad( int32_t hash, float x ) const;
    00068     float grad( int32_t hash, float x, float y ) const;
    00069     float grad( int32_t hash, float x, float y, float z ) const;
    00070
    00071     uint8_t     mOctaves;
    00072     int32_t     mSeed;
    00073
    00074     uint8_t     mPerms[512];
    00075 };
    00076
    00077 } // namespace cinder