1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef TEXTURE_ATLAS_H
#define TEXTURE_ATLAS_H
#include <string>
#include <vector>
#include <map>
#include "System/creg/creg_cond.h"
/** @brief Class for combining multiple bitmaps into one large single bitmap. */
struct AtlasedTexture
{
public:
CR_DECLARE_STRUCT(AtlasedTexture);
float xstart;
float xend;
float ystart;
float yend;
int ixstart;
int iystart;
};
/**
* @brief Same as AtlasedTexture, but with a different name,
* so the explosiongenerator can differentiate between different atlases.
*/
struct GroundFXTexture : public AtlasedTexture
{
public:
CR_DECLARE_STRUCT(AtlasedTexture);
};
class CTextureAtlas
{
public:
//! set to true to write finalized texture atlas to disk
static bool debug;
unsigned int gltex;
bool freeTexture; //! free texture on atlas destruction?
int xsize;
int ysize;
CTextureAtlas(int maxxSize, int maxySize);
~CTextureAtlas();
enum TextureType {
RGBA32
};
//! Add a texture from a memory pointer returns -1 if failed.
int AddTexFromMem(std::string name, int xsize, int ysize, TextureType texType, void* data);
/**
* Returns a memory pointer to the texture pixel data array.
* (reduces redundant memcpy in contrast to AddTexFromMem())
*/
void* AddTex(std::string name, int xsize, int ysize, TextureType texType = RGBA32);
//! Add a texture from a file, returns -1 if failed.
int AddTexFromFile(std::string name, std::string file);
/**
* Creates the atlas containing all the specified textures.
* @return true if suceeded, false if not all textures did fit
* into the specified maxsize.
*/
bool Finalize();
void BindTexture();
/**
* @return a boolean true if the texture exists within
* the "textures" map and false if it does not.
*/
bool TextureExists(const std::string& name);
//! @return a Texture struct of the specified texture
AtlasedTexture GetTexture(const std::string& name);
/**
* @return a pointer to a Texture struct of the specified texture,
* this pointer points to the actuall Texture struct stored,
* do not delete or modify
*/
AtlasedTexture* GetTexturePtr(const std::string& name);
/**
* @return a Texture struct of the specified texture if it exists,
* otherwise return a backup texture.
*/
AtlasedTexture GetTextureWithBackup(const std::string& name, const std::string& backupName);
AtlasedTexture* GetTexturePtrWithBackup(const std::string& name, const std::string& backupName);
protected:
struct MemTex
{
std::vector<std::string> names;
int xsize;
int ysize;
TextureType texType;
int xpos;
int ypos;
void* data;
};
// temporary storage of all textures
std::vector<MemTex*> memtextures;
std::map<std::string, MemTex*> files;
std::map<std::string, AtlasedTexture> textures;
int maxxsize;
int maxysize;
int usedPixels;
bool initialized;
int GetBPP(TextureType tetxType);
static int CompareTex(MemTex* tex1, MemTex* tex2);
bool IncreaseSize();
void CreateTexture();
};
#endif // TEXTURE_ATLAS_H
|
