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hyzboy 2024-03-19 12:41:04 +08:00
commit fd7e7e3788
8 changed files with 1000 additions and 5 deletions
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124
inc/hgl/2d/Bitmap.h
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#ifndef HGL_2D_BITMAP_INCLUDE
#define HGL_2D_BITMAP_INCLUDE
#include<hgl/type/DataType.h>
#include<hgl/type/String.h>
#include<hgl/math/HalfFloat.h>
#include<iterator>
namespace hgl
{
namespace bitmap
{
template<typename T>
static void FillPixels(T *p,const T &color,const int length)
{
std::fill_n(p,length,color);
}
/**
* 简单的2D象素处理
*/
template<typename T> class Bitmap2D
template<typename T,uint C> class Bitmap
{
};//
int width,height;
T *data;
public:
Bitmap()
{
data=nullptr;
width=height=0;
}
~Bitmap()
{
delete[] data;
}
const uint GetChannels ()const{return C;}
const uint GetChannelBits ()const{return (sizeof(T)/C)<<3;}
const int GetWidth ()const{return width;}
const int GetHeight ()const{return height;}
const uint GetTotalPixels ()const{return width*height;}
const uint GetLineBytes ()const{return width*sizeof(T);}
const uint GetTotalBytes ()const{return width*height*sizeof(T);}
T *GetData(){return data;}
T *GetData(int x,int y)
{
return (x<0||x>=width||y<0||y>=height)?nullptr:data+(y*width+x);
}
const T *GetData()const{return data;}
const T *GetData(int x,int y)const
{
return (x<0||x>=width||y<0||y>=height)?nullptr:data+(y*width+x);
}
bool Create(uint w,uint h)
{
if(!w||!h)return(false);
if(data)
{
if(width==w&&height==h)return(true);
}
width=w;
height=h;
delete[] data;
data=new T[width*height];
return(true);
}
void Clear()
{
if(data)
{
delete[] data;
data=nullptr;
}
width=height=0;
}
void ClearColor(const T &color)
{
if(!data)return;
FillPixels<T>(data,color,width*height);
}
void Flip()
{
if(!data||height<=1)return;
const uint line_bytes=width*sizeof(T);
T *temp=new T[width];
T *top=data;
T *bottom=data+(width*(height-1));
while(top<bottom)
{
memcpy(temp,top,line_bytes);
memcpy(top,bottom,line_bytes);
memcpy(bottom,temp,line_bytes);
top+=width;
bottom-=width;
}
delete[] temp;
}
};//template<typename T> class Bitmap
using BitmapGrey8=Bitmap<uint8,1>;
using BitmapRG8=Bitmap<Vector2u8,2>;
using BitmapRGB8=Bitmap<Vector3u8,3>;
using BitmapRGBA8=Bitmap<Vector4u8,4>;
using BitmapU16=Bitmap<uint16,1>;
using BitmapU32=Bitmap<uint32,1>;
}//namespace bitmap
}//namespace hgl
#endif//HGL_2D_BITMAP_INCLUDE

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inc/hgl/2d/BitmapLoad.h Normal file
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#pragma once
#include<hgl/2d/Bitmap.h>
#include<hgl/io/FileInputStream.h>
namespace hgl
{
namespace bitmap
{
struct BitmapLoader
{
virtual const uint OnChannels()const=0;
virtual const uint OnChannelBits()const=0;
const uint OnPixelBits()const
{
return OnChannelBits()*OnChannels();
}
virtual void *OnRecvBitmap(uint w,uint h)=0;
virtual void OnLoadFailed()=0;
virtual void OnFlip()=0;
};
template<typename T> struct BitmapLoaderImpl:public BitmapLoader
{
T *bmp;
public:
BitmapLoaderImpl()
{
bmp=nullptr;
}
const uint OnChannels()const override{return bmp->GetChannels();}
const uint OnChannelBits()const override{return bmp->GetChannelBits();}
void *OnRecvBitmap(uint w,uint h) override
{
if(!bmp)
bmp=new T;
bmp->Create(w,h);
return bmp->GetData();
}
void OnLoadFailed() override
{
SAFE_CLEAR(bmp);
}
void OnFlip() override
{
if(bmp)
bmp->Flip();
}
};
bool LoadBitmapFromTGAStream(io::InputStream *,BitmapLoader *);
template<typename T>
inline T *LoadBitmapFromTGA(io::InputStream *is)
{
BitmapLoaderImpl<T> bli;
if(LoadBitmapFromTGAStream(is,&bli))
return bli.bmp;
return(nullptr);
}
inline BitmapRGB8 *LoadBitmapRGB8FromTGA(io::InputStream *is){return LoadBitmapFromTGA<BitmapRGB8>(is);}
inline BitmapRGBA8 *LoadBitmapRGBA8FromTGA(io::InputStream *is){return LoadBitmapFromTGA<BitmapRGBA8>(is);}
template<typename T>
inline T *LoadBitmapFromTGA(const OSString &filename)
{
io::OpenFileInputStream fis(filename);
if(!fis)
return(false);
return LoadBitmapFromTGA<T>(&fis);
}
inline BitmapRGB8 *LoadBitmapRGB8FromTGA(const OSString &filename){return LoadBitmapFromTGA<BitmapRGB8>(filename);}
inline BitmapRGBA8 *LoadBitmapRGBA8FromTGA(const OSString &filename){return LoadBitmapFromTGA<BitmapRGBA8>(filename);}
}//namespace bitmap
}//namespace hgl

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inc/hgl/2d/BitmapSave.h Normal file
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#pragma once
#include<hgl/2d/Bitmap.h>
#include<hgl/io/FileOutputStream.h>
namespace hgl
{
namespace bitmap
{
bool SaveBitmapToTGA(io::OutputStream *os,void *data,uint width,uint height,uint channels,uint single_channel_bits);
template<typename T>
inline bool SaveBitmapToTGA(io::OutputStream *os,const T *bmp)
{
if(!os||!bmp)return(false);
return SaveBitmapToTGA(os,(void *)(bmp->GetData()),bmp->GetWidth(),bmp->GetHeight(),bmp->GetChannels(),bmp->GetChannelBits());
}
template<typename T>
inline bool SaveBitmapToTGA(const OSString &filename,T *bmp)
{
if(filename.IsEmpty()||!bmp)
return(false);
io::OpenFileOutputStream fos(filename,io::FileOpenMode::CreateTrunc);
if(!fos)
return(false);
return SaveBitmapToTGA(fos,bmp);
}
}//namespace bitmap
}//namespace hgl

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inc/hgl/2d/Blend.h Normal file
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#pragma once
#include<hgl/type/DataType.h>
#include<hgl/2d/Bitmap.h>
namespace hgl
{
namespace bitmap
{
template<typename T> struct BlendColor
{
virtual const T operator()(const T &src,const T &)const
{
return src;
}
virtual const T operator()(const T &src,const T &,const float &)const
{
return src;
}
};//template<typename T> struct BlendColor
/**
* 位图混合处理模板
*/
template<typename ST,typename DT> class BlendBitmap
{
public:
void operator ()(const ST *src,DT *dst,const float alpha)const;
};//template<typename ST,typename DT> class BlendBitmap
struct BlendColorU32Additive:public bitmap::BlendColor<uint32>
{
const uint32 operator()(const uint32 &src,const uint32 &dst)const
{
uint64 result=src+dst;
return (result>HGL_U32_MAX)?HGL_U32_MAX:(result&HGL_U32_MAX);
}
const uint32 operator()(const uint32 &src,const uint32 &dst,const float &alpha)const
{
uint64 result=src*alpha+dst;
return (result>HGL_U32_MAX)?HGL_U32_MAX:(result&HGL_U32_MAX);
}
};
struct BlendColorRGBA8:public bitmap::BlendColor<Vector4u8>
{
const Vector4u8 operator()(const Vector4u8 &src,const Vector4u8 &dst)const
{
uint8 na=255-src.a;
return Vector4u8((src.r*src.a+dst.r*na)/255,
(src.g*src.a+dst.g*na)/255,
(src.b*src.a+dst.b*na)/255,
dst.a);
}
const Vector4u8 operator()(const Vector4u8 &src,const Vector4u8 &dst,const float &alpha)const
{
uint8 a=src.a*alpha;
uint8 na=255-src.a;
return Vector4u8((src.r*src.a+dst.r*na)/255,
(src.g*src.a+dst.g*na)/255,
(src.b*src.a+dst.b*na)/255,
dst.a);
}
};
template<> void bitmap::BlendBitmap<BitmapRGBA8,BitmapRGB8>::operator()(const BitmapRGBA8 *src_bitmap,BitmapRGB8 *dst_bitmap,const float alpha)const
{
if(!src_bitmap||!dst_bitmap||alpha<=0)return;
const uint width=src_bitmap->GetWidth();
const uint height=src_bitmap->GetHeight();
if(width!=dst_bitmap->GetWidth()||height!=dst_bitmap->GetHeight())
return;
Vector3u8 *dst=dst_bitmap->GetData();
const Vector4u8 *src=src_bitmap->GetData();
float a;
float na;
for(uint i=0;i<width*height;i++)
{
a=src->a*alpha;
na=255-src->a;
dst->r=(src->r*a+dst->r*na)/255;
dst->g=(src->g*a+dst->g*na)/255;
dst->b=(src->b*a+dst->b*na)/255;
++dst;
++src;
}
}
using BlendBitmapRGBA8toRGB8=bitmap::BlendBitmap<BitmapRGBA8,BitmapRGB8>;
}//namespace bitmap
}//namespace hgl

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inc/hgl/2d/DrawGeometry.h Normal file
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#pragma once
#include<hgl/2d/Bitmap.h>
#include<hgl/2d/Blend.h>
#include<hgl/math/FastTriangle.h>
namespace hgl
{
namespace bitmap
{
template<typename T,typename FormatBitmap> class DrawGeometry
{
protected:
FormatBitmap *bitmap;
T draw_color;
float alpha;
BlendColor<T> no_blend;
BlendColor<T> *blend;
public:
DrawGeometry(FormatBitmap *fb)
{
bitmap=fb;
hgl_zero(draw_color);
alpha=1;
blend=&no_blend;
}
virtual ~DrawGeometry()=default;
virtual void SetDrawColor(const T &color)
{
draw_color=color;
}
void SetBlend(BlendColor<T> *bc)
{
blend=bc;
}
void CloseBlend()
{
blend=&no_blend;
}
void SetAlpha(const float &a)
{
alpha=a;
}
bool GetPixel(int x,int y,T &color)
{
if(!data)return(false);
T *p=GetData(x,y);
if(!p)return(false);
color=*p;
return(true);
}
bool PutPixel(int x,int y)
{
if(!bitmap)return(false);
T *p=bitmap->GetData(x,y);
if(!p)return(false);
*p=(*blend)(draw_color,*p,alpha);
return(true);
}
bool DrawHLine(int x,int y,int length)
{
if(!bitmap)return(false);
const int width=bitmap->GetWidth();
const int height=bitmap->GetHeight();
if(y<0||y>=height)return(false);
if(x>=width)return(false);
if(x<0){length+=x;x=0;}
if(x+length>width)length=width-x;
if(length<=0)return(false);
T *p=bitmap->GetData(x,y);
for(int i=0;i<length;i++)
*p++=(*blend)(draw_color,*p,alpha);
return(true);
}
bool DrawBar(int l,int t,int w,int h)
{
if(!bitmap)return(false);
const int width=bitmap->GetWidth();
const int height=bitmap->GetHeight();
if(l>=width||t>=height)return(false);
if(l<0){w+=l;l=0;}
if(t<0){h+=t;t=0;}
if(l+w>width)w=width-l;
if(t+h>height)h=height-t;
if(w<=0||h<=0)return(false);
T *p=bitmap->GetData(x,y);
for(int y=t;y<t+h;y++)
{
for(int i=0;i<length;i++)
*p++=(*blend)(draw_color,*p,alpha);
p+=width-w;
}
return(true);
}
bool DrawVLine(int x,int y,int length)
{
if(!bitmap)return(false);
const int width=bitmap->GetWidth();
const int height=bitmap->GetHeight();
if(x<0||x>=width)return(false);
if(y>=height)return(false);
if(y<0){length+=y;y=0;}
if(y+length>height)length=height-y;
if(length<=0)return(false);
T *p=bitmap->GetData(x,y);
for(int i=0;i<length;i++)
{
*p=(*blend)(draw_color,*p,alpha);
p+=width;
}
return(true);
}
bool DrawWireCircle(int x0,int y0,int radius)
{
if(!bitmap)return(false);
if(radius<=0)return(false);
int tn;
int x,y;
int xmax;
y=radius;
x=0;
xmax=int(radius*HGL_SIN_45);
tn=(1-radius*2);
while(x<=xmax)
{
if(tn>=0)
{
tn+=(6+((x-y)<<2));
y--;
}
else
tn+=((x<<2)+2);
PutPixel(x0+y,y0+x);
PutPixel(x0+x,y0+y);
PutPixel(x0-x,y0+y);
PutPixel(x0-y,y0+x);
PutPixel(x0-y,y0-x);
PutPixel(x0-x,y0-y);
PutPixel(x0+x,y0-y);
PutPixel(x0+y,y0-x);
x++;
}
PutPixel(x0+y,y0+x);
PutPixel(x0+x,y0+y);
PutPixel(x0-x,y0+y);
PutPixel(x0-y,y0+x);
PutPixel(x0-y,y0-x);
PutPixel(x0-x,y0-y);
PutPixel(x0+x,y0-y);
PutPixel(x0+y,y0-x);
return(true);
}
bool DrawSolidCircle(int x,int y,int radius)
{
if(!bitmap)return(false);
if(radius<=0)return(false);
int x0=x-radius;
int y0=y-radius;
int x1=x+radius;
int y1=y+radius;
const int width=bitmap->GetWidth();
const int height=bitmap->GetHeight();
if(x0<0)x0=0;
if(y0<0)y0=0;
if(x1>=width)x1=width-1;
if(y1>=height)y1=height-1;
if(x0>x1||y0>y1)return(false);
int r2=radius*radius;
for(int cy=y0;cy<=y1;cy++)
{
int dy=cy-y;
int dy2=dy*dy;
for(int cx=x0;cx<=x1;cx++)
{
int dx=cx-x;
int dx2=dx*dx;
if(dx2+dy2<=r2)
PutPixel(cx,cy);
}
}
return(true);
}
void DrawLine(int x1, int y1, int x2, int y2)
{
int p, n, x, y, tn;
if(y1==y2)
{
if(x1>x2)
{
x=x2;x2=x1;x1=x;
}
DrawHLine(x1, y1, x2-x1+1);
return;
}
if(x1==x2)
{
if(y1>y2)
{
y=y2;y2=y1;y1=y;
}
DrawVLine(x1, y1, y2-y1+1);
return;
}
if(abs(y2-y1)<=abs(x2-x1))
{
if((y2<y1&&x2<x1)||(y1<=y2&&x1>x2))
{
x=x2;y=y2;x2=x1;y2=y1;x1=x;y1=y;
}
if(y2>=y1&&x2>=x1)
{
x=x2-x1;y=y2-y1;
p=2*y;n=2*x-2*y;tn=x;
while(x1<=x2)
{
if(tn>=0)tn-=p;
else { tn+=n;y1++; }
PutPixel(x1++, y1);
}
}
else
{
x=x2-x1;y=y2-y1;
p=-2*y;n=2*x+2*y;tn=x;
while(x1<=x2)
{
if(tn>=0)tn-=p;
else { tn+=n;y1--; }
PutPixel(x1++, y1);
}
}
}
else
{
x=x1;x1=y2;y2=x;y=y1;y1=x2;x2=y;
if((y2<y1&&x2<x1)||(y1<=y2&&x1>x2))
{
x=x2;y=y2;x2=x1;y2=y1;x1=x;y1=y;
}
if(y2>=y1&&x2>=x1)
{
x=x2-x1;y=y2-y1;p=2*y;n=2*x-2*y;tn=x;
while(x1<=x2)
{
if(tn>=0)tn-=p;
else { tn+=n;y1++; }
PutPixel(y1, x1++);
}
}
else
{
x=x2-x1;y=y2-y1;p=-2*y;n=2*x+2*y;tn=x;
while(x1<=x2)
{
if(tn>=0)tn-=p;
else { tn+=n;y1--; }
PutPixel(y1, x1++);
}
}
}
}
void DrawSector(int x0, int y0, uint r, uint stangle, uint endangle)
{
int i, j;
AutoDeleteArray<int> xy(20);
int bx, ex, bxd, exd, bxf, exf, ben;
int tn, x, y;
int xmax;
y=r; x=0;
xmax=(int)(r*HGL_SIN_45);
tn=(1-r*2);
xy[0]=x0+r;xy[1]=y0;
xy[2]=x0; xy[3]=y0-r;
xy[4]=x0; xy[5]=y0-r;
xy[6]=x0-r;xy[7]=y0;
xy[8]=x0-r;xy[9]=y0;
xy[10]=x0; xy[11]=y0+r;
xy[12]=x0; xy[13]=y0+r;
xy[14]=x0+r;xy[15]=y0;
bx=stangle/45;
ex=endangle/45;
ben=ex-bx-1;
xy[16]=(int)(r*Lcos(stangle));
xy[17]=(int)(r*Lsin(stangle));
xy[18]=(int)(r*Lcos(endangle));
xy[19]=(int)(r*Lsin(endangle));
DrawLine(x0+xy[16], y0-xy[17], x0, y0);
DrawLine(x0+xy[18], y0-xy[19], x0, y0);
if(bx==1||bx==2||bx==5||bx==6)bxd=abs(xy[16]);else bxd=abs(xy[17]);
if(ex==1||ex==2||ex==5||ex==6)exd=abs(xy[18]);else exd=abs(xy[19]);
if(bx==0||bx==2||bx==4||bx==6)bxf=0; else bxf=1;
if(ex==0||ex==2||ex==4||ex==6)exf=1; else exf=0;
while(x<=xmax)
{
if(tn>=0)
{
tn+=(6+((x-y)*4));
y--;
xy[0]--;
xy[3]++;
xy[5]++;
xy[6]++;
xy[8]++;
xy[11]--;
xy[13]--;
xy[14]--;
}
else tn+=((x*4)+2);
if(stangle<endangle)
{
j=(bx+1)*2;
for(i=0;i<ben;i++)
{
PutPixel(xy[j], xy[j+1]);
j+=2;
}
}
else if(stangle>endangle)
{
j=(bx+1)*2;
for(i=bx+1;i<8;i++)
{
PutPixel(xy[j], xy[j+1]);
j+=2;
}
j=0;
for(i=0;i<ex;i++)
{
PutPixel(xy[j], xy[j+1]);
j+=2;
}
}
i=bx*2;
if((x>bxd)^bxf)PutPixel(xy[i], xy[i+1]);i=ex*2;
if((x>exd)^exf)PutPixel(xy[i], xy[i+1]);x++;
xy[1]--;
xy[2]++;
xy[4]--;
xy[7]--;
xy[9]++;
xy[10]--;
xy[12]++;
xy[15]++;
}
}
void DrawMonoBitmap(const int left,const int top,const uint8 *data,const int w,const int h)
{
if(!data)return;
if(left<0||left>=bitmap->GetWidth()-w)return;
if(top<0||top>=bitmap->GetHeight()-h)return;
const uint8 *sp=data;
uint8 bit;
T *tp=bitmap->GetData(left,top);
const uint line_wrap=bitmap->GetWidth()-w;
bit=1<<7;
for(int row=0;row<h;row++)
{
for(int col=0;col<w;col++)
{
if(*sp&bit)
{
*tp=(*blend)(draw_color,*tp,alpha);
}
++tp;
bit>>=1;
if(bit==0)
{
++sp;
bit=1<<7;
}
}
tp+=line_wrap;
}
}
};//template<typename T,uint CHANNELS> class DrawGeometry
using DrawGeometryU32=DrawGeometry<uint32,BitmapU32>;
using DrawGeometryRGB8=DrawGeometry<Vector3u8,BitmapRGB8>;
using DrawGeometryRGBA8=DrawGeometry<Vector4u8,BitmapRGBA8>;
}//namespace bitmap
}//namespace hgl

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inc/hgl/2d/TGA.h Normal file
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#pragma once
#include<hgl/platform/Platform.h>
namespace hgl
{
namespace imgfmt
{
constexpr const uint TGA_IMAGE_TYPE_COLOR_MAP =1;
constexpr const uint TGA_IMAGE_TYPE_TRUE_COLOR =2;
constexpr const uint TGA_IMAGE_TYPE_GRAYSCALE =3;
constexpr const uint TGA_DIRECTION_LOWER_LEFT =0;
constexpr const uint TGA_DIRECTION_UPPER_LEFT =1;
#pragma pack(push,1)
struct TGAHeader
{
uint8 id;
uint8 color_map_type;
uint8 image_type; // 1 colormap image ,2 true-color,3 grayscale
uint16 color_map_first;
uint16 color_map_length;
uint8 color_map_size;
uint16 x_origin;
uint16 y_origin;
uint16 width;
uint16 height;
uint8 bit;
uint8 image_desc;
};
union TGAImageDesc
{
uint8 image_desc;
struct
{
uint alpha_depth:4;
uint reserved:1;
uint direction:1; //0 lower-left,1 upper left
};
};
#pragma pack(pop)
constexpr size_t TGAHeaderSize=sizeof(TGAHeader);
bool FillTGAHeader(TGAHeader *header,const uint16 width,const uint16 height,const uint8 channels,const uint8 single_channel_bits=8);
}//namespace imgfmt
}//namespace hgl

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src/Bitmap/BitmapTGAStream.cpp Normal file
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#include<hgl/2d/BitmapLoad.h>
#include<hgl/2d/TGA.h>
#include<hgl/io/InputStream.h>
#include<hgl/io/OutputStream.h>
namespace hgl
{
using namespace io;
using namespace imgfmt;
namespace bitmap
{
bool LoadBitmapFromTGAStream(io::InputStream *is,BitmapLoader *bl)
{
if(!is||!bl)return(false);
TGAHeader tga_header;
TGAImageDesc tga_desc;
if(is->Read(&tga_header,TGAHeaderSize)!=TGAHeaderSize)
return(false);
if(tga_header.image_type!=TGA_IMAGE_TYPE_TRUE_COLOR)
return(false);
if(tga_header.bit!=bl->OnPixelBits())
return(false);
tga_desc.image_desc=tga_header.image_desc;
void *bmp=bl->OnRecvBitmap(tga_header.width,tga_header.height);
const uint total_bytes=(tga_header.width*tga_header.height*tga_header.bit)>>3;
if(is->Read(bmp,total_bytes)!=total_bytes)
{
bl->OnLoadFailed();
return(false);
}
if(tga_desc.direction==TGA_DIRECTION_LOWER_LEFT)
bl->OnFlip();
return(true);
}
/**
* ÒÔTGA¸ñʽ±£´æBitmapÊý¾Ýµ½Á÷
*/
bool SaveBitmapToTGA(io::OutputStream *os,void *data,uint width,uint height,uint channels,uint single_channel_bits)
{
if(!os||!data||width<=0||height<=0||channels<=0||single_channel_bits<=0)
return(false);
TGAHeader tga_header;
const uint total_bytes=(width*height*channels*single_channel_bits)>>3;
FillTGAHeader(&tga_header,width,height,channels,single_channel_bits);
if(os->Write(&tga_header,TGAHeaderSize)!=TGAHeaderSize)
return(false);
if(os->Write(data,total_bytes)!=total_bytes)
return(false);
return(true);
}
}//namespace bitmap
}//namespace hgl

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src/Bitmap/tga.cpp Normal file
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#include<hgl/2d/TGA.h>
namespace hgl
{
namespace imgfmt
{
bool FillTGAHeader(TGAHeader *header,const uint16 width,const uint16 height,const uint8 channels,const uint8 single_channel_bits)
{
if(!header)return(false);
if(!width||!height)return(false);
if(channels!=1
&&channels!=3
&&channels!=4)return(false);
memset(header,0,sizeof(TGAHeader));
header->width=width;
header->height=height;
TGAImageDesc desc;
desc.image_desc=0;
if(channels==1)
{
header->image_type=3;
header->bit=single_channel_bits;
}
else
{
header->image_type=2;
header->bit=channels*single_channel_bits;
if(channels==4)
desc.alpha_depth=single_channel_bits;
}
desc.direction=TGA_DIRECTION_UPPER_LEFT;
header->image_desc=desc.image_desc;
return(true);
}
}//namespace imgfmt
}//namespace hgl