3DS读取Word格式文档下载.docx
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vector<
tMaterialInfo>
pMaterials;
//存贮materials信息的列表
t3DObject>
pObject;
//存贮object信息的列表
};
2．tMaterialInfo：
structtMaterialInfo
charstrName[255];
//材质的名字
charstrFile[255];
//材质的文件名（真正存在harddisk的bmp）
BYTEcolor[3];
//object的颜色（RGB）（0~255）
InttexureId;
//材质的ID
}
3．3DObject：
structt3DObject
intnumOfVerts;
//object的顶点数
intnumOfFaces;
//object的面数
intnumTexVertex;
//材质坐标的个数
intmaterialID;
//材质ID，正是材质数组中的索引
boolbHasTexture;
//有材质就为真
//object的名字
CVector3*pVerts;
//object的顶点，将会指向一个数组
CVector3*pNormals;
//object的法线（只是一个近似的法线）将会指向一个数组
CVector3*pFaceNorm;
//面的法线，将会指向一个数组
CVector3*pFaceVert1;
//面的顶点x，将会指向一个数组
CVector3*pFaceVert2;
//面的顶点y，将会指向一个数组
CVector3*pFaceVert3;
//面的顶点z，将会指向一个数组
CVector2*pTexVerts;
//材质的坐标（二维）将会指向一个数组
tFace*pFaces;
//面的结构（在后面有注解）将会指向一个数组
其中：
structtFace
intvertIndex[3];
//组成面三角形顶点的索引（整型）
intcoordIndex[3];
//组成面三角形材质的索引（整型）
6.33D动画的实现
读取3DS文件的全部操作封装在了CLoad3DS类中，有关CLoad3DS类的具体定义所附光盘中的源程序3ds.cppand3ds.h。
/////////////////////////////////IMPORT3DS\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*
//
//Thisiscalledbytheclienttoopenthe.3dsfile,readit,thencleanup
//////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*
boolCLoad3DS:
:
Import3DS（t3DModel*pModel,char*strFileName）
charstrMessage[255]={0};
//Openthe3DSfile
m_FilePointer=fopen（strFileName,"
rb"
）;
//Makesurewehaveavalidfilepointer（wefoundthefile）
if（!
m_FilePointer）
{
sprintf（strMessage,"
Unabletofindthefile:
%s!
"
strFileName）;
MessageBox（NULL,strMessage,"
Error"
MB_OK）;
returnfalse;
}
//Oncewehavethefileopen,weneedtoreadtheveryfirstdatachunk
//toseeifit'
sa3DSfile.Thatwaywedon'
treadaninvalidfile.
//Ifitisa3DSfile,thenthefirstchunkIDwillbeequaltoPRIMARY（somehexnum）
//Readthefirstchuckofthefiletoseeifit'
sa3DSfile
ReadChunk（m_CurrentChunk）;
//Makesurethisisa3DSfile
if（m_CurrentChunk->
ID!
=PRIMARY）
UnabletoloadPRIMARYchuckfromfile:
//Nowweactuallystartreadinginthedata.ProcessNextChunk（）isrecursive
//Beginloadingobjects,bycallingthisrecursivefunction
ProcessNextChunk（pModel,m_CurrentChunk）;
//Afterwehavereadthewhole3DSfile,wewanttocalculateourownvertexnormals.
ComputeNormals（pModel）;
//Cleanupaftereverything
CleanUp（）;
returntrue;
See光盘中的源程序StepinGlView.cpp
//StepinGlView.cpp:
implementationoftheCStepinGlViewclass
……
#include"
main.h"
//Thisincludesourheaderfile
3ds.h"
//Includethe3DSheaderfile.
#defineFILE_NAME"
moon.3ds"
//Thisisthe3Dfilewewillload.
UINTg_Texture[MAX_TEXTURES]={0};
//Thisholdsthetextureinfo,referencedbyanID
CLoad3DSg_Load3ds;
//Thisis3DSclass.Thisshouldgoinagoodmodelclass.
t3DModelg_3DModel;
//Thisholdsthe3DModelinfothatweloadin
intg_ViewMode=GL_TRIANGLES;
//Wewantthedefaultdrawingmodetobenormal
boolg_bLighting=true;
//Turnlightingoninitially
floatg_RotateX=0.0f;
//Thisisthecurrentvalueatwhichthemodelisrotated
floatg_RotationSpeed=0.8f;
//Thisisthespeedthatourmodelrotates.（-speedrotatesleft）
/////////////////////////////////////////////////////////////////////////////
//CStepinGlViewmessagehandlers
voidCStepinGlView:
Init（）
PIXELFORMATDESCRIPTORpfd;
intn;
HGLRChrc;
m_pDC=newCClientDC（this）;
ASSERT（m_pDC!
=NULL）;
if（!
bSetupPixelFormat（））
return;
n=:
GetPixelFormat（m_pDC->
GetSafeHdc（））;
:
DescribePixelFormat（m_pDC->
GetSafeHdc（）,n,sizeof（pfd）,&
pfd）;
hrc=wglCreateContext（m_pDC->
wglMakeCurrent（m_pDC->
GetSafeHdc（）,hrc）;
GetClientRect（&
m_oldRect）;
glClearDepth（1.0f）;
glEnable（GL_DEPTH_TEST）;
//glMatrixMode（GL_MODELVIEW）;
//glLoadIdentity（）;
g_Load3ds.Import3DS（&
g_3DModel,FILE_NAME）;
//Loadour.3DSfileintoourmodelstructure
//Dependingonhowmanytextureswefound,loadeachone（Assuming.BMP）
//Ifyouwanttoloadotherfilesthanbitmaps,youwillneedtoadjustCreateTexture（）.
//Below,wegothroughallofthematerialsandcheckiftheyhaveatexturemaptoload.
//Otherwise,thematerialjustholdsthecolorinformationandwedon'
tneedtoloadatexture.
//Gothroughallthematerials
for（inti=0;
i<
g_3DModel.numOfMaterials;
i++）
//Checktoseeifthereisafilenametoloadinthismaterial
if（strlen（g_3DModel.pMaterials[i].strFile）>
0）
{
//Usethenameofthetexturefiletoloadthebitmap,withatextureID（i）.
//Wepassinourglobaltexturearray,thenameofthetexture,andanIDtoreferenceit.
CreateTexture（g_Texture,g_3DModel.pMaterials[i].strFile,i）;
}
//SetthetextureIDforthismaterial
g_3DModel.pMaterials[i].texureId=i;
glLightfv（GL_LIGHT0,GL_AMBIENT,m_lightAmb）;
glLightfv（GL_LIGHT0,GL_DIFFUSE,m_lightDif）;
glLightfv（GL_LIGHT0,GL_SPECULAR,m_lightSpe）;
glLightfv（GL_LIGHT0,GL_POSITION,m_lightPos）;
glEnable（GL_LIGHT0）;
//Turnonalightwithdefaultsset
glEnable（GL_LIGHTING）;
//Turnonlighting
glEnable（GL_COLOR_MATERIAL）;
//Allowcolor
DrawScene（）
glClearColor（0.0f,0.0f,0.0f,1.0f）;
glClear（GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT）;
glMatrixMode（GL_MODELVIEW）;
glLoadIdentity（）;
glTranslatef（m_posx,m_posy,-5.0f）;
glRotatef（m_fAngleY,0.0f,1.0f,0.0f）;
glRotatef（m_fAngleZ,0.0f,0.0f,1.0f）;
for（inti=0;
g_3DModel.numOfObjects;
//Makesurewehavevalidobjectsjustincase.（size（）isinthevectorclass）
if（g_3DModel.pObject.size（）<
=0）break;
//Getthecurrentobjectthatwearedisplaying
t3DObject*pObject=&
g_3DModel.pObject[i];
//Checktoseeifthisobjecthasatexturemap,ifsobindthetexturetoit.
if（pObject->
bHasTexture）{
//Turnontexturemappingandturnoffcolor
glEnable（GL_TEXTURE_2D）;
//Resetthecolortonormalagain
glColor3ub（255,255,255）;
//Bindthetexturemaptotheobjectbyit'
smaterialID
glBindTexture（GL_TEXTURE_2D,g_Texture[pObject->
materialID]）;
}else{
//Turnofftexturemappingandturnoncolor
glDisable（GL_TEXTURE_2D）;
//Thisdeterminesifweareinwireframeornormalmode
glBegin（g_ViewMode）;
//Begindrawingwithourselectedmode（trianglesorlines）
//Gothroughallofthefaces（polygons）oftheobjectanddrawthem
for（intj=0;
j<
pObject->
numOfFaces;
j++）
{
//Gothrougheachcornerofthetriangleanddrawit.
for（intwhichVertex=0;
whichVertex<
3;
whichVertex++）
{
//Gettheindexforeachpointoftheface
intindex=pObject->
pFaces[j].vertIndex[whichVertex];
//GiveOpenGLthenormalforthisvertex.
glNormal3f（pObject->
pNormals[index].x,pObject->
pNormals[index].y,pObject->
pNormals[index].z）;
//Iftheobjecthasatextureassociatedwithit,giveitatexturecoordinate.
if（pObject->
//MakesuretherewasaUVWmapappliedtotheobjectorelseitwon'
thavetexcoords.
if（pObject->
pTexVerts）{
glTexCoord2f（pObject->
pTexVerts[index].x,pObject->
pTexVerts[index].y）;
}
}else{
//Makesurethereisavalidmaterial/colorassignedtothisobject.
//Youshouldalwaysatleastassignamaterialcolortoanobject,
//butjustincasewewanttocheckthesizeofthemateriallist.
//ifthesizeisatleastone,andthematerialID!
=-1,
//thenwehaveavalidmaterial.
if（g_3DModel.pMaterials.size（）&
&
materialID>
=0）
{
//Getandsetthecolorthattheobjectis,sinceitmustnothaveatexture
BYTE*pColor=g_3DModel.pMaterials[pObject->
materialID].color;
//Assignthecurrentcolortothismodel
glColor3ub（pColor[0],pColor[1],pColor[2]）;
}
//Passinthecurrentvertexoftheobject（Cornerofcurrentface）
glVertex3f（pObject->
pVerts[index].x,pObject->
pVerts[index].y,pObject->
pVerts[index].z）;
}
}
glEnd（）;
//Endthedrawing
glFinish（）;
SwapBuffers（wglGetCurrentDC（））;
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