3DVIEW.C

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/* --
OpenFX version 2.x - Modelling, Animation and Rendering Package
Copyright (C) 2000  - OpenFX Development Team

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

You may contact the OpenFX development team via elecronic mail
at core@openfx.org, or visit our website at http://openfx.org for
further information and support details.
-- */

/* 3DVIEW.C   */

#include <math.h>
#include <windows.h>

#include "3dview.h"

#if __X__MIPS__
BOOL WINAPI _CRT_INIT(HINSTANCE ,DWORD , LPVOID );
#endif

static HINSTANCE hDLLinstance=NULL; /* use to pick up resources from DLL   */

#include "..\animate\astruct.h"
#include "..\animate\dstruct.h"

#ifndef min
#define min(a,b)  ( ((a) < (b)) ? (a) : (b) )
#endif
#ifndef max
#define max(a,b)  ( ((a) > (b)) ? (a) : (b) )
#endif

#if __WATCOMC__
int APIENTRY LibMain(HANDLE hDLL, DWORD dwReason, LPVOID lpReserved){
#else
BOOL WINAPI DllMain(HANDLE hDLL, DWORD dwReason, LPVOID lpReserved){
#endif
  switch (dwReason) {
    case DLL_PROCESS_ATTACH:
#if __X__MIPS__
      if(!_CRT_INIT(hDLL,dwReason,lpReserved))return(int)FALSE;
#endif
      hDLLinstance = hDLL;  /* handle to DLL file */
      break;
    case DLL_PROCESS_DETACH:
#if __X__MIPS__
      if(!_CRT_INIT(hDLL,dwReason,lpReserved))return(int)FALSE;
#endif
      break;
  }
return (int)TRUE;
}

#if __SC__
#pragma startaddress(LibMain)
#endif


BOOL _ExternalPreset(HWND parent, ANI_STRUCTURE *lpevi){
 object   *Op;
 position *Pp,*Pc,*Pl;
 align    *Ap;
 char f_name[256],f_dir[256];
 int i,j,k,nfi,nalpha,nf;
 double fi,alpha,dfi,dalpha;
 long xmax,ymax,zmax,size,xmin,ymin,zmin;
 lpEVI=lpevi;
 LoadString(hDLLinstance,IDS_TITLE,f_name,256);
 MessageBox(parent,f_name,"3D View",MB_OK);
 nfi=18;
 nalpha=11;
 nf=nfi*nalpha;
 fi = -180.0; alpha = -75.0;
 dfi=fabs(2.0*fi/(double)nfi);
 dalpha=2.0*fabs(alpha/(double)nalpha);
 SetNumberOfFrames((short)nf);
 /* add Camera position channel and move the camera - Camera always present */
 if(CreatePosition(FirstNp,1,(short)Nframes) == NULL)return FALSE;
 Pc=FirstNp->fpos;
 FirstNp->fpos->finish[0]=0;
 FirstNp->fpos->finish[1]=TVpointY+TVsizeY*2;
 FirstNp->fpos->finish[2]=0;
 /* create a Target Actor and Costume default at (0,0,0) */
 if(CreateNode() == NULL)return FALSE;
 strcpy(MainNp->actorname,"Target");
 MainNp->type=TARGET;
 if((Op=CreateCostume(MainNp,1,(short)Nframes)) == NULL)return FALSE;
 Op->type=MainNp->type;
 /* Now point the Camera to Look at the target */
 if(CreateAlign(FirstNp,1,(short)Nframes) == NULL)return FALSE;
 FirstNp->fali->type=TRACK; FirstNp->fali->topath=MainNp;
 /* Now load a light actor */
 if(CreateNode() == NULL)return FALSE;
 strcpy(MainNp->actorname,"Light");
 MainNp->type=LIGHT;
 if((Op=CreateCostume(MainNp,1,Nframes)) == NULL)return FALSE;
 Op->type=MainNp->type;
 Op->lighttype=SPHERE; Op->colour[0]=Op->colour[1]=Op->colour[2]=255;
 /* Position Channel for Light */
 if((Pp=CreatePosition(MainNp,1,(short)Nframes)) == NULL)return FALSE;
 Pl=Pp;
 Pp->finish[0]=0;
 Pp->finish[1]=FirstNp->fpos->finish[1]+TVsizeY;
 Pp->finish[2]=0;
 /* Add Actor with Chosen Model for Costume */
 if(CreateNode() == NULL)return FALSE;
 strcpy(MainNp->actorname,"Actor");
 MainNp->type=NORMAL;
 if((Op=CreateCostume(MainNp,1,(short)Nframes)) == NULL)return FALSE;
 Op->type=MainNp->type;
 strcpy(f_dir,gszHomeDir); strcat(f_dir,"objects"); strcpy(f_name,"*.mfx");
 if(SelectFileName(0,f_name,f_dir,"Choose Model To View",
                   "(*.MFX)|*.mfx|",parent) == TRUE){
   strcpy(Op->name,f_name);
   Op->morph=NO;
   if(LoadMeshObject(f_name,Op,YES,YES,NO) == FAIL)DeleteCostume(MainNp,1);
 }
 else return FALSE;
 /* put camera so that it shows object */
 if(Op->npoints > 0 && Op->points != NULL){
   xmax=ymax=zmax=size= -MAXUNIT;
   xmin=ymin=zmin=MAXUNIT;
   for(i=0;i<Op->npoints;i++){
     if(Op->points[i][0]  > xmax)xmax=Op->points[i][0];
     if(Op->points[i][1]  > ymax)ymax=Op->points[i][1];
     if(Op->points[i][2]  > zmax)zmax=Op->points[i][2];
     if(Op->points[i][0]  < xmin)xmin=Op->points[i][0];
     if(Op->points[i][1]  < ymin)ymin=Op->points[i][1];
     if(Op->points[i][2]  < zmin)zmin=Op->points[i][2];
   }
   size=max(xmax-xmin,ymax-ymin);
   size=max(size,zmax-zmin);
   Pc->finish[1]=TVpointY+max(size*3,TVsizeY*2);
   Pl->finish[1]=Pc->finish[1]+TVsizeY*2;
 }
 k=1;
 for(j=0;j<nalpha;j++){
   if((Ap=CreateAlign(MainNp,k,k+nfi-1)) == NULL)return FALSE;
   Ap->type=TWEEN;
   Ap->im=1; Ap->ima=1.0;
   Ap->alpha=(alpha+(double)j*dalpha);
   k += nfi;
 }
 return TRUE;
}