/* * Copyright (C) 2001-2003, R3vis Corporation. * * 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, * or visit http://www.gnu.org/copyleft/gpl.html. * * Contributor(s): * Wes Bethel, R3vis Corporation, Marin County, California * * The OpenRM project is located at http://openrm.sourceforge.net/. */ /* * $Id: offscreen.c,v 1.9 2003/07/25 21:56:43 wes Exp $ * $Revision: 1.9 $ * $Name: OpenRM-1-5-2-RC1 $ * $Log: offscreen.c,v $ * Revision 1.9 2003/07/25 21:56:43 wes * Bug fix: post-render callback wasn't being assigned under Win32. * * Revision 1.8 2003/04/13 18:13:23 wes * Updated copyright dates. * * Revision 1.7 2003/01/27 05:07:07 wes * Changes to RMpipe initialization sequence APIs. Tested for GLX, but not WGL. * * Revision 1.6 2003/01/16 22:22:45 wes * Updated all source files to reflect new organization of header files: all * headers that were formerly located in include/rmaux, include/rmv and * include/rmi are now located in include/rm. * * Revision 1.5 2002/06/17 00:39:58 wes * replaced rmSubtreeFrame with rmFrame. * * Revision 1.4 2001/10/15 00:23:52 wes * Use new rmPipeSetOffscreenWindow() routine. * * Revision 1.3 2001/07/15 22:33:19 wes * Added rmPipeDelete to the end of all demo progs. For those that use * an initfunc, added a new RMnode * parm (which is unused, except for rm2screen). * * Revision 1.2 2001/06/03 19:41:18 wes * Replace call to create an AVS format image with a call to * create a JPEG image. * * Revision 1.1 2001/03/31 17:26:14 wes * Initial entry. * */ #include <rm/rm.h> #include <rm/rmaux.h> #include <rm/rmv.h> #include "libdio.h" #include "procmode.h" int imgWidth=800,imgHeight=600; static char MyRootName[]={"MyRoot"}; static RMnode *MyRoot; char datafilename[256]={"data/volume.dio"}; dioDataObject *mydataobj=NULL; int do_color=0; int do_print=0; int vis_technique=0; int my_linewidth = RM_LINEWIDTH_MEDIUM; int my_linestyle = RM_LINES_SOLID; float isolevel=0.5; int use_secondary=0; dioDataObject *secondary=NULL; RMvisMap *vmap=NULL; #define DO_OFFSCREEN 1 /* * Colorization notes: * 1. when a secondary dataset is provided, the isosurface will be * vertex-colorized by: * 2. at each isosurface triangle vertex, the rmv routine that generates * the isosurface will invoke the app callback to retrieve * data values from the secondary dataset. the RGB(A) color value * from the visualization colormap that corresponds to the data value * from the secondary dataset will be used as the vertex color. * 3. since it is an app callback that provides the secondary data values * via a callback, there is no restriction that says the actual * size, or even dimensionality, of the secondary dataset must be * the same as the primary dataset. * 4. this demo maps the min/max of the secondary data set to the min/max * transfer function values. * 5. this demo uses the primary dataset as the source of the secondary * dataset. that means that we should see an isosurface of constant * color, where the color will essentially be a function of the * isocontouring level. */ void usage(char *av[]) { char buf[256]; sprintf(buf," usage: %s [-i datafilename (defaults to data/volume.dio) [-w imgWidth] [-h imgHeight] [-p (print the scene graph to stderr)] [-l isolevel (isocontouring level, default is 0.5, use a value in range 0..1.0 with the default data set)] \n",av[0]); #ifdef RM_WIN MessageBox(NULL,buf,"vis3d",MB_OK); #else fprintf(stderr,"%s",buf); #endif } void parse_args(int ac, char *av[]) { int i; i = 1; while (i < ac) { if (strcmp(av[i],"-w") == 0) { i++; sscanf(av[i],"%d",&imgWidth); } else if (strcmp(av[i],"-h") == 0) { i++; sscanf(av[i],"%d",&imgHeight); } else if (strcmp(av[i],"-i") == 0) { i++; strcpy(datafilename,av[i]); } else if (strcmp(av[i],"-2") == 0) { use_secondary=1; } else if (strcmp(av[i],"-l") == 0) { i++; sscanf(av[i],"%f",&isolevel); } else if (strcmp(av[i],"-c") == 0) { do_color=1; } else if (strcmp(av[i],"-p") == 0) do_print = 1; else { usage(av); exit(-1); } i++; } } void my_read_data(char *datafilename) { mydataobj = dioReadDataObject(datafilename); if (mydataobj == NULL) { fprintf(stderr," error reading input data file. exiting. \n"); exit(-1); } dioObjectConditioner(mydataobj); } void my_set_scene(int stereo_format) { RMcamera3D *c=rmCamera3DNew(); rmDefaultCamera3D(c); /* assign it some default values. */ rmCamera3DComputeViewFromGeometry(c,MyRoot, imgWidth, imgHeight); if (stereo_format != RM_MONO_CHANNEL) { rmCamera3DSetStereo(c,RM_TRUE); rmCamera3DSetEyeSeparation(c,2.5F); rmCamera3DSetFocalDistance (c,0.707F); } /* add the 3D camera as a scene parameter to rmRootNode() */ rmNodeSetSceneCamera3D(rmRootNode(),c); rmCamera3DDelete(c); /* use RM's default lighting model */ rmDefaultLighting(rmRootNode()); } /* * the following two routines are the interface between the RMV * vis tools and the local data model. RMV wants us to supply routines * which will tell the vis tool what the (x,y,z) point is at some grid * location, and what the data point is at some grid location. * * the local data model is very simple, so we can make simplifying * assumptions resulting in very terse routines. */ RMvertex3D mygridfunc_uvw(int i, int j, int k, int isize, int jsize, int ksize, float *baseX, float *baseY, float *baseZ) { /* * tell RMV what this grid (x,y,z) point is at location (i,j,k). * we assume the data model is sufficiently intelligent to know * it's own dimensions, and is capable of dealing with a three-dimensional * indexing system. * * we assume that the "i" index maps to width, and that "j" * maps to height, and k maps to depth in the local data model. */ RMvertex3D temp3d; int indx; /* indx = mydataobj->width * j + i; */ /* indx = mydataobj->dims[0] * j + i + mydataobj->dims[0]*mydataobj->dims[1]*k; */ indx = isize * j + i + isize*jsize*k; temp3d.x = baseX[indx]; temp3d.y = baseY[indx]; temp3d.z = baseZ[indx]; return(temp3d); } float mydatafunc_uvw(int i, int j, int k, int isize, int jsize, int ksize, float *baseData) { /* * tell RMV what the data value is at grid location (i,j,k). we * assume an n-dimensional array can be accesses as if it * were a one-d array. */ int indx; /* indx = mydataobj->dims[0] * j + i + mydataobj->dims[0]*mydataobj->dims[1]*k; */ indx = isize * j + i + isize*jsize*k; return(baseData[indx]); } void my_build_objs(void) { RMnode *visnode; MyRoot = rmNodeNew(MyRootName,RM_RENDERPASS_3D, RM_RENDERPASS_OPAQUE); rmNodeAddChild(rmRootNode(),MyRoot); visnode = rmNodeNew("vis",RM_RENDERPASS_3D, RM_RENDERPASS_OPAQUE); rmvK3MarchingCubes(mygridfunc_uvw, mydatafunc_uvw, /* note this is a hack - we should really be using a secondary dataset that is different from the primary dataset. since we're just reusing the primary dataset, what we'll get is a constant- colored isosurface, and the color changes when we change the isocontouring level via the command line*/ (secondary != NULL) ? mydatafunc_uvw : NULL, vmap, mydataobj->width, mydataobj->height, mydataobj->depth, isolevel, visnode, mydataobj->xcoords, mydataobj->ycoords, mydataobj->zcoords, mydataobj->rawdata); rmNodeAddChild(MyRoot,visnode); /* * set the bounding box for the visnode as a function of * the extents of the underlying grid, not the extents of * the derived isosurface. */ rmNodeSetBoundingBox(visnode, (RMvertex3D *)&(mydataobj->corners[0]), (RMvertex3D *)&(mydataobj->corners[1])); rmNodeComputeCenterFromBoundingBox(visnode); rmNodeUnionAllBoxes(rmRootNode()); rmNodeComputeCenterFromBoundingBox(MyRoot); { RMcolor4D bgcolor={0.2,0.2,0.3,1.0}; /* * assign a background color to take effect at "MyRoot" */ rmNodeSetSceneBackgroundColor(MyRoot,&bgcolor); } dioDeleteDataObject(mydataobj); } void my_idle_func(RMpipe *p, int ix, int iy) { RMmatrix m,old; double d,c,s; rmMatrixIdentity(&m); d = RM_DEGREES_TO_RADIANS(1.0); c = cos(d); s = sin(d); m.m[0][0] = m.m[2][2] = c; m.m[0][2] = -s; m.m[2][0] = s; if (rmNodeGetRotateMatrix(MyRoot,&old) == RM_WHACKED) rmMatrixIdentity(&old); rmMatrixMultiply(&old,&m,&old); rmNodeSetRotateMatrix(MyRoot,&old); rmFrame(p, rmRootNode()); } void setup_secondary_dataobj() { secondary = mydataobj; vmap = rmDefaultVismap(); rmVismapSetTfMin(vmap,mydataobj->datamin); rmVismapSetTfMax(vmap,mydataobj->datamax); } void myDumpImageFunc(const RMimage *img, RMenum whichPass) { char fname[]={"offscreen.jpg"}; printf(" Writing JPEG image file named %s ...", fname); fflush(stdout); rmiWriteJPEG(fname, 100, img); printf(" ..done \n"); fflush(stdout); } void myinitfunc(RMpipe *p) { my_read_data(datafilename); if (use_secondary == 1) setup_secondary_dataobj(); my_build_objs(); my_set_scene(rmPipeGetChannelFormat(p)); /* * set up the event handler to apply geometric transformations at * MyRoot. note that the lights and cameras are placed at rmRootNode(). * therefore, the rotations & scaling applied at MyRoot do not affect * the cameras & lights since they are at a higher level in the * scene graph than MyRoot. */ rmauxSetGeomTransform(MyRoot,p); rmauxSetCamera3DTransform(rmRootNode(), p); if (do_print == 1) /* won't see output in win32 unless you change NULL to a char string with a filename, then the output will be written in ASCII format to that file. */ rmPrintSceneGraph(rmRootNode(),RM_PRINT_VERBOSE,NULL); } void myrenderfunc(RMpipe *p, RMnode *n) { rmStatsStartTime(); rmFrame(p, n); rmStatsEndTime(); rmStatsPrint(); } #ifdef RM_WIN int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow) { MSG msg; HWND hWnd; void *fptr; int status; RMpipe *lone_pipe = NULL; RMenum targetPlatform = RM_PIPE_WGL; RMenum processingMode = RM_PIPE_MULTISTAGE; /* don't use MP mode! */ RMenum channelFormat; parse_args(__argc, __argv); #else /* assume RM_X */ int main(int ac, char *av[]) { int status; RMpipe *lone_pipe = NULL; RMenum processingMode = RM_PIPE_MULTISTAGE; /* don't use MP mode! */ RMenum targetPlatform = RM_PIPE_GLX; RMenum channelFormat; void *msg; /* needed for rmauxEventLoop win32/unix API consistency */ parse_args(ac, av); #endif /* * pick a stereo format: * RM_MONO_CHANNEL - plain old single-view * RM_REDBLUE_STEREO_CHANNEL - left channel in red, right channel in cyan * RM_BLUERED_STEREO_CHANNEL - left in cyan, right in red * RM_MBUF_STEREO_CHANNEL - multibuffered stereo, requires special * hardware. */ #if DO_OFFSCREEN channelFormat = RM_OFFSCREEN_MONO_CHANNEL; #else channelFormat = RM_MONO_CHANNEL; #endif /* * first stage of RM initialization. */ rmInit(); /* * create the rendering pipe. this step is required in both * Win32 and X. */ lone_pipe = rmPipeNew(targetPlatform); rmPipeSetChannelFormat(lone_pipe, channelFormat); rmPipeSetProcessingMode(lone_pipe, processingMode); #if DO_OFFSCREEN #ifdef RM_WIN { /* * Win32: when a window is created, we have to tell windows the * name of the "WndProc," the procedure that gets called by * windows with events (the event loop) (contrast to the X model * where the name of the event loop is not part of the window). * Since we're using RMaux, we know about the event handling * procedure named "rmauxWndProc" and we provide that here. */ fptr = (void *)(rmauxWndProc); hWnd = rmauxCreateOffscreenDrawable(lone_pipe, imgWidth,imgHeight,16, hInstance,fptr); if (hWnd == 0) exit(-1); /* * assign the new window handle to the rendering pipe. */ rmPipeSetWindow(lone_pipe,hWnd, imgWidth, imgHeight); } #endif #ifdef RM_X { GLXPixmap glxp; glxp = rmauxCreateOffscreenDrawable(lone_pipe, imgWidth, imgHeight, DefaultDepth(rmxPipeGetDisplay(lone_pipe), DefaultScreen(rmxPipeGetDisplay(lone_pipe)))); /* * assign the offscreen window to the rendering pipe. */ rmPipeSetOffscreenWindow(lone_pipe, glxp, imgWidth, imgHeight); } #endif rmPipeSetPostRenderFunc(lone_pipe, myDumpImageFunc); #else /* do interactive stuff */ #ifdef RM_WIN { /* * Win32: when a window is created, we have to tell windows the * name of the "WndProc," the procedure that gets called by * windows with events (the event loop) (contrast to the X model * where the name of the event loop is not part of the window). * Since we're using RMaux, we know about the event handling * procedure named "rmauxWndProc" and we provide that here. */ fptr = (void *)(rmauxWndProc); hWnd = rmauxCreateW32Window(lone_pipe, NULL, /* no parent window */ 20,20,imgWidth,imgHeight,"RM for Windows", hInstance,fptr); if (hWnd == 0) exit(-1); /* * assign the new window handle to the rendering pipe. */ rmPipeSetWindow(lone_pipe,hWnd, imgWidth, imgHeight); } #endif #ifdef RM_X { Window w; int managed = RM_TRUE; w = rmauxCreateXWindow(lone_pipe, (Window)NULL, /* parent window */ 0,0,imgWidth,imgHeight, "RM for X-Windows","icon-title",managed); /* * assign the window to the rendering pipe. */ rmPipeSetWindow(lone_pipe,w,imgWidth,imgHeight); } #endif #endif rmPipeMakeCurrent(lone_pipe); myinitfunc(lone_pipe); #if DO_OFFSCREEN rmFrame(lone_pipe, rmRootNode()); #else rmFrame(lone_pipe, rmRootNode()); rmauxSetKeyFunc(lone_pipe, rmauxDefaultKeyFunc); rmauxSetRenderFunc(myrenderfunc); rmauxEventLoop(lone_pipe,rmRootNode(), &msg); #endif rmPipeDelete(lone_pipe); rmFinish(); #ifdef RM_WIN return( msg.wParam ); #else return(1); #endif }