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igl/external/embree/examples/tutorial02/tutorial02.cpp
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103 lines
3.5 KiB
C++

// ======================================================================== //
// Copyright 2009-2013 Intel Corporation //
// //
// Licensed under the Apache License, Version 2.0 (the "License"); //
// you may not use this file except in compliance with the License. //
// You may obtain a copy of the License at //
// //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
// Unless required by applicable law or agreed to in writing, software //
// distributed under the License is distributed on an "AS IS" BASIS, //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and //
// limitations under the License. //
// ======================================================================== //
#include "sys/platform.h"
#include "sys/ref.h"
#include "lexers/streamfilters.h"
#include "lexers/parsestream.h"
#include "../tutorials/glutdisplay.h"
#include "../tutorial_host/tutorials_host.h"
namespace embree
{
/* name of the tutorial */
const char* tutorialName = "tutorial02";
/* flags */
static int g_verbose = 0;
/* output settings */
static size_t g_width = 512;
static size_t g_height = 512;
static bool g_fullscreen = false;
static void parseCommandLine(Ref<ParseStream> cin, const FileName& path)
{
while (true)
{
std::string tag = cin->getString();
if (tag == "") return;
/* parse command line parameters from a file */
if (tag == "-c") {
FileName file = path + cin->getFileName();
parseCommandLine(new ParseStream(new LineCommentFilter(file, "#")), file.path());
}
/* parse camera parameters */
else if (tag == "-vp") g_camera.from = cin->getVector3f();
else if (tag == "-vi") g_camera.to = cin->getVector3f();
else if (tag == "-vd") g_camera.to = g_camera.from + cin->getVector3f();
else if (tag == "-vu") g_camera.up = cin->getVector3f();
else if (tag == "-fov") g_camera.fov = cin->getFloat();
/* frame buffer size */
else if (tag == "-size") {
g_width = cin->getInt();
g_height = cin->getInt();
}
/* full screen mode */
else if (tag == "-fullscreen")
g_fullscreen = true;
/*! enable verbose output mode */
else if (tag == "-verbose") {
g_verbose = 1;
}
/* skip unknown command line parameter */
else {
std::cerr << "unknown command line parameter: " << tag << " ";
while (cin->peek() != "" && cin->peek()[0] != '-') std::cerr << cin->getString() << " ";
std::cerr << std::endl;
}
}
}
/* main function in embree namespace */
int main(int argc, char** argv)
{
/* create stream for parsing */
Ref<ParseStream> stream = new ParseStream(new CommandLineStream(argc, argv));
/* parse command line */
parseCommandLine(stream, FileName());
/* initialize ISPC */
init(g_verbose);
/* initialize GLUT */
initGlut("tutorial02",g_width,g_height,g_fullscreen,true);
return 0;
}
}
int main(int argc, char** argv) {
return embree::main(argc, argv);
}