1 files changed, 67 insertions, 0 deletions
diff --git a/NvCloth/samples/SampleBase/utils/DataStream.cpp b/NvCloth/samples/SampleBase/utils/DataStream.cpp
new file mode 100644
index 0000000..c61badc
--- /dev/null
+++ b/NvCloth/samples/SampleBase/utils/DataStream.cpp
@@ -0,0 +1,67 @@
+/*
+* Copyright (c) 2008-2017, NVIDIA CORPORATION.  All rights reserved.
+*
+* NVIDIA CORPORATION and its licensors retain all intellectual property
+* and proprietary rights in and to this software, related documentation
+* and any modifications thereto.  Any use, reproduction, disclosure or
+* distribution of this software and related documentation without an express
+* license agreement from NVIDIA CORPORATION is strictly prohibited.
+*/
+
+#include "DataStream.h"
+#include <fstream>
+
+DataStream::DataStream()
+	:
+	mReadPos(0),
+	mWritePos(0)
+{
+	
+}
+DataStream::DataStream(void* data, int sizeInBytes)
+	:
+	mReadPos(0),
+	mWritePos(0)
+{
+	write(data, sizeInBytes);
+}
+DataStream::DataStream(const char* filename)
+	:
+	mReadPos(0),
+	mWritePos(0)
+{
+	std::ifstream file;
+	file.open(filename,std::ifstream::binary | std::ios::ate);
+	assert(file.good());
+
+	std::streamsize size = file.tellg();
+	mBuffer.resize(size);
+	file.seekg(0, std::ios::beg);
+	file.read(reinterpret_cast<char*>(mBuffer.data()), size);
+
+	mWritePos = size;
+	file.close();
+}
+
+bool DataStream::fileExists(const char* filename)
+{
+	std::ifstream file;
+	file.open(filename, std::ifstream::binary | std::ios::ate);
+	return file.good();
+}
+
+void DataStream::saveToFile(const char* filename)
+{
+	std::ofstream file(filename, std::fstream::binary | std::fstream::trunc);
+	file.write(reinterpret_cast<char*>(mBuffer.data()), mBuffer.size());
+	file.flush();
+	file.close();
+}
+
+void DataStream::write(void* data, int sizeInBytes)
+{
+	if((int)mBuffer.size() < mWritePos + sizeInBytes)
+		mBuffer.resize(mWritePos + sizeInBytes);
+	memcpy(&mBuffer[mWritePos], data, sizeInBytes);
+	mWritePos += sizeInBytes;
+}
+\ No newline at end of file