first commit

Minecraft.World/FloatBuffer.cpp

@@ -0,0 +1,66 @@
+#include "stdafx.h"
+#include "FloatBuffer.h"
+
+//Allocates a new float buffer.
+//The new buffer's position will be zero, its limit will be its capacity, and its mark will be undefined.
+//It will have a backing array, and its array offset will be zero.
+//
+//Parameters:
+//capacity - The new buffer's capacity, in floats
+FloatBuffer::FloatBuffer(unsigned int capacity) : Buffer( capacity )
+{
+	buffer = new float[capacity];
+	memset( buffer,0,sizeof(float)*capacity);
+}
+
+FloatBuffer::FloatBuffer( unsigned int capacity, float *backingArray ) : Buffer( capacity )
+{
+	hasBackingArray = true;
+	buffer = backingArray;
+}
+
+FloatBuffer::~FloatBuffer()
+{
+	if( !hasBackingArray )
+		delete[] buffer;
+}
+
+//Flips this buffer. The limit is set to the current position and then the position is set to zero.
+//If the mark is defined then it is discarded.
+//
+//Returns:
+//This buffer
+FloatBuffer *FloatBuffer::flip()
+{
+	m_limit = m_position;
+	m_position = 0;
+	return this;
+}
+
+//Relative put method  (optional operation).
+//Writes the given float into this buffer at the current position, and then increments the position.
+//
+//Parameters:
+//f - The float to be written
+//Returns:
+//This buffer
+FloatBuffer *FloatBuffer::put(float f)
+{
+	buffer[m_position++] = f;
+	return this;
+}
+
+//Relative bulk get method.
+//This method transfers floats from this buffer into the given destination array.
+//An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocation
+//
+//     src.get(a, 0, a.length) 
+//Returns:
+//This buffer
+void FloatBuffer::get(floatArray *dst)
+{
+	assert( dst->length <= m_capacity );
+
+	for (unsigned int i = 0; i < dst->length; i++)
+		dst->data[i] = buffer[i]; 
+}