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utils/nvtristriplib/vertexcache.cpp

@@ -0,0 +1,88 @@
+
+
+#include "VertexCache.h"
+
+VertexCache::VertexCache()
+{
+  VertexCache(16);
+}
+
+
+VertexCache::VertexCache(int size)
+{
+  numEntries = size;
+
+  entries = new unsigned short[numEntries];
+
+  for(int i = 0; i < numEntries; i++)
+    entries[i] = -1;
+}
+
+
+VertexCache::~VertexCache()
+{
+  delete[] entries;
+}
+
+
+int VertexCache::At(int index)
+{
+  return entries[index];
+}
+
+
+void VertexCache::Set(int index, int value)
+{
+  entries[index] = value;
+}
+
+
+void VertexCache::Clear()
+{
+  for(int i = 0; i < numEntries; i++)
+    entries[i] = -1;
+}
+
+void VertexCache::Copy(VertexCache* inVcache)
+{
+  for(int i = 0; i < numEntries; i++)
+  {
+    inVcache->Set(i, entries[i]);
+  }
+}
+
+bool VertexCache::InCache(int entry)
+{
+  bool returnVal = false;
+
+  for(int i = 0; i < numEntries; i++)
+  {
+    if(entries[i] == entry)
+    {
+      returnVal = true;
+      break;
+    }
+  }
+
+  return returnVal;
+}
+
+
+int VertexCache::AddEntry(int entry)
+{
+  int removed;
+
+  removed = entries[numEntries - 1];
+
+  //push everything right one
+  for(int i = numEntries - 2; i >= 0; i--)
+  {
+    entries[i + 1] = entries[i];
+  }
+
+  entries[0] = entry;
+
+  return removed;
+}
+
+