Rearrange soucre files into subdirectories

[libs/gl.git] / source / builders / primitivebuilder.h

diff --git a/source/builders/primitivebuilder.h b/source/builders/primitivebuilder.h
new file mode 100644 (file)
index 0000000..0ffd170
--- /dev/null
+++ b/source/builders/primitivebuilder.h
@@ -0,0 +1,45 @@
+#ifndef MSP_GL_PRIMITIVEBUILDER_H_
+#define MSP_GL_PRIMITIVEBUILDER_H_
+
+#include "primitivetype.h"
+#include "vertexarray.h"
+#include "vertexbuilder.h"
+
+namespace Msp {
+namespace GL {
+
+class VertexArray;
+class VertexArrayBuilder;
+
+/**
+Base class for primitive builders.  This is derived from VertexBuilder and adds
+begin() and end() functions for specifying batches of primitives instead of
+just vertices.
+*/
+class PrimitiveBuilder: public VertexBuilder
+{
+protected:
+       VertexArray &array;
+       VertexArrayBuilder vab;
+       PrimitiveType type;
+       bool in_batch;
+       unsigned offs;
+
+       PrimitiveBuilder(VertexArray &);
+public:
+       void begin(PrimitiveType);
+       void end();
+       void offset(unsigned);
+       void element(unsigned);
+       PrimitiveType get_type() const;
+protected:
+       virtual void vertex_(const Vector4 &);
+       virtual void begin_() = 0;
+       virtual void end_() = 0;
+       virtual void element_(unsigned) = 0;
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif