X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fmodel%2FCompositeInstance.hpp;fp=src%2Fmodel%2FCompositeInstance.hpp;h=7d48b76e73fffe7c837c2184b92aff1bed5e471c;hb=2ea26d9ca5eaeae65daa0edbbaeada8c1f23670e;hp=0000000000000000000000000000000000000000;hpb=5304d1e3c1a1e90d474307f4f7eea812a61e483c;p=blank.git

diff --git a/src/model/CompositeInstance.hpp b/src/model/CompositeInstance.hpp
new file mode 100644
index 0000000..7d48b76
--- /dev/null
+++ b/src/model/CompositeInstance.hpp
@@ -0,0 +1,55 @@
+#ifndef BLANK_MODEL_COMPOSITEINSTANCE_HPP_
+#define BLANK_MODEL_COMPOSITEINSTANCE_HPP_
+
+#include <vector>
+#include <glm/glm.hpp>
+#include <glm/gtc/quaternion.hpp>
+
+
+namespace blank {
+
+class CompositeModel;
+class DirectionalLighting;
+
+// TODO: this doesn't have to be a tree, actually
+//       linearizing might be a good opportunity to optimize
+class CompositeInstance {
+
+	friend class CompositeModel;
+
+public:
+	CompositeInstance();
+
+	operator bool() const noexcept { return part_model; }
+
+	const glm::vec3 &Position() const noexcept { return position; }
+	void Position(const glm::vec3 &p) noexcept { position = p; }
+
+	const glm::quat &Orientation() const noexcept { return orientation; }
+	void Orientation(const glm::quat &o) noexcept { orientation = o; }
+
+	glm::mat4 LocalTransform() const noexcept;
+	glm::mat4 GlobalTransform() const noexcept;
+
+	void Render(const glm::mat4 &, DirectionalLighting &) const;
+
+private:
+	CompositeInstance &AddPart();
+	bool HasParent() const noexcept { return parent; }
+	CompositeInstance &Parent() const noexcept { return *parent; }
+	bool IsRoot() const noexcept { return !HasParent(); }
+
+private:
+	const CompositeModel *part_model;
+	CompositeInstance *parent;
+
+	glm::vec3 position;
+	glm::quat orientation;
+
+	std::vector<CompositeInstance> parts;
+
+};
+
+}
+
+#endif