X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fmodel%2FShape.hpp;fp=src%2Fmodel%2FShape.hpp;h=5d4036b6d30e925ab77c256f80326b1490b3853b;hb=b7d09e1e35ef90282c97509e0020b20db3c7ea9f;hp=0000000000000000000000000000000000000000;hpb=e53a0e2e711a7d8bd9b0ddacd1360aa14370643f;p=blank.git

diff --git a/src/model/Shape.hpp b/src/model/Shape.hpp
new file mode 100644
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+++ b/src/model/Shape.hpp
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+#ifndef BLANK_MODEL_SHAPE_HPP_
+#define BLANK_MODEL_SHAPE_HPP_
+
+#include "BlockModel.hpp"
+#include "Model.hpp"
+#include "OutlineModel.hpp"
+
+#include <vector>
+#include <glm/glm.hpp>
+
+
+namespace blank {
+
+class Ray;
+
+struct Shape {
+
+	/// the number of vertices (and normals) this shape has
+	size_t VertexCount() const noexcept { return vtx_pos.size(); }
+	/// the number of vertex indices this shape has
+	size_t VertexIndexCount() const noexcept { return vtx_idx.size(); }
+
+	const Model::Normal &VertexNormal(size_t idx) const noexcept { return vtx_nrm[idx]; }
+	Model::Normal VertexNormal(
+		size_t idx, const glm::mat4 &transform
+	) const noexcept {
+		return Model::Normal(transform * glm::vec4(vtx_nrm[idx], 0.0f));
+	}
+
+	/// fill given buffers with this shape's elements with an
+	/// optional transform and offset
+	void Vertices(
+		Model::Positions &vertex,
+		Model::Normals &normal,
+		Model::Indices &index
+	) const;
+	void Vertices(
+		Model::Positions &vertex,
+		Model::Normals &normal,
+		Model::Indices &index,
+		const glm::mat4 &transform,
+		Model::Index idx_offset = 0
+	) const;
+	void Vertices(
+		BlockModel::Positions &vertex,
+		BlockModel::Indices &index,
+		const glm::mat4 &transform,
+		BlockModel::Index idx_offset = 0
+	) const;
+
+	/// the number of vertices this shape's outline has
+	size_t OutlineCount() const { return out_pos.size(); }
+	/// the number of vertex indices this shape's outline has
+	size_t OutlineIndexCount() const { return out_idx.size(); }
+
+	/// fill given buffers with this shape's outline's elements with
+	/// an optional offset
+	void Outline(
+		OutlineModel::Positions &vertex,
+		OutlineModel::Indices &index,
+		const OutlineModel::Position &offset = { 0.0f, 0.0f, 0.0f },
+		OutlineModel::Index idx_offset = 0
+	) const;
+
+	/// Check if given ray would pass though this shape if it were
+	/// transformed with given matrix.
+	/// If true, dist and normal hold the intersection distance and
+	/// normal, otherwise their content is undefined.
+	virtual bool Intersects(
+		const Ray &,
+		const glm::mat4 &,
+		float &dist,
+		glm::vec3 &normal
+	) const noexcept = 0;
+
+protected:
+	void SetShape(const Model::Positions &pos, const Model::Normals &nrm, const Model::Indices &idx) {
+		vtx_pos = pos;
+		vtx_nrm = nrm;
+		vtx_idx = idx;
+	}
+	void SetOutline(const OutlineModel::Positions &pos, const OutlineModel::Indices &idx) {
+		out_pos = pos;
+		out_idx = idx;
+	}
+
+private:
+	Model::Positions vtx_pos;
+	Model::Normals vtx_nrm;
+	Model::Indices vtx_idx;
+
+	OutlineModel::Positions out_pos;
+	OutlineModel::Indices out_idx;
+
+};
+
+}
+
+#endif