minor optimizations in chunk

[blank.git] / src / shape.hpp

diff --git a/src/shape.hpp b/src/shape.hpp
index af19bb12e8ccfbf75fd6205f1e5fecf08e30b6fe..4120f76b938ab0ef5a01431aa6ce08633fabd7f7 100644 (file)
--- a/src/shape.hpp
+++ b/src/shape.hpp
@@ -13,33 +13,51 @@ namespace blank {
 struct Shape {
 
        /// the number of vertices (and normals) this shape has
-       size_t VertexCount() const { return vtx; }
+       size_t VertexCount() const noexcept { return vtx_pos.size(); }
        /// the number of vertex indices this shape has
-       size_t VertexIndexCount() const { return vtx_idx; }
+       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 offset
-       virtual void Vertices(
-               std::vector<glm::vec3> &vertex,
-               std::vector<glm::vec3> &normal,
-               std::vector<Model::Index> &index,
-               const glm::vec3 &elem_offset = { 0.0f, 0.0f, 0.0f },
+       /// 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 = 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 outl; }
+       size_t OutlineCount() const { return out_pos.size(); }
        /// the number of vertex indices this shape's outline has
-       size_t OutlineIndexCount() const { return outl_idx; }
+       size_t OutlineIndexCount() const { return out_idx.size(); }
 
        /// fill given buffers with this shape's outline's elements with
        /// an optional offset
-       virtual void Outline(
-               std::vector<glm::vec3> &vertex,
-               std::vector<OutlineModel::Index> &index,
-               const glm::vec3 &offset = { 0.0f, 0.0f, 0.0f },
+       void Outline(
+               OutlineModel::Positions &vertex,
+               OutlineModel::Indices &index,
+               const OutlineModel::Position &offset = { 0.0f, 0.0f, 0.0f },
                OutlineModel::Index idx_offset = 0
-       ) const = 0;
+       ) const;
 
        /// Check if given ray would pass though this shape if it were
        /// transformed with given matrix.
@@ -50,17 +68,26 @@ struct Shape {
                const glm::mat4 &,
                float &dist,
                glm::vec3 &normal
-       ) const = 0;
+       ) const noexcept = 0;
 
 protected:
-       Shape(size_t vtx, size_t vtx_idx, size_t outl, size_t outl_idx)
-       : vtx(vtx), vtx_idx(vtx_idx), outl(outl), outl_idx(outl_idx) { }
+       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:
-       size_t vtx;
-       size_t vtx_idx;
-       size_t outl;
-       size_t outl_idx;
+       Model::Positions vtx_pos;
+       Model::Normals vtx_nrm;
+       Model::Indices vtx_idx;
+
+       OutlineModel::Positions out_pos;
+       OutlineModel::Indices out_idx;
 
 };
 
@@ -71,22 +98,7 @@ class NullShape
 public:
        NullShape();
 
-       void Vertices(
-               std::vector<glm::vec3> &vertex,
-               std::vector<glm::vec3> &normal,
-               std::vector<Model::Index> &index,
-               const glm::vec3 &elem_offset = { 0.0f, 0.0f, 0.0f },
-               Model::Index idx_offset = 0
-       ) const override;
-
-       void Outline(
-               std::vector<glm::vec3> &vertex,
-               std::vector<OutlineModel::Index> &index,
-               const glm::vec3 &offset = { 0.0f, 0.0f, 0.0f },
-               OutlineModel::Index idx_offset = 0
-       ) const override;
-
-       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const override;
+       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const noexcept override;
 
 };
 
@@ -97,22 +109,7 @@ class CuboidShape
 public:
        CuboidShape(const AABB &bounds);
 
-       void Vertices(
-               std::vector<glm::vec3> &vertex,
-               std::vector<glm::vec3> &normal,
-               std::vector<Model::Index> &index,
-               const glm::vec3 &elem_offset = { 0.0f, 0.0f, 0.0f },
-               Model::Index idx_offset = 0
-       ) const override;
-
-       void Outline(
-               std::vector<glm::vec3> &vertex,
-               std::vector<OutlineModel::Index> &index,
-               const glm::vec3 &offset = { 0.0f, 0.0f, 0.0f },
-               OutlineModel::Index idx_offset = 0
-       ) const override;
-
-       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const override;
+       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const noexcept override;
 
 private:
        AABB bb;
@@ -126,22 +123,7 @@ class StairShape
 public:
        StairShape(const AABB &bounds, const glm::vec2 &clip);
 
-       void Vertices(
-               std::vector<glm::vec3> &vertex,
-               std::vector<glm::vec3> &normal,
-               std::vector<Model::Index> &index,
-               const glm::vec3 &elem_offset = { 0.0f, 0.0f, 0.0f },
-               Model::Index idx_offset = 0
-       ) const override;
-
-       void Outline(
-               std::vector<glm::vec3> &vertex,
-               std::vector<OutlineModel::Index> &index,
-               const glm::vec3 &offset = { 0.0f, 0.0f, 0.0f },
-               OutlineModel::Index idx_offset = 0
-       ) const override;
-
-       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const override;
+       bool Intersects(const Ray &, const glm::mat4 &, float &, glm::vec3 &) const noexcept override;
 
 private:
        AABB top, bot;