Part one - removed references and smart pointers
This commit is contained in:
@ -1,136 +1,137 @@
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// Copyright (c) 2022 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "display/mesh/_Mesh.hpp"
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#include "dawnopengl.hpp"
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/** Indice that references a specific vertice */
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typedef int32_t meshindice_t;
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namespace Dawn {
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enum MeshDrawMode {
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MESH_DRAW_MODE_TRIANGLES = GL_TRIANGLES
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};
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class Mesh {
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private:
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protected:
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/** Pointer to the vertex buffer on the GPU */
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GLuint vertexBuffer = -1;
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/** Pointer to the index buffer on the GPU */
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GLuint indexBuffer = -1;
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/** How many vertices are in the mesh */
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int32_t verticeCount = -1;
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/** How many indices are in the mesh */
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int32_t indiceCount = -1;
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public:
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/**
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* Create a new set of buffers for the mesh to use.
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*
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* @param verticeCount How many Vertices will this buffer support.
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* @param indiceCount How many Indices will this buffer support.
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*/
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void createBuffers(
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int32_t verticeCount,
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int32_t indiceCount
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);
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/**
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* Cleanup the buffers on a given mesh. This is useful if you intend to
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* expand the count of vertices your mesh supports.
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*/
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void disposeBuffers();
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/**
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* Write vertice positions to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param vertices Array of positions to write.
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*/
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template<size_t N>
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void bufferPositions(
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int32_t position,
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std::array<glm::vec3, N> positions
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) {
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glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
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glBufferSubData(
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GL_ARRAY_BUFFER,
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sizeof(glm::vec3) * position,
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sizeof(positions),
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(void *)positions.data()
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);
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}
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/**
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* Write vertice coordinates to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param coordinates Array of coordinates to write.
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*/
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template<size_t N>
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void bufferCoordinates(
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int32_t position,
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std::array<glm::vec2, N> coordinates
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) {
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auto offsetCoordinates = (
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(sizeof(glm::vec3) * this->verticeCount) +
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(sizeof(glm::vec2) * position)
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);
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glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
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glBufferSubData(
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GL_ARRAY_BUFFER,
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offsetCoordinates,
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sizeof(coordinates),
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(void *)coordinates.data()
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);
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}
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/**
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* Write indices to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param indices Array of indices to write.
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*/
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template<size_t N>
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void bufferIndices(
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int32_t position,
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std::array<meshindice_t, N> indices
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) {
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->indexBuffer);
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glBufferSubData(
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GL_ELEMENT_ARRAY_BUFFER,
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sizeof(meshindice_t) * position,
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sizeof(indices),
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(void *)indices.data()
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);
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}
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/**
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* Draw a primitive. Primitives are drawn by their indices.
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*
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* @param drawMode Which drawing mode to use to draw the primitive.
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* @param start Start indice (index) to draw.
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* @param count Count of indices to draw. Use -1 to draw all.
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*/
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void draw(
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enum MeshDrawMode drawMode,
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int32_t start,
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int32_t count
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);
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/**
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* Cleanup a previously initiated mesh.
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*/
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~Mesh();
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};
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// Copyright (c) 2022 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "display/mesh/_Mesh.hpp"
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#include "dawnopengl.hpp"
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#include "assert/assert.hpp"
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/** Indice that references a specific vertice */
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typedef int32_t meshindice_t;
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namespace Dawn {
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enum MeshDrawMode {
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MESH_DRAW_MODE_TRIANGLES = GL_TRIANGLES
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};
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class Mesh {
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private:
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protected:
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/** Pointer to the vertex buffer on the GPU */
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GLuint vertexBuffer = -1;
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/** Pointer to the index buffer on the GPU */
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GLuint indexBuffer = -1;
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/** How many vertices are in the mesh */
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int32_t verticeCount = -1;
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/** How many indices are in the mesh */
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int32_t indiceCount = -1;
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public:
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/**
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* Create a new set of buffers for the mesh to use.
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*
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* @param verticeCount How many Vertices will this buffer support.
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* @param indiceCount How many Indices will this buffer support.
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*/
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void createBuffers(
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int32_t verticeCount,
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int32_t indiceCount
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);
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/**
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* Cleanup the buffers on a given mesh. This is useful if you intend to
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* expand the count of vertices your mesh supports.
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*/
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void disposeBuffers();
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/**
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* Write vertice positions to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param vertices Array of positions to write.
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*/
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template<size_t N>
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void bufferPositions(
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int32_t position,
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std::array<glm::vec3, N> positions
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) {
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glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
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glBufferSubData(
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GL_ARRAY_BUFFER,
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sizeof(glm::vec3) * position,
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sizeof(positions),
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(void *)positions.data()
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);
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}
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/**
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* Write vertice coordinates to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param coordinates Array of coordinates to write.
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*/
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template<size_t N>
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void bufferCoordinates(
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int32_t position,
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std::array<glm::vec2, N> coordinates
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) {
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auto offsetCoordinates = (
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(sizeof(glm::vec3) * this->verticeCount) +
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(sizeof(glm::vec2) * position)
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);
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glBindBuffer(GL_ARRAY_BUFFER, this->vertexBuffer);
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glBufferSubData(
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GL_ARRAY_BUFFER,
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offsetCoordinates,
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sizeof(coordinates),
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(void *)coordinates.data()
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);
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}
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/**
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* Write indices to the mesh.
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*
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* @tparam N Size of the array, in terms of number of elements.
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* @param position Position, within the buffer, to write to.
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* @param indices Array of indices to write.
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*/
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template<size_t N>
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void bufferIndices(
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int32_t position,
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std::array<meshindice_t, N> indices
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) {
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->indexBuffer);
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glBufferSubData(
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GL_ELEMENT_ARRAY_BUFFER,
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sizeof(meshindice_t) * position,
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sizeof(indices),
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(void *)indices.data()
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);
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}
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/**
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* Draw a primitive. Primitives are drawn by their indices.
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*
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* @param drawMode Which drawing mode to use to draw the primitive.
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* @param start Start indice (index) to draw.
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* @param count Count of indices to draw. Use -1 to draw all.
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*/
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void draw(
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enum MeshDrawMode drawMode,
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int32_t start,
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int32_t count
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);
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/**
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* Cleanup a previously initiated mesh.
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*/
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~Mesh();
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};
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}
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