Mesh class implementation

src/graphics/mesh.cpp

@@ -0,0 +1,52 @@
+#include <gl_errors.h>
+#include <mesh.h>
+
+Mesh::Mesh(std::vector<Vertex> vertices, std::vector<unsigned int> indices) {
+  this->vertices = vertices;
+  this->indices = indices;
+
+  this->setup_mesh();
+}
+
+void Mesh::setup_mesh() {
+  glGenVertexArrays(1, &VAO);
+  glGenBuffers(1, &VBO);
+  glGenBuffers(1, &EBO);
+  glCheckError();
+
+  glBindVertexArray(VAO);
+  glBindBuffer(GL_ARRAY_BUFFER, VBO);
+  glCheckError();
+
+  glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), &vertices[0],
+               GL_STATIC_DRAW);
+  glCheckError();
+
+  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
+  glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned int),
+               &indices[0], GL_STATIC_DRAW);
+  glCheckError();
+
+  glEnableVertexAttribArray(0);
+  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)0);
+  glCheckError();
+
+  glEnableVertexAttribArray(1);
+  glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),
+                        (void *)offsetof(Vertex, normal));
+  glCheckError();
+
+  glEnableVertexAttribArray(2);
+  glVertexAttribPointer(2, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex),
+                        (void *)offsetof(Vertex, color));
+  glCheckError();
+
+  glBindVertexArray(0);
+}
+
+void Mesh::draw(Shader &shader) {
+  glBindVertexArray(VAO);
+  glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
+  glCheckError();
+  glBindVertexArray(0);
+}