charcoal/OpenGLEngine/MyTriangle.cpp

#include "MyTriangle.h"

#include "Mesh.h"

MyTriangle::MyTriangle()
{
	MeshType* mesh = new MeshType();
	mesh->vertices = new VertexType[3]
	{
		{  0.0,  0.5,  1.0 },
		{  0.5, -0.5,  1.0 },
		{ -0.5, -0.5,  1.0 },
	};
	mesh->vertex_count = 3;
	mesh->indices = new unsigned int[3] { 0, 1, 2, };
	mesh->index_count = 3;
	m_p_mesh = mesh;
}

MyTriangle::~MyTriangle()
{
	if (m_p_mesh != nullptr)
	{
		if (m_p_mesh->vertices != nullptr)
		{
			delete[] m_p_mesh->vertices;
		}
		if (m_p_mesh->indices != nullptr)
		{
			delete[] m_p_mesh->indices;
		}
		delete m_p_mesh;
		m_p_mesh = nullptr;
	}
}

GLuint MyTriangle::gen_vbo() const
{
	GLuint vbo;
	glGenBuffers(1, &vbo);
	glBindBuffer(GL_ARRAY_BUFFER, vbo);
	glBufferData(GL_ARRAY_BUFFER, m_p_mesh->vertex_count * sizeof(VertexType), m_p_mesh->vertices, GL_STATIC_DRAW); // TODO: Optimise Usage
	return vbo;
}