charcoal/OpenGLEngine/MyTriangle.cpp
elipzer a8c4b05d2f It Works! A triangle renders on the screen.
This commit gets creates the ObjectOriented scene and gets it
working.

The current test program swaps a triangle from small to large with
the 1 and 2 keys on the keyboard. (1 for small and 2 for large).

The small triangle is rendered by the simple scene and the large
one is rendered by the object oriented one.
2018-09-05 19:10:38 -04:00

41 lines
760 B
C++

#include "MyTriangle.h"
#include "Mesh.h"
MyTriangle::MyTriangle()
{
MeshType* mesh = new MeshType();
mesh->vertices = new VertexType[3]
{
{ 0.0f, 0.75f, 0.0f },
{ 0.75f, -0.75f, 0.0f },
{ -0.75f, -0.75f, 0.0f },
};
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;
}
}
void MyTriangle::populate_vbo() const
{
glBufferData(GL_ARRAY_BUFFER, m_p_mesh->vertex_count * sizeof(VertexType), m_p_mesh->vertices, GL_STATIC_DRAW);
}