Sphere::Sphere()
{
setNormalsTrue();
setIndexTrue();
setUVTrue();
create(1.0f,20);
}
Terrain::Terrain(std::string filename, float resolution, float interval)
{
// set member values
m_interval = interval;
m_resolution = resolution;
// initialize the height field
loadHeightmap(filename);
for (int z = 1; z < m_resolutionY - 1; z++){
for (int x = 1; x < m_resolutionX - 1; x++){
m_normals.push_back(calculateNormal(x, z));
m_vertices.push_back(glm::vec4(x, getHeight(glm::vec2(x, z)), z, 1.0));
//m_uvs.push_back(glm::vec2(x / (float)m_resolutionX, z / (float)m_resolutionY));
m_uvs.push_back(glm::vec2((float)x / 5, (float)z / 5));
}
}
int offset = 0;
for (int z = 0; z < m_resolutionY - 3; z++){
for (int x = 0; x < m_resolutionX - 3; x++){
// 1. Triangle
m_index.push_back(offset + x);
m_index.push_back(offset + x + 1);
m_index.push_back(offset + x + (m_resolutionY - 2));
// 2. Triangle
m_index.push_back(offset + x + (m_resolutionY - 2));
m_index.push_back(offset + x + 1);
m_index.push_back(offset + x + (m_resolutionY - 2) + 1);
}
offset += (m_resolutionY - 2);
}
m_indices = m_index.size();
m_points = m_vertices.size();
setNormalsTrue();
setIndexTrue();
setUVTrue();
}
Cube::Cube()
{
m_points = 36;
m_indices = 36;
setIndexFalse();
setNormalsTrue();
setUVTrue();
GLfloat vertices[] = {
// Front face
-1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0,
// Right face
1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0,
1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, -1.0, 1.0,
// Back face
-1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0,
1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0,
// Left face
-1.0, -1.0, 1.0, -1.0, -1.0, -1.0, -1.0, 1.0, -1.0,
-1.0, 1.0, -1.0, -1.0, 1.0, 1.0, -1.0, -1.0, 1.0,
// Bottom face
-1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, -1.0,
1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, -1.0, 1.0,
// Top Face
-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, -1.0,
1.0, 1.0, -1.0, -1.0, 1.0, -1.0, -1.0, 1.0, 1.0
};
GLfloat normals[] = {
// Front face
0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0,
0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0,
// Right face
1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0,
1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0,
// Back face
0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0,
0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0,
// Left face
-1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0,
-1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0,
// Bottom face
0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0,
0.0, -1.0, 0.0, 0.0, -1.0, 0.0, 0.0, -1.0, 0.0,
// Top face
0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0,
0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0
};
GLfloat texCoords[] = {
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0
};
for (int i = 0; i<m_points; i++)
{
m_vertices.push_back(glm::vec4(vertices[i * 3]*0.5, vertices[i * 3 + 1]*0.5, vertices[i * 3 + 2]*0.5, 1.0f));
m_normals.push_back(glm::vec3(normals[i * 3], normals[i * 3 + 1], normals[i * 3 + 2]));
m_uvs.push_back(glm::vec2(texCoords[i * 2], texCoords[i * 2 + 1]));
}
for (int i = 0; i < m_indices; i++)
{
m_index.push_back(i);
}
}
