void UniformObject::buildFromVector(const std::vector<glm::vec3> & verticesVector, const std::vector<size_t> & indicesVector, std::vector<glm::vec3> & normalsVector, bool autoNormals, bool smooth){
if(autoNormals) computeNormals(verticesVector, indicesVector, normalsVector);
if(smooth)smoothNormals(verticesVector, indicesVector, normalsVector);
const unsigned int nbVertices = verticesVector.size() * 4;
const unsigned int nbIndices = indicesVector.size();
m_IndicesNumber = nbIndices;
GLfloat vertices[nbVertices];
GLuint indices[nbIndices];
GLfloat normals[nbVertices];
for(size_t i = 0; i < verticesVector.size(); ++i){
vertices[4 * i + 0] = verticesVector[i].x;
vertices[4 * i + 1] = verticesVector[i].y;
vertices[4 * i + 2] = verticesVector[i].z;
vertices[4 * i + 3] = 1.0;
normals[4 * i + 0] = normalsVector[i].x;
normals[4 * i + 1] = normalsVector[i].y;
normals[4 * i + 2] = normalsVector[i].z;
normals[4 * i + 3] = 0.0;
}
for(size_t i = 0; i < indicesVector.size(); ++i){
indices[i] = indicesVector[i];
}
//Binding the VAO
glBindVertexArray(m_VAO);
//Filling Vertices
glEnableVertexAttribArray(m_POSITION_ATTRIB_LOCATION);
glBindBuffer(GL_ARRAY_BUFFER, m_VBOVertices);
glBufferData(GL_ARRAY_BUFFER, nbVertices * sizeof(GLfloat), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(m_POSITION_ATTRIB_LOCATION, 4, GL_FLOAT, GL_FALSE, 0, 0);
//Filling normals
glEnableVertexAttribArray(m_NORMAL_ATTRIB_LOCATION);
glBindBuffer(GL_ARRAY_BUFFER, m_VBONormals);
glBufferData(GL_ARRAY_BUFFER, nbVertices * sizeof(GLfloat), normals, GL_STATIC_DRAW);
glVertexAttribPointer(m_NORMAL_ATTRIB_LOCATION, 4, GL_FLOAT, GL_FALSE, 0, 0);
//Filling indices
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_VBOIndices);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, nbIndices*sizeof(GLuint), indices, GL_STATIC_DRAW);
//Unbinding the VAO
glBindVertexArray(0);
}
Terrain::
Terrain(string heightMapName):
COMPONENTS(3),
width(0),
height(0),
heightMap(heightMapName.c_str()),
_indexCount(0),
vertices(),
coords(),
normals()
{
width = heightMap.get_width();
height = heightMap.get_height();
const unsigned VERTICES_PER_ROW = width;
const unsigned VERTICES_PER_COL = height;
readPNG();
for(int i =0; i < 20; i++)
{
smoothVertices();
}
_vertexCount = (GLsizei)VERTICES_PER_ROW * (GLsizei)VERTICES_PER_COL;
const unsigned VERTEX_COMPONENT_COUNT = 3;
const unsigned VERTEX_ARRAY_SIZE = (unsigned)_vertexCount *
VERTEX_COMPONENT_COUNT;
float* vertices = new float[VERTEX_ARRAY_SIZE];
normals = new float[VERTEX_ARRAY_SIZE];
float* uv = new float [_vertexCount * 2];
const unsigned SQUARES = height * width;
const unsigned TRIANGLES_PER_SQUARE = 2;
const unsigned VERTICES_PER_TRIANGLE = 3;
const unsigned VERTICES_PER_SQUARE = TRIANGLES_PER_SQUARE *
VERTICES_PER_TRIANGLE;
_indexCount = (GLsizei)VERTICES_PER_SQUARE * (GLsizei)SQUARES;
const unsigned INDEX_ARRAY_SIZE = (unsigned)_indexCount;
GLuint* indices = new GLuint[INDEX_ARRAY_SIZE];
GLuint* uvIndices = new GLuint[_indexCount];
cout << "width: " << width << endl;
cout << "height: " << height << endl;
int count = 0;
coords = new float[2760 * 3];
unsigned index = 0;
unsigned index2 = 0;
unsigned uvIndex = 0;
for (unsigned z = 0; z < VERTICES_PER_COL; z++)
{
const float Z = (float)z * Z_DELTA;
for (unsigned x = 0; x < VERTICES_PER_ROW; x++)
{
const float X = (float)x * X_DELTA;
vertices[index++] = X;
//cout << "Height: " << ((float)heightMap.get_pixel(x, z).red / 255.0f) * 250.0f;;
// vertices[index++] = ((float)heightMap.get_pixel(x, z).red / width) * 500.0f;
vertices[index++] = heights[x][z];
vertices[index++] = Z;
if(x < 60 && x > 20 && z > 160 && z < 230 && heights[x][z] > 10.0f)
{
count ++;
cout << "(" << X << "," << heights[x][z] << "," << Z << ")" << endl;
coords[index2++] = X;
coords[index2++] = heights[x][z];
coords[index2++] = Z;
}
uv[uvIndex++] = 1.0f/width * x;
uv[uvIndex++] = 1.0f/height * z;
}
}
cout << "Count: " << count << endl;
// int size = (sizeof(vertices)/sizeof(*float));
// cout << "Size of vertices: " << size << endl;
index = 0;
uvIndex = 0;
for (unsigned z = 0; z < VERTICES_PER_COL - 1; z++)
{
for (unsigned x = 0; x < VERTICES_PER_ROW - 1; x++)
{
unsigned i = z * VERTICES_PER_COL + x;
/* Top left square. */
indices[index++] = i;
indices[index++] = i + VERTICES_PER_ROW;
indices[index++] = i + 1;
/* Bottom right square. */
indices[index++] = i + 1;
indices[index++] = i + VERTICES_PER_ROW;
indices[index++] = i + 1 + VERTICES_PER_ROW;
/* Top left square. */
uvIndices[uvIndex++] = i;
uvIndices[uvIndex++] = i + VERTICES_PER_ROW;
uvIndices[uvIndex++] = i + 1;
/* Bottom right square. */
uvIndices[uvIndex++] = i + 1;
uvIndices[uvIndex++] = i + VERTICES_PER_ROW;
uvIndices[uvIndex++] = i + 1 + VERTICES_PER_ROW;
}
}
smoothNormals(vertices);
bind();
GLuint buffers[6];
glGenBuffers(6, buffers);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
glBufferData(GL_ARRAY_BUFFER, VERTEX_ARRAY_SIZE * (GLsizei)sizeof(float),
vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, INDEX_ARRAY_SIZE * (GLsizei)sizeof(GLuint),
indices, GL_STATIC_DRAW);
GLuint positionLocation = findAttribute("position");
glEnableVertexAttribArray(positionLocation);
glVertexAttribPointer(positionLocation, VERTEX_COMPONENT_COUNT, GL_FLOAT,
GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, buffers[2]);
glBufferData(GL_ARRAY_BUFFER, VERTEX_ARRAY_SIZE * (GLsizei)sizeof(float),
normals, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[3]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, INDEX_ARRAY_SIZE * (GLsizei)sizeof(GLuint),
indices, GL_STATIC_DRAW);
GLuint normalsLocation = findAttribute("normals");
glEnableVertexAttribArray(normalsLocation);
glVertexAttribPointer(normalsLocation, VERTEX_COMPONENT_COUNT, GL_FLOAT,
GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, buffers[4]);
glBufferData(GL_ARRAY_BUFFER, _vertexCount * 2 * (GLsizei)sizeof(float),
uv, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[5]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, INDEX_ARRAY_SIZE * (GLsizei)sizeof(GLuint),
uvIndices, GL_STATIC_DRAW);
GLuint uvLocation = findAttribute("uv");
glEnableVertexAttribArray(uvLocation);
glVertexAttribPointer(uvLocation, 2, GL_FLOAT,
GL_FALSE, 0, 0);
}
