Plane::Plane(float quadWidth, float quadHeight, unsigned int width, unsigned int height){
//There's one more row of vertices than quads, same for columns
unsigned int quadCount = width*height;
unsigned int vertexCount = (width+1)*(height+1);
// This is explained further down, but the formula for the amount of indices in the plane is
// (quads per row * 2 + 1) * rows + 1
// The last +1 is for the stitch leading into the plane altogether,
// while the +1 for each row is for the stitch finalizing each strip (as well as starting the next one.)
unsigned int indexCount = (2 * width + 1) * height + 1;
Vertex* vertices = new Vertex[vertexCount];
GLuint* indices = new GLuint[indexCount];
GenerateVertices(vertices, quadWidth, quadHeight, width + 1, height + 1);
GenerateUvCoordinates(vertices, 1.0f / quadWidth, 1.0f / quadHeight, width + 1, height + 1);
GenerateIndices(indices, width, height);
GenerateNormals(vertices, width + 1, height + 1);
GenerateVao(vertices, indices, vertexCount, indexCount);
delete[] vertices;
delete[] indices;
}
HeightMappedPlane::HeightMappedPlane(float quadWidth, float quadHeight, float maxHeight, unsigned int width, unsigned int height, Texture* heightMap){
unsigned int quadCount = width * height;
unsigned int vertexCount = (width + 1) * (height + 1);
// We're not doing trianglestrips this time, so six indicies per quad (2 triangles * 3 points).
unsigned int indexCount = quadCount * 6;
Vertex* vertices = new Vertex[vertexCount];
GLuint* indices = new GLuint[indexCount];
//heightMap->PrintData();
GenerateVertices(vertices, quadWidth, quadHeight, maxHeight, width + 1, height + 1, heightMap);
GenerateIndices(indices, width, height);
GenerateUvCoordinates(vertices, 1.0f / quadWidth, 1.0f / quadHeight, width + 1, height + 1);
Model::GenerateNormals(vertices, indices, vertexCount, indexCount);
Model::GenerateTangents(vertices, indices, vertexCount, indexCount);
Model::GenerateBitangents(vertices, vertexCount);
Model::GenerateVao(vertices, indices, vertexCount, indexCount);
}
