private RawModel generateTerrain(Loader loader)
{
int count = VERTEX_COUNT * VERTEX_COUNT;
float[] vertices = new float[count * 3];
float[] normals = new float[count * 3];
float[] textureCoords = new float[count * 2];
int[] indices = new int[6 * (VERTEX_COUNT - 1) * (VERTEX_COUNT - 1)];
int vertexPointer = 0;
for (int i = 0; i < VERTEX_COUNT; i++)
{
for (int j = 0; j < VERTEX_COUNT; j++)
{
vertices[vertexPointer * 3] = (float)j / ((float)VERTEX_COUNT - 1) * SIZE;
vertices[vertexPointer * 3 + 1] = 0;
vertices[vertexPointer * 3 + 2] = (float)i / ((float)VERTEX_COUNT - 1) * SIZE;
normals[vertexPointer * 3] = 0;
normals[vertexPointer * 3 + 1] = 1;
normals[vertexPointer * 3 + 2] = 0;
textureCoords[vertexPointer * 2] = (float)j / ((float)VERTEX_COUNT - 1);
textureCoords[vertexPointer * 2 + 1] = (float)i / ((float)VERTEX_COUNT - 1);
vertexPointer++;
}
}
int pointer = 0;
for (int gz = 0; gz < VERTEX_COUNT - 1; gz++)
{
for (int gx = 0; gx < VERTEX_COUNT - 1; gx++)
{
int topLeft = (gz * VERTEX_COUNT) + gx;
int topRight = topLeft + 1;
int bottomLeft = ((gz + 1) * VERTEX_COUNT) + gx;
int bottomRight = bottomLeft + 1;
indices[pointer++] = topLeft;
indices[pointer++] = bottomLeft;
indices[pointer++] = topRight;
indices[pointer++] = topRight;
indices[pointer++] = bottomLeft;
indices[pointer++] = bottomRight;
}
}
return loader.loadToVao(vertices, textureCoords, normals, indices);
}