public static void DrawWaterSurfaceGrid(
WaterSurface waterSurface,
Camera camera,
ShadowMap shadow,
int nisse,
int surfaceSize,
int surfaceScale)
{
const int waterW = 64;
const int waterH = 64;
const int worldW = 32;
const int worldH = 32;
var boundingFrustum = camera.BoundingFrustum;
waterSurface.Effect.SetShadowMapping(shadow);
var gridStartX = (int) camera.Position.X/waterW - worldW/2;
var gridStartY = (int) camera.Position.Z/waterH - worldH/2;
Array.Clear(RenderedWaterPlanes, 0, RenderedWaterPlanes.Length);
var drawDetails = camera.Position.Y < -1; // fix the sea water some time
if (drawDetails)
for (var y = 0; y <= worldH; y++)
for (var x = 0; x <= worldW; x++)
{
var pos1 = new Vector3((gridStartX + x) * waterW, 0, (gridStartY + y) * waterH);
var pos2 = pos1 + new Vector3(waterW, 1, waterH);
var bb = new BoundingBox(pos1, pos2);
if (boundingFrustum.Contains(bb) == ContainmentType.Disjoint)
continue;
waterSurface.Draw(
camera,
pos1,
Vector3.Distance(camera.Position, pos1 - new Vector3(-32, 0, -32)),
x % 8,
y % 8,
1 << surfaceScale);
}
var raise = 0.5f + camera.Position.Y/500;
var q = (int)camera.ZFar & ~(waterW - 1);
var pos = new Vector3(gridStartX * waterW - q, raise, gridStartY * waterH - q);
waterSurface.Draw(camera, pos, -1, 0, 0, 1 << surfaceScale);
}