internal void LimitThirdPersonCameraToWalls(Game game, Vector3Ref eye, Vector3Ref target, FloatRef curtppcameradistance)
{
float one = 1;
Vector3Ref ray_start_point = target;
Vector3Ref raytarget = eye;
Line3D pick = new Line3D();
float raydirX = (raytarget.X - ray_start_point.X);
float raydirY = (raytarget.Y - ray_start_point.Y);
float raydirZ = (raytarget.Z - ray_start_point.Z);
float raydirLength1 = game.Length(raydirX, raydirY, raydirZ);
raydirX /= raydirLength1;
raydirY /= raydirLength1;
raydirZ /= raydirLength1;
raydirX = raydirX * (game.tppcameradistance + 1);
raydirY = raydirY * (game.tppcameradistance + 1);
raydirZ = raydirZ * (game.tppcameradistance + 1);
pick.Start = Vec3.FromValues(ray_start_point.X, ray_start_point.Y, ray_start_point.Z);
pick.End = new float[3];
pick.End[0] = ray_start_point.X + raydirX;
pick.End[1] = ray_start_point.Y + raydirY;
pick.End[2] = ray_start_point.Z + raydirZ;
//pick terrain
IntRef pick2Count = new IntRef();
BlockPosSide[] pick2 = game.Pick(game.s, pick, pick2Count);
if (pick2Count.value > 0)
{
BlockPosSide pick2nearest = game.Nearest(pick2, pick2Count.value, ray_start_point.X, ray_start_point.Y, ray_start_point.Z);
//pick2.Sort((a, b) => { return (FloatArrayToVector3(a.blockPos) - ray_start_point).Length.CompareTo((FloatArrayToVector3(b.blockPos) - ray_start_point).Length); });
float pickX = pick2nearest.blockPos[0] - target.X;
float pickY = pick2nearest.blockPos[1] - target.Y;
float pickZ = pick2nearest.blockPos[2] - target.Z;
float pickdistance = game.Length(pickX, pickY, pickZ);
curtppcameradistance.value = MathCi.MinFloat(pickdistance - 1, curtppcameradistance.value);
if (curtppcameradistance.value < one * 3 / 10)
{
curtppcameradistance.value = one * 3 / 10;
}
}
float cameraDirectionX = target.X - eye.X;
float cameraDirectionY = target.Y - eye.Y;
float cameraDirectionZ = target.Z - eye.Z;
float raydirLength = game.Length(raydirX, raydirY, raydirZ);
raydirX /= raydirLength;
raydirY /= raydirLength;
raydirZ /= raydirLength;
eye.X = target.X + raydirX * curtppcameradistance.value;
eye.Y = target.Y + raydirY * curtppcameradistance.value;
eye.Z = target.Z + raydirZ * curtppcameradistance.value;
}
public void AddPoint(float x, float y, float z)
{
//if is empty
if (MinEdge == null || MaxEdge == null ||
(MinEdge[0] == 0 && MinEdge[1] == 0 && MinEdge[2] == 0 &&
MaxEdge[0] == 0 && MaxEdge[1] == 0 && MaxEdge[2] == 0))
{
MinEdge = Vec3.FromValues(x, y, z);
MaxEdge = Vec3.FromValues(x, y, z);
}
MinEdge[0] = MathCi.MinFloat(MinEdge[0], x);
MinEdge[1] = MathCi.MinFloat(MinEdge[1], y);
MinEdge[2] = MathCi.MinFloat(MinEdge[2], z);
MaxEdge[0] = MathCi.MaxFloat(MaxEdge[0], x);
MaxEdge[1] = MathCi.MaxFloat(MaxEdge[1], y);
MaxEdge[2] = MathCi.MaxFloat(MaxEdge[2], z);
}