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C# Microsoft.Xna.Framework.Vector3.LengthSquared方法代码示例

本文整理汇总了C#中Microsoft.Xna.Framework.Vector3.LengthSquared方法的典型用法代码示例。如果您正苦于以下问题:C# Microsoft.Xna.Framework.Vector3.LengthSquared方法的具体用法?C# Microsoft.Xna.Framework.Vector3.LengthSquared怎么用?C# Microsoft.Xna.Framework.Vector3.LengthSquared使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Microsoft.Xna.Framework.Vector3的用法示例。


在下文中一共展示了Microsoft.Xna.Framework.Vector3.LengthSquared方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: Update


//.........这里部分代码省略.........
                else
                {
                    //calculate steering direction
                    if ((agents[i].Parameters.UpdateFlags & UpdateFlags.AnticipateTurns) != 0)
                        CalcSmoothSteerDirection(agents[i], ref dvel);
                    else
                        CalcStraightSteerDirection(agents[i], ref dvel);

                    //calculate speed scale, which tells the agent to slowdown at the end of the path
                    float slowDownRadius = agents[i].Parameters.Radius * 2;
                    float speedScale = GetDistanceToGoal(agents[i], slowDownRadius) / slowDownRadius;

                    agents[i].DesiredSpeed = agents[i].Parameters.MaxSpeed;
                    dvel = dvel * (agents[i].DesiredSpeed * speedScale);
                }

                //separation
                if ((agents[i].Parameters.UpdateFlags & UpdateFlags.Separation) != 0)
                {
                    float separationDist = agents[i].Parameters.CollisionQueryRange;
                    float invSeparationDist = 1.0f / separationDist;
                    float separationWeight = agents[i].Parameters.SeparationWeight;

                    float w = 0;
                    Vector3 disp = new Vector3(0, 0, 0);

                    for (int j = 0; j < agents[i].NeighborCount; j++)
                    {
                        Agent nei = agents[agents[i].Neighbors[j].Index];

                        Vector3 diff = agents[i].Position - nei.Position;
                        diff.Y = 0;

                        float distSqr = diff.LengthSquared();
                        if (distSqr < 0.00001f)
                            continue;
                        if (distSqr > separationDist * separationDist)
                            continue;
                        float dist = (float)Math.Sqrt(distSqr);
                        float weight = separationWeight * (1.0f - (dist * invSeparationDist) * (dist * invSeparationDist));

                        disp = disp + diff * (weight / dist);
                        w += 1.0f;
                    }

                    if (w > 0.0001f)
                    {
                        //adjust desired veloctiy
                        dvel = dvel + disp * (1.0f / w);

                        //clamp desired velocity to desired speed
                        float speedSqr = dvel.LengthSquared();
                        float desiredSqr = agents[i].DesiredSpeed * agents[i].DesiredSpeed;
                        if (speedSqr > desiredSqr)
                            dvel = dvel * (desiredSqr / speedSqr);
                    }
                }

                //set the desired velocity
                agents[i].DesiredVel = dvel;
            }

            //velocity planning
            for (int i = 0; i < numAgents; i++)
            {
                if (agents[i].State != AgentState.Walking)
开发者ID:Selinux24,项目名称:SharpNav,代码行数:67,代码来源:Crowd.cs


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