本文整理汇总了C#中System.Random.NextDouble方法的典型用法代码示例。如果您正苦于以下问题：C# System.Random.NextDouble方法的具体用法？C# System.Random.NextDouble怎么用？C# System.Random.NextDouble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类System.Random的用法示例。
在下文中一共展示了System.Random.NextDouble方法的15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: Equals_GetHashCode_Contract
public void Equals_GetHashCode_Contract()
{
var rnd = new System.Random();
var offset = rnd.NextDouble() * 60;
if (rnd.NextDouble() < 0.5)
{
offset *= -1;
}
var left = new MultiPoint(GetPoints(offset));
var right = new MultiPoint(GetPoints(offset));
Assert.AreEqual(left, right);
Assert.AreEqual(right, left);
Assert.IsTrue(left.Equals(right));
Assert.IsTrue(left.Equals(left));
Assert.IsTrue(right.Equals(left));
Assert.IsTrue(right.Equals(right));
Assert.IsTrue(left == right);
Assert.IsTrue(right == left);
Assert.AreEqual(left.GetHashCode(), right.GetHashCode());
}示例2: Equals_GetHashCode_Contract
public void Equals_GetHashCode_Contract()
{
var rnd = new System.Random();
var offset = rnd.NextDouble() * 60;
if (rnd.NextDouble() < 0.5)
{
offset *= -1;
}
var leftLine = new List<LineString>();
leftLine.Add(GetLineString(offset + 1));
leftLine.Add(GetLineString(offset + 2));
var left = new MultiLineString(leftLine);
var rightLine = new List<LineString>();
rightLine.Add(GetLineString(offset + 1));
rightLine.Add(GetLineString(offset + 2));
var right = new MultiLineString(rightLine);
Assert.AreEqual(left, right);
Assert.AreEqual(right, left);
Assert.IsTrue(left.Equals(right));
Assert.IsTrue(left.Equals(left));
Assert.IsTrue(right.Equals(left));
Assert.IsTrue(right.Equals(right));
Assert.IsTrue(left == right);
Assert.IsTrue(right == left);
Assert.AreEqual(left.GetHashCode(), right.GetHashCode());
}示例3: Przetwarzaj
public override void Przetwarzaj(IMapa mapa)
{
_rand = new Random(_parametryPerlina.Ziarno);
var przesuniecieX = (float)_rand.NextDouble() * 4096f;
var przesuniecieZ = (float)_rand.NextDouble() * 4096f;
float wspolczynnik = 1f;
for (int warstwa = 2; warstwa <= _parametryPerlina.IloscWarstw; ++warstwa)
{
wspolczynnik += Mathf.Pow(_parametryPerlina.ZachowanieSkali, warstwa);
}
float znormalizowanaSkalaPoczatkowa = _parametryPerlina.Skala/wspolczynnik;
foreach (IPunkt punkt in mapa.Punkty)
{
float wysokosc = 0;
for (int warstwa = 0; warstwa < _parametryPerlina.IloscWarstw; ++warstwa)
{
float gestosc = _parametryPerlina.Gestosc * Mathf.Pow(_parametryPerlina.SkokGestosci, warstwa); // rosnie
float skala = znormalizowanaSkalaPoczatkowa * Mathf.Pow(_parametryPerlina.ZachowanieSkali, warstwa); // maleje
wysokosc += Mathf.PerlinNoise((punkt.Pozycja.x + przesuniecieX) * gestosc,
(punkt.Pozycja.z + przesuniecieZ) * gestosc)
*skala;
}
punkt.Wysokosc = wysokosc;
}
}示例4: BuildSurfaceMesh
public static void BuildSurfaceMesh(ref MeshPlane mesh, ref Random rand)
{
var brush = Resources.Load("PlanetBuilding/SurfaceBrush");
if (brush == null)
{
Debug.LogError("Unable to load basic brush prefab");
return;
}
var rampTex = Resources.Load("Textures/PlanetRamp") as Texture;
if (rampTex == null)
{
Debug.LogError("Unable to load planet colour ramp");
return;
}
// Apply brush texture somehow
// * 0.1f
float brushBaseSize = 1.0f;
float brushSizeLarge = brushBaseSize * 0.2f;
float brushSizeSmall = brushBaseSize * 0.02f;
for (int i = 0; i < rand.Next(25, 75); ++i)
{
var go = (GameObject.Instantiate(brush) as GameObject);
var ch = go.transform.GetChild(0);
var brushScale = (float)(brushSizeSmall + (rand.NextDouble() * brushSizeLarge));
ch.localScale = new Vector3(brushScale, brushScale, brushScale);
go.transform.SetParent(mesh.transform);
go.transform.Rotate(
(float)rand.NextDouble() * 360.0f,
(float)rand.NextDouble() * 360.0f,
(float)rand.NextDouble() * 360.0f
);
}
var localCam = mesh.gameObject.AddComponent<Camera>();
localCam.cullingMask = PlanetBrushLayer;
localCam.fieldOfView = 90;
localCam.backgroundColor = Color.black;
Cubemap c = new Cubemap(2048, TextureFormat.ARGB32, false);
localCam.RenderToCubemap(c);
mesh.GetComponent<Renderer>().material.SetTexture("_Tex", c);
mesh.GetComponent<Renderer>().material.SetTexture("_PlanetRamp", rampTex);
Component.Destroy(localCam);
foreach ( Transform ch in mesh.transform ){
GameObject.Destroy(ch.gameObject);
}
}示例5: Generate
public Model Generate()
{
int count = 1000;
Vector3[] v = new Vector3[count];
Vector3[] r = new Vector3[count];
Random random = new Random();
Color[] color = new Color[count];
float[] m = new float[count];
v[0] = new Vector3(0,
0,
0);
r[0] = new Vector3(0,
0,
0);
m[0] = 1000000000;
color[0] = Color.white;
for (int i = 1; i < count; i++)
{
v[i] = new Vector3((float)random.NextDouble() * (random.NextDouble() > 0.5 ? 1 : -1),
(float)random.NextDouble() * (random.NextDouble() > 0.5 ? 1 : -1),
(float)random.NextDouble() * (random.NextDouble() > 0.5 ? 1 : -1));
r[i] = new Vector3((float)random.NextDouble() * 100,
(float)random.NextDouble() * 100,
(float)random.NextDouble() * 100);
m[i] = random.Next(10000, 100000);
color[i] = Color.yellow;
}
Model model = new Model(r, v, m, color);
model.G = 0.00001f;
model.dt = 0.005f;
return model;
}示例6: CalculateMeanAndVarianceTest
public void CalculateMeanAndVarianceTest() {
System.Random random = new System.Random(31415);
int n = testData.GetLength(0);
int cols = testData.GetLength(1);
{
for (int col = 0; col < cols; col++) {
double scale = random.NextDouble();
IEnumerable<double> x = from rows in Enumerable.Range(0, n)
select testData[rows, col] * scale;
double[] xs = x.ToArray();
double mean_alglib, variance_alglib;
mean_alglib = variance_alglib = 0.0;
double tmp = 0;
alglib.samplemoments(xs, n, out mean_alglib, out variance_alglib, out tmp, out tmp);
var calculator = new OnlineMeanAndVarianceCalculator();
for (int i = 0; i < n; i++) {
calculator.Add(xs[i]);
}
double mean = calculator.Mean;
double variance = calculator.Variance;
Assert.IsTrue(mean_alglib.IsAlmost(mean));
Assert.IsTrue(variance_alglib.IsAlmost(variance));
}
}
}示例7: SpawnBalls
void SpawnBalls()
{
//clean trailrenderers
StartCoroutine(greenBall.TrailRenderDestroy());
StartCoroutine(yellowBall.TrailRenderDestroy());
//randomize balls & set directions
System.Random rand = new System.Random();
bool randomBool = rand.NextDouble() >= 0.5;
if(previousBool==randomBool){ //prevent randomizing the same value too many times
consecutiveBools++;
} else {
consecutiveBools = 0;
}
if(randomBool && consecutiveBools < 3){
greenBall.transform.position = topSpawn.transform.position;
greenBall.isGoingUp = false;
yellowBall.transform.position = bottomSpawn.transform.position;
yellowBall.isGoingUp = true;
} else {
greenBall.transform.position = bottomSpawn.transform.position;
greenBall.isGoingUp = true;
yellowBall.transform.position = topSpawn.transform.position;
yellowBall.isGoingUp = false;
}
previousBool = randomBool;
}示例8: PlanetNoisePerlin
public PlanetNoisePerlin( int seed )
{
System.Random rnd = new System.Random( seed );
grad = new Vector3[ 12 ];
grad[ 0 ] = new Vector3( 1, 1, 0 );
grad[ 1 ] = new Vector3( -1, 1, 0 );
grad[ 2 ] = new Vector3( 1, -1, 0 );
grad[ 3 ] = new Vector3( -1, -1, 0 );
grad[ 4 ] = new Vector3( 1, 0, 1 );
grad[ 5 ] = new Vector3( -1, 0, 1 );
grad[ 6 ] = new Vector3( 1, 0, -1 );
grad[ 7 ] = new Vector3( -1, 0, -1 );
grad[ 8 ] = new Vector3( 0, 1, 1 );
grad[ 9 ] = new Vector3( 0, -1, 1 );
grad[ 10 ] = new Vector3( 0, 1, -1 );
grad[ 11 ] = new Vector3( 0, -1, -1 );
perm = new uint[ permStride ];
for( int i = 0; i < permStride / 2; ++i )
perm[ i ] = ( uint ) Mathf.FloorToInt( ( float ) rnd.NextDouble() * ( permStride / 2 ) );
for( int i = permStride / 2; i < permStride; ++i )
perm[ i ] = perm[ i & ( permStride / 2 - 1 ) ];
}示例9: getCellNoise
public static float[,] getCellNoise(int height, int width,int seed,int featurePointCount)
{
noisePrng = new System.Random(seed);
float[,] noise = new float[height,width];
Vector2[] featurePoints = new Vector2[featurePointCount];
for(int i =0; i < featurePointCount;i++)
{
featurePoints[i] = new Vector2((float)noisePrng.NextDouble(),(float)noisePrng.NextDouble());
}
for(int y =0; y < height; y++)
{
for(int x =0; x < height; x++)
{
noise[x,y] = setCell(featurePoints,x,y,height,width);
}
}
return noise;
}示例10: RandomNumGen
public RandomNumGen(int seed)
{
Rand = new System.Random(seed);
rand_num_ = new List<double>(Environment.mazeSize_ * Environment.mazeSize_ * Evaluator.LIFE_TIME);
for (int i=0; i<rand_num_.Capacity; i++)
{
rand_num_.Add(Rand.NextDouble());
}
index_ = 0;
}示例11: CreateColorFromStringHash
/// <summary>
/// Selects a random, non-red color based on the hashcode of a string
/// </summary>
/// <param name="stringValue">A string to be used as a seed for the random color</param>
/// <returns>A random color based on the input string</returns>
public static Color CreateColorFromStringHash(string stringValue)
{
var color = Color.Yellow;
if (!string.IsNullOrEmpty(stringValue))
{
// Build random vector representing rgb color based on username
var randSeed = stringValue.GetHashCode();
var rand = new System.Random(randSeed);
var colorVector = new Vector3D((float)rand.NextDouble(), (float)rand.NextDouble(), (float)rand.NextDouble());
// Keep the color (vector) from being too close to red (x) so it doesn't conflict with the selection color
if (colorVector.Y > colorVector.Z)
{
if (colorVector.X > colorVector.Y)
colorVector = new Vector3D(colorVector.Z, colorVector.Y, colorVector.Z);
}
else if (colorVector.Z > colorVector.Y)
{
if (colorVector.X > colorVector.Z)
colorVector = new Vector3D(colorVector.Y, colorVector.Y, colorVector.Z);
}
// Make sure color isn't too dark
if (colorVector.Magnitude < 1f)
colorVector *= (1f / colorVector.Magnitude);
// Make sure color components stay within bounds
if (colorVector.X > 1)
colorVector = new Vector3D(1f, colorVector.Y, colorVector.Z);
if (colorVector.Y > 1)
colorVector = new Vector3D(colorVector.X, 1f, colorVector.Z);
if (colorVector.Z > 1)
colorVector = new Vector3D(colorVector.X, colorVector.Y, 1f);
color = Color.FromArgb(255, (int)(colorVector.X * 255), (int)(colorVector.Y * 255), (int)(colorVector.Z * 255));
}
return color;
}示例12: GenerateNoise
private static float[,] GenerateNoise(int Seed, int Width, int Height)
{
float[,] Noise = new float[Width, Height];
System.Random RandomGenerator = new System.Random(Seed);
for (int x = 0; x < Width; ++x)
{
for (int y = 0; y < Height; ++y)
{
Noise[x, y] = ((float)(RandomGenerator.NextDouble()) - 0.5f) * 2.0f;
}
}
return Noise;
}示例13: MenuGenerate
IEnumerator MenuGenerate()
{
yield return new WaitForSeconds(2f);
System.Random rng = new System.Random();
if (RandomGeneration)
{
GridSeed = Random.Range(1, int.MaxValue);
MaxObstacleHeight = Random.Range(1.5f, 4);
ObstacleColorA = new Color((float)rng.NextDouble(), (float)rng.NextDouble(), (float)rng.NextDouble());
}
foreach (Transform obstacle in Obstacles)
{
DestroyImmediate(obstacle.gameObject);
yield return new WaitForSeconds(0.02f);
}
Obstacles.Clear();
yield return new WaitForSeconds(2f);
shuffledNodeCoords = new Queue<Coord>(Functions.ShuffleArray(allNodeCoords.ToArray(), GridSeed));
bool[,] obstacleMap = new bool[GridSizeX, GridSizeY];
int currentObstacleCount = 0;
for (int i = 0; i < Nodes.Count * ObstaclePercent; i++)
{
Coord randomCoord = GetRandomCoord();
Vector3 coordPos = CoordToVector(randomCoord.X, randomCoord.Y);
obstacleMap[randomCoord.X, randomCoord.Y] = true;
currentObstacleCount++;
if (coordPos != GridCenter && GridIsFullyAccessible(obstacleMap, currentObstacleCount))
{
Transform obstacle = (Transform)Instantiate(Obstacle, coordPos, Quaternion.identity);
obstacle.parent = transform;
float obstacleHeight = Mathf.Lerp(MinObstacleHeight,MaxObstacleHeight , (float)rng.NextDouble());
obstacle.localScale = new Vector3(obstacle.localScale.x, obstacleHeight, obstacle.localScale.z);
obstacle.position += new Vector3(0, obstacle.localScale.y / 2, 0);
Renderer obstacleRenderer = obstacle.GetComponent<Renderer>();
Material obstacleMaterial = new Material(obstacleRenderer.sharedMaterial);
float colorPercent = randomCoord.Y / (float)GridSizeY;
obstacleMaterial.color = Color.Lerp(ObstacleColorA, ObstacleColorB, colorPercent);
obstacleRenderer.sharedMaterial = obstacleMaterial;
Obstacles.Add(obstacle);
}
else
{
obstacleMap[randomCoord.X, randomCoord.Y] = false;
currentObstacleCount--;
}
yield return new WaitForSeconds(0.02f);
}
}示例14: Start
IEnumerator Start()
{
pauseUser = false;
pauseWait = true;
enabled = false;
Debug.Log("World begin start");
// if no pools wait for them.
if (!PoolBase.Instance)
{
Debug.Log("Waiting for PoolBase instance.");
while (!PoolBase.Instance)
{
yield return null;
}
}
// wait for UI.
yield return StartCoroutine(UIBase.WaitInstance());
UserEnergy = TotalUserEnergy;
Random = new System.Random(Startup.Seed);
sizeX = (int)transform.localScale.x;
sizeXhalf = sizeX / 2;
sizeZ = (int)transform.localScale.z;
sizeZhalf = sizeZ / 2;
if ((float)sizeX != transform.localScale.x || (float)sizeZ != transform.localScale.z)
{
Debug.LogWarning("World local scale should be a interger.");
}
// get pools
PoolBase pools = PoolBase.Instance;
cubers = pools.Cubers;
fourths = pools.Fourths;
energys = pools.Energys;
// spawn cubers
int infected = 0;
if (Startup.PrecentInfected > 0)
{
infected = (int)((float)Startup.Cubers * ((float)Startup.PrecentInfected / 100f));
if (infected <= 0)
infected = 1;
}
for (int i = 0; i < Startup.Cubers; ++i)
{
Vector3 position;
if (FindGround(new Ray(transform.position + new Vector3(-sizeXhalf + Random.Next(sizeX), 100f, -sizeZhalf + Random.Next(sizeZ)), Vector3.down), out position))
{
cubers.Pull().Init(position, --infected >= 0, 0.5f + (float)Random.NextDouble() * 0.6f);//, Color.black);
}
}
// startup energy
for (int i = 0; i < EnergyCount; ++i)
{
NewEnergy(EnergyMin, EnergyMax);
}
enabled = true;
pauseWait = false;
Debug.Log("World end start");
}示例15: SetComponents
private void SetComponents()
{
this.Camera = new Camera(this, Vector3.UnitZ * 400, -Vector3.UnitZ);
this.World = new InfinityWorld(this);
this.World.WorldObjects.Add(new Characters.ZombieCharacter(this, new Vector3(-95, 0, 0), Color.Yellow));
var rnd = new System.Random();
for (int i = 0; i < 16; i++)
{
var z = new Characters.ZombieCharacter(this, new Vector3(rnd.Next(0, 300) * (float)rnd.NextDouble() * (rnd.Next() % 2 == 0 ? -1 : 1), rnd.Next(0, 300) * (float)rnd.NextDouble() * (rnd.Next() % 2 == 0 ? -1 : 1), 0), Color.Red);
z.OrientationScalar = rnd.Next(-3, 3) + (float)rnd.NextDouble();
this.World.WorldObjects.Add(z);
}
this.World.WorldObjects.Add(new Characters.HumanCharacter(this, new Vector3(0, 5, 0)));
//this.World.Humans.Add(new Characters.HumanCharacter(this, new Vector3(-66, 45, 0)));
}