【小家java】Java数值运算 精度丢失原因分析,提供保证精度的MathHelper工具类 * * @param v 需要四舍五入的数字 * @param scale 小数点后保留几位 * @return 四舍五入后的结果 double */...保证精度。返回值类型为保证精度的BigDecimal类型,根据业务需要请转换为自己需要的类型。...Float和Double提供了快速...
isEmptyObject(value)) { ret = MathHelper.add(ret, value); } } return ret; } } @EvalMethod是XScript所识别的一种语法标记,它表示在表达式调用时会自动传入scope环境对象。例如ds.sum('金额')实际会调用到 ReportDataSet.sum(IEvalScope, String)方法。current函数会根据隐式传递的scope...
float nf = 1 - MathHelper.clamp((float) eyePoint.distanceSquared(loc) / maxDistanceSq, 0, 1); scale = scale * (0.3 + 0.7 * nf); public double[] getCandidateDistanceAndAngle(@Nonnull Vector3d loc) { Vector3d eye = Util.getEyePositionEio(Minecraft.getMinecraft().player); ...
Microsoft.Xna.Framework.Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, 1.667f , 1.0f , 10.0f ); } private void Draw(GraphicsDevice graphicsDevice) { graphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Microsoft.Xna.Framework.Color.Transparent, 1.0f , 0 ); graphicsDevice.Set...
{ characterPosition.X += characterSpeed; } // Prevent the character from moving off of the screen characterPosition.X = MathHelper.Clamp(characterPosition.X, safeBounds.Left, safeBounds.Right - characterTexture.Width); // Get the bounding rectangle of the character Rectangl...
Nope, a MathHelper static class stub is right there in the code file. I just named it the same as the XNA class so you can discard it if you do use XNA, but it doesn’t depend on anything. Reply Harry says: August 13, 2013 at 21:45 Hello Renaud. May you show how I should us...
effect.Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45.0f), aspect, 1.0f, 1000.0f); } mesh.Draw(); } } Load model is a nice model loading function that you can use in your projects. You can move the car with W,A,S,D keys on your keyboard.Try to get near ...
MathHelper.ToRadians(0.02f); KeyboardState keystat = Keyboard.GetState(); if (keystat.IsKeyDown(Keys.Up)) { spx += 1; spy += 1; } else if (keystat.IsKeyDown(Keys.Down)) { spx -= 1; spy -= 1; } if (boom) { ani_2++; if (ani_2 == 50) { ani_2 = 49; } else {...
在上面的例子中,MathHelper类定义了两个静态方法add和subtract,可以直接通过类名调用这些方法。 5. class方法的getter和setter class方法还支持定义getter和setter,getter用来获取属性值,setter用来设置属性值。通过在方法前加上get和set关键字来定义getter和setter。下面是一个getter和setter的示例: ```javascript class ...
在上面的示例中,我们首先调用了MathHelper类中的substract方法,并传入两个整数参数10和5。然后将返回的结果存储在result变量中,并通过System.out.println方法将结果打印出来。 注意事项 在使用substract方法时,需要注意以下几点: 1.参数类型必须为整数:substract方法的参数必须是整数类型,否则会导致编译错误。 2.避免除零...