C# 使用SpriteBatch在XNA中绘制矩形
我正在尝试使用spritebatch在XNA中绘制一个矩形。我有以下代码:C# 使用SpriteBatch在XNA中绘制矩形,c#,xna,draw,C#,Xna,Draw,我正在尝试使用spritebatch在XNA中绘制一个矩形。我有以下代码: Texture2D rect = new Texture2D(graphics.GraphicsDevice, 80, 30); Vector2 coor = new Vector2(10, 20); spriteBatch.Draw(rect, coor, Color.Chocolate); 但出于某种原因,它什么也没画。知道怎么了吗?谢谢 您的纹理没有任何数据。您需要
Texture2D rect = new Texture2D(graphics.GraphicsDevice, 80, 30);
Vector2 coor = new Vector2(10, 20);
spriteBatch.Draw(rect, coor, Color.Chocolate);
但出于某种原因,它什么也没画。知道怎么了吗?谢谢 您的纹理没有任何数据。您需要设置像素数据:
Texture2D rect = new Texture2D(graphics.GraphicsDevice, 80, 30);
Color[] data = new Color[80*30];
for(int i=0; i < data.Length; ++i) data[i] = Color.Chocolate;
rect.SetData(data);
Vector2 coor = new Vector2(10, 20);
spriteBatch.Draw(rect, coor, Color.White);
Texture2D rect=新的Texture2D(graphics.GraphicsDevice,80,30);
颜色[]数据=新颜色[80*30];
对于(inti=0;i
以下是可以放入从游戏
派生的类中的代码。这演示了在何处以及如何创建白色、1像素方形纹理(以及完成后如何处理)。以及如何在绘制时缩放和着色该纹理
对于绘制平面彩色矩形,此方法优于以所需大小创建纹理本身
SpriteBatch spriteBatch;
Texture2D whiteRectangle;
protected override void LoadContent()
{
base.LoadContent();
spriteBatch = new SpriteBatch(GraphicsDevice);
// Create a 1px square rectangle texture that will be scaled to the
// desired size and tinted the desired color at draw time
whiteRectangle = new Texture2D(GraphicsDevice, 1, 1);
whiteRectangle.SetData(new[] { Color.White });
}
protected override void UnloadContent()
{
base.UnloadContent();
spriteBatch.Dispose();
// If you are creating your texture (instead of loading it with
// Content.Load) then you must Dispose of it
whiteRectangle.Dispose();
}
protected override void Draw(GameTime gameTime)
{
base.Draw(gameTime);
GraphicsDevice.Clear(Color.White);
spriteBatch.Begin();
// Option One (if you have integer size and coordinates)
spriteBatch.Draw(whiteRectangle, new Rectangle(10, 20, 80, 30),
Color.Chocolate);
// Option Two (if you have floating-point coordinates)
spriteBatch.Draw(whiteRectangle, new Vector2(10f, 20f), null,
Color.Chocolate, 0f, Vector2.Zero, new Vector2(80f, 30f),
SpriteEffects.None, 0f);
spriteBatch.End();
}
我刚刚做了一件非常简单的事情,你可以通过
Draw
方法调用它。您可以轻松创建任意尺寸的矩形:
private static Texture2D rect;
private void DrawRectangle(Rectangle coords, Color color)
{
if(rect == null)
{
rect = new Texture2D(ScreenManager.GraphicsDevice, 1, 1);
rect.SetData(new[] { Color.White });
}
spriteBatch.Draw(rect, coords, color);
}
用法:
DrawRectangle(new Rectangle((int)playerPos.X, (int)playerPos.Y, 5, 5), Color.Fuchsia);
您可以在这里找到另一个解决方案:它涉及到创建SpriteBatch的扩展版本。