Android library shaders

Android provides the shader option in its framework in the android.graphics package. A few well-known and widely used shaders are also in the Android library. Some of them are as follows:

• BitmapShader: This can be used to draw a bitmap in the texture format. It also supports tiling or mirroring of the bitmap. It is very useful for creating terrain with tiling.

• ComposeShader: This is used to merge two shaders. So, it is very useful for masking or merging colors for two different shaders.

• LinearGradient: This is used to create a gradient along with the given line segment with a defined color set.

• RadialGradient: This is used to create a gradient along with the given circle segment with a defined color set. A radial origin and radius are provided to create the gradient.

• SweepGradient: This is used to create a sweep gradient color around a point with the given radius.

Here is an example:

@Override
protected void onDraw ( Canvas c)
{
  float px = 100.0f;
  float py = 100...