unity 3D云彩资源包3D Cloud Models

unity 3D云彩资源包3D Cloud Models（unity2017.4版本可能无法使用） Features: * 15 low polygon models: Duplicate, move, rotate, and scale the clouds in your scene to create epic skies and artistic direction. * 3 custom shaders: Hard-edged Alpha Blend, Soft-edged Alpha Blend, and Alpha Clip. These shaders use just the RGB channels of the texture and not the alpha channel, keeping memory footprints low. * A special Editor Script to make editing your clouds fast and easy. Dynamically change the ambient and sun color of the clouds. Also modify the contrast, density, thickness, and opacity. Easily orient them towards an object or the scene camera.