本软件是由Planetside机构出品的TerraGen三维地形景观动画软件V4.1.21版，大小：60 MB，支持Ｗin与Mac系统，语言：英语。

Terragen是一款景观产生器，它提供了山、水、大气、云层、日光等几个元素，让你可以自由创造出非常逼真的自然景观。在每个元素中，你都可以进行细部的修改，以下是这些元素的主要功能：

Landscape：这是构成景观最基本的元件，它从一片平地开始，先以随机的方式产生高山或峡谷，然后你可用画笔雕琢它的外形，调整参数修改高度、坡度，或者在地表上加些草木、青苔，直到你满意为止。

Water：有了山之后，就少不了水，例如你可以在高山上加个水池，或在山谷低洼处灌些水，就可以造出溪谷之类的景观。

Cloudscape：从这里可以随机产生云层，只要进一步修改云层密度、颜色等参数，便可创造出像是晴朗、阴霾等截然不同的效果。

Atmosphere：大气的调整可以让你加些薄雾，创造出景物朦胧的效果。

Lighting：不同的光源方向与强度，可以产生阴影，让景物看起来更具立体感。

除了对元素进行修改外，Terragen也提供了摄影机的功能，可让你从不同的视角观看景物，因此从同一个景物中还可以衍生出不统的景象。

PLANETSIDE SOFTWARE TERRAGEN PROFESSIONAL 4.1.21 WIN/MAC

Terragen™ is a powerful solution for rendering and animating realistic natural environments. Create entire worlds from your imagination, or import real world terrain datasets and use Terragen 4 to create the most realistic visualisations possible. You control the weather, landscape, rivers, lakes and oceans, suns, moons and stars. With Terragen 3-4 you have complete control over the shader networks used for terrains, textures, micropolygon displacements, clouds and object distributions. You can reorganise the planetary shading pipeline to suit your goals. Place grass and trees wherever you want, as well as other objects in native TGO or OBJ format that you have modeled in third party software.

Here are some key features of “Terragen”:

Cutting-edge adaptive subdivision renderer.

Modular, plugin-based architecture.

Render entire planets, sweeping vistas, tiny rock gardens, or anything in between.

Import 3D objects for rendering. Export high resolution objects.

Render millions of boulders or trees using “instancing”.

Add multiple heightfields to your scene. Use procedural terrains that can span an entire planet.

Apply almost “infinite” fractal detail to terrain and other objects.

Overhanging terrain using procedural displacements, image-based displacements, or imported geometry.

Volumetric clouds or fast “2.5D” clouds.

Production quality anti-aliasing and motion blur.

Node graph editor for ultimate control over shaders and textures.

OS X 10.8 or newer

演示视频：