Terragen Conventions - Revision history

Matt: Syncing with GDoc

2019-08-10T06:44:50Z

Syncing with GDoc

← Older revision		Revision as of 06:44, 10 August 2019
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			There are a couple of conventions to be aware of when using Terragen. These conventions may be familiar from other 3D applications, though they can vary from application to application.

	== Vertical Axis ==		== Vertical Axis ==

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	== Displacement as the Primary Method for Shaping Terrain ==		== Displacement as the Primary Method for Shaping Terrain ==

	In Terragen, terrain is created through “displacement” of a surface. ~~All~~ terrain is ~~by default~~ acting on a planet-sized sphere and displacing the surface of that sphere to create landscape features ranging from mountain ranges to pebbles. At render time, the surface is subdivided into micropolygons according to where the camera is placed. The micropolygons are displaced to break up larger shapes and give them fine texture and detail.		In Terragen, terrain is created through “displacement” of a surface. By default, all terrain is acting on a planet-sized sphere and displacing the surface of that sphere to create landscape features ranging from mountain ranges to pebbles. At render time, the surface is subdivided into micropolygons according to where the camera is placed. The micropolygons are displaced to break up larger shapes and give them fine texture and detail.

	This may differ from other 3D programs that handle terrain as geometry or as a standalone heightfield object.		This may differ from other 3D programs that handle terrain as geometry or as a standalone heightfield object.

BFlasher at 18:19, 11 November 2018

2018-11-11T18:19:00Z

← Older revision		Revision as of 18:19, 11 November 2018
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	~~Although Terragen sticks to~~ the ~~conventions~~ of ~~other 3D applications where possible to maintain consistency~~ and ~~familiarity~~, ~~certain defaults~~ and ~~settings are unique~~ to ~~Terragen. The most common confusion stems~~ from ~~the coordinate system~~. ~~In many other applications~~, the ~~Z axis~~ is ~~considered the height axis, whereas in Terragen~~ the ~~Y axis~~ is ~~used for for height~~.		== Vertical Axis ==

			In the XYZ coordinate system, the Y axis is the vertical axis (i.e. height).

			== Default Unit of Measurement ==

			The default unit of measurement is meters. This is used for all size and distance values.

			== Displacement as the Primary Method for Shaping Terrain ==

			In Terragen, terrain is created through “displacement” of a surface. All terrain is by default acting on a planet-sized sphere and displacing the surface of that sphere to create landscape features ranging from mountain ranges to pebbles. At render time, the surface is subdivided into micropolygons according to where the camera is placed. The micropolygons are displaced to break up larger shapes and give them fine texture and detail.

			This may differ from other 3D programs that handle terrain as geometry or as a standalone heightfield object.

BFlasher: Created page with "Although Terragen sticks to the conventions of other 3D applications where possible to maintain consistency and familiarity, certain defaults and settings are unique to Terrag..."

2018-10-08T21:08:39Z

Created page with "Although Terragen sticks to the conventions of other 3D applications where possible to maintain consistency and familiarity, certain defaults and settings are unique to Terrag..."

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Although Terragen sticks to the conventions of other 3D applications where possible to maintain consistency and familiarity, certain defaults and settings are unique to Terragen. The most common confusion stems from the coordinate system. In many other applications, the Z axis is considered the height axis, whereas in Terragen the Y axis is used for for height.