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+ | ====== Modeling Approach ====== | ||
+ | The SpeedTree modeling approach is a blend of procedural modeling and manual editing. | ||
+ | |||
+ | ===== Procedural Modeling ===== | ||
+ | Models are built by creating a hierarchy of objects that create geometry. | ||
+ | |||
+ | The image below shows a simple generator hierarchy and the corresponding model. | ||
+ | |||
+ | {{ :: | ||
+ | |||
+ | The hierarchy of generators on the left is created in the [[generation_editor|Generation Editor]]. | ||
+ | |||
+ | Now, let's answer some common questions about the procedural aspect of SpeedTree modeling. | ||
+ | |||
+ | ==How does it know how many boughs to make?== | ||
+ | Each generator has a group of [[generation_properties|Generation properties]]. | ||
+ | |||
+ | ==How does it know to only put roots near the bottom?== | ||
+ | Two of the [[generation_properties|Generation properties]] are called " | ||
+ | |||
+ | ==Why aren't all the leaves the exact same size?== | ||
+ | Many modeling properties have a variance value. | ||
+ | |||
+ | ==Can I make branches near the tip of the parent shorter than those near the base?== | ||
+ | Sure. That is accomplished by editing the [[curves_overview|parent curve]] of the length value. | ||
+ | |||
+ | ===== Manual Editing ===== | ||
+ | Editing properties on generators is the best way to make general edits to the model; however, you can switch to [[generators_vs._nodes|node editing mode]] to select and edit individual components. | ||
+ | |||
+ | Now, let's answer some common questions about manually editing a model. | ||
+ | |||
+ | ==When I select a node, all of the property values are 0.0. Why?== | ||
+ | Node edits are offsets to the value it was already given by the generator. | ||
+ | |||
+ | ==Will I lose my edits if I go back and change the generator value?== | ||
+ | No. The edits will remain in place, even if you go back and edit the generator further. | ||
+ | |||
+ | ==Can I just do everything with node edits?== | ||
+ | You can, but the model won't randomize very well and you're losing the power of the procedural tools designed to make modeling faster. | ||
+ | |||
+ | ==Can I place and draw branches by hand?== | ||
+ | Sure. Check out the hand drawing page for instructions on how to do that. | ||