Ivy

Plugin/Maxscript to generate ivy’s for 3Ds Max

This plugin is based on the excellent program created by Thomas Luft Ivy Generator.

Most of the addons for max are either a plugin or a maxscript, The reason i decided to use a mixture of both was first simplicity and second I hate when i open an old project that used a plugin that is no longer available, So this plugin/script combo does not leave any trace it just creates simple geometry.

The plugin does all the hard work that is the actual ivy growing and generation of the meshes, The maxscript part is just the user interface, The Materials and the Corona scatter creation.

Requires: 3DMax 2018-2025
Version:  Plugin 0.79
History:

– 2024/11/16 : ver p:0.79 s:0.80

• 3DsMax 2025 Support

– 2024/01/27 : ver p:0.79 s:0.80

• Corona 11 Support
• Chaos Scatter now works with Vray 6 too.

– 2023/10/28 : ver p:0.79 s:0.79

• Corona 10 Support

– 2023/05/13 : ver p:0.79

• Max 2024 Support

– 2022/05/30 : ver p:0.78

• Max 2023 Support
• Corona 8-9 Support

– 2021/05/01 : ver p:0.77

• Max 2022 Support
• Arnold Support for Max 2020 +

– 2020/07/03 : ver p:0.75

• Max 2021 Support
• Multithreading Ivy Growing
• Create Multiple Ivy’s in the same session
• New Leaves Algorithm
• Custom Leaves Mesh Support
• Several Bug fixes and gui tweaks.

– 2020/04/11 : ver p:0.65

• Initial release

Demo: ver p:0.65  – 2020/04/11
 
.75 Update – 2020/07/03

 Roots Generation

Seed Location: Press this button to set the seed location. It will create a point helper were you want the ivy to grow from. Once you click it will try to find the closest objects around and select it as the Climb object, But it might not select the one you want if there are several near by so pay attention to the Climb Object Button it will show the name of the found object.
This helper will be deleted once you exit the interface.

Climb Object: In case the script chose the wrong object or you want to select another you can use this button to set the new Climb Object.

Forces Parameters

Primary Weight: Weight for the primary grow vector

Random Weight: Weight for the random influence vector

Gravity Weight: Weight for the gravity vector

Adhesion Weight: Weight for the adhesion vector. How much it sticks to the surface.

Settings

Ivy Search Size:  How far the algorithm searches for the next intersection of the ivy on the mesh, Smaller numbers result in higher resolution path but also gets much slower. Depending on the climb object you might need to change this value. This influences the grow behavior.

Branching Probability:  The probability of producing a new ivy root per iteration. Smaller numbers produces a more dense ivy.

Branch Parents: Number of parents per branch.

Vector Influence: Influence the Direction of the overall ivy.

Max Floating Length: Maximum length of an ivy branch segment that is freely floating.

Max Adhesion Distance: Maximum distance for adhesion of climb object.

Distance Reduction Factor: If you don’t want the ivy to be so dense you can use this factor so the branches don’t grow so close to each other. 0 Disables this effect.

Max Floating Variation: Varies the length of an ivy branch segment that is freely floating.

Avoid Starting at the same Point: Avoids growing more then one branch from the same position.

Display

Display Drawing: Enables/Disables the display of the ivy while its growing.

Lines: Select to draw Lines, Points or Both.

Display Reduction: Draw every nth segment of the splines to try to speed the display performance.

Grow

Age: The ivy will stop growing when it reaches the specified age.

Grow Ivy Roots: When pressed the ivy will grow until it reaches the specified age or the user clicks this button again. If it hasn’t reach the age and is clicked again it will continue where it was.

Reset Ivy: It will erase the current ivy so you can re build it again.

R: This will restore the default values for all parameters. The settings are remembered from session to session even if you restart max since an .ini file is created at ….\Autodesk\3ds Max 2020\en-US\plugcfg\gt_ivy_settings.ini

Branches

Branch Size: Size of the branch.

Branch Mat ID: Id to use for the branch material.

Add MeshSmooth Modifier: Add a Meshsmooth modifier to the branch geometry.

Draw Mesh: Draws the branches, This is a check button. If its pressed the branches are drawn, If you change something while is pressed they will get redrawn and if you unpressed the button the branches will get deleted.

Draw Spline: Draws a spline of the branches, This is a check button. If its pressed the spline will be drawn, If you unpressed the button the spline will get deleted.

Leaves

Leaf Probability: The probability of creating a new ivy leaf.

Ivy Leaf Size: Size of the leaf mesh.

Leaf Material ID: Range of materials ID to be used.

Leaves Type: The leaves can be regular Meshes or Corona Scatter if  corona is installed and as default render.

Leaf Density: Is a multiplier for the generation of leaves.

Installation:

There is no setup you simply copy the files to the correct locations.
The macro (.mcr) is not needed, But is handy since you can put it on a menu or toolbar.

3Dsmax can have the macros/scripts in different locations depending on how the useUserProfiles is setup in the file InstallSettings.ini.

If you have it set to useUserProfiles=0
then copy the files to:

C:\Program Files\Autodesk\3ds Max 2020\Plugins\gtools_Ivy_2020.gup
C:\Program Files\Autodesk\3ds Max 2020\scripts\Startup\Gtools_Ivy.mcr
C:\Program Files\Autodesk\3ds Max 2020\scripts\Gtools_Ivy.mse
C:\Program Files\Autodesk\3ds Max 2020\maps\*.jpg

—————————————————————————————-

if you have it setup to useUserProfiles=1
then copy the files to:

C:\Program Files\Autodesk\3ds Max 2020\Plugins\gtools_Ivy_2020.gup
C:\Users\<username>\AppData\Local\Autodesk\3dsMax\2020 – 64bit\ENU\usermacros\Gtools_Ivy.mcr
C:\Users\<username>\AppData\Local\Autodesk\3dsMax\2020 – 64bit\ENU\scripts\Gtools_Ivy.mse
C:\Program Files\Autodesk\3ds Max 2020\maps\*.jpg

Troubleshooting:

• Macro not showing up: It seems some people are having issues with the macro not showing up, If that’s the case please watch this small video
  
  and use the macro below.
  macroScript gtoolsIvy category: “–G.Tools–” toolTip: “Ivy” Icon:#(“PhysX_Main”,24)
      (
      filein ((getdir #scripts)  + “\Gtools_Ivy.mse”)
      )
• Getting the default macro folder: If you don’t have the default macro folder or you simply don’t know where is it please try this.
  – Press F11 to open the maxscript listener
  – Paste this in it, getDir #userMacros  and click enter
  It will show you your macro folder, Copy the .mcr file that was in the zip file to that location and restart max

Disclaimer:
The Plugin and Script have been in development for a while now, While it has been successfully used it in many projects with out any issues, unfortunately I can not warranty it will be 100% bug free.
I will do my best to make sure the software is working as it should. Because of the various hardware and software environments into which this software may be put, The software and the accompanying files are provided “As is” and without any warranties as to performance, function or any other warranties whether expressed or implied.

The program should be thoroughly tested with non-critical data before relying on it. The user must assume the entire risk of using the program.

The author shall have neither liability nor responsibility to any person or entity with respect to any liability, loss, or damage directly or indirectly arising from the use of or inability to use the software or the results of the analyses provided by the software.

If you do not agree to the terms of this agreement, Please do not download the software.

Download:

I have spend a lot of time creating this program, The Plugin version .65 is Free but If you find that it has help you or your company, please consider making a donation. That will help to keep updating and fixing the plugin.

If you find a bug or have any suggestions please contact me.

You can download Ivy .65 which supports max 2018-2020 below

or Donate to receive the latest version

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Ivy Plugin

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