Sample file for grass and flowers #82365

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Dalai Felinto · 2020-11-03T16:12:38+01:00

Dalai Felinto commented

2020-11-03 16:12:38 +01:00

This sample file will be used to show scattering beyond the pebble use case.

The idea is to be able to scatter different types of flowers and grass (and pebbles)

This sample file will be used to show scattering beyond the pebble use case. The idea is to be able to scatter different types of flowers and grass (and pebbles)

Simon Thommes was assigned by Dalai Felinto

2020-11-03 16:12:38 +01:00

Dalai Felinto commented

2020-11-03 16:12:38 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Dalai Felinto commented

2020-11-03 16:12:38 +01:00

Added subscriber: @dfelinto

Dalai Felinto commented

2020-11-03 16:13:23 +01:00

Nodes that are planned to be used (besides the one by the pebble file):

Nodes that are planned to be used (besides the one by the pebble file): ![image.png](https://archive.blender.org/developer/F9181981/image.png)

Simon Thommes commented

2020-11-26 12:51:15 +01:00

flower_scattering_example_file.blend

File

The file contains both a scene using the old particle system and other methods as a goal to recreate with the new (yet to be implemented) features and a scene prepared to be adapted using the new features of the geometry nodes branch.
(By design the new scene uses features that are not yet implemented, so it is incomplete by the time of initial setup and to be updated throughout the progress of development.)

The file uses multiple layers of instancingfor the creation of the trees.

And modularly built flower assets to be scattered as instances of collections (formerly not possible).

[flower and grass assets taken from the production repository of 'Sprite Fright', made by Andy Goralczyk]

Needed features as planned by the design for this file:

Texture sampling to an attribute from a texture using the UV coordinates inherited by the pointcloud
instancing on a pointcloud randomly from a collection of objects (objects can be instances)
manual editing of location, rotation and scale of points of a pointcloud
applying/baking a point cloud after scattering using the nodes modifier

![image.png](https://archive.blender.org/developer/F9380229/image.png) [flower_scattering_example_file.blend](https://archive.blender.org/developer/F9380194/flower_scattering_example_file.blend) **File** The file contains both a scene using the old particle system and other methods as a goal to recreate with the new (yet to be implemented) features and a scene prepared to be adapted using the new features of the geometry nodes branch. (By design the new scene uses features that are not yet implemented, so it is incomplete by the time of initial setup and to be updated throughout the progress of development.) The file uses multiple layers of instancingfor the creation of the trees. ![image.png](https://archive.blender.org/developer/F9380334/image.png) And modularly built flower assets to be scattered as instances of collections (formerly not possible). ![image.png](https://archive.blender.org/developer/F9380339/image.png) [flower and grass assets taken from the production repository of 'Sprite Fright', made by Andy Goralczyk] **Needed features as planned by the design for this file:** - Texture sampling to an attribute from a texture using the UV coordinates inherited by the pointcloud - instancing on a pointcloud randomly from a collection of objects (objects can be instances) - manual editing of location, rotation and scale of points of a pointcloud - applying/baking a point cloud after scattering using the nodes modifier

Simon Thommes commented

2020-11-26 16:48:09 +01:00

Adjustment notes after design discussion:

Will adapt this scene slightly to make more use of splitting pointclouds into subsets (point separation based on image texture, more flower types to be scattered without intersection)
The manual pointcloud manipulation will be split of from this usecase (instancing of leaves and branches)

Adjustment notes after design discussion: Will adapt this scene slightly to make more use of splitting pointclouds into subsets (point separation based on image texture, more flower types to be scattered without intersection) The manual pointcloud manipulation will be split of from this usecase (instancing of leaves and branches)

Yann Doersam commented

2020-11-26 18:18:48 +01:00

Added subscriber: @YeyAnotherNiceName

Satish Goda commented

2020-12-09 01:15:47 +01:00

Added subscriber: @satishgoda1

Simon Thommes changed title from ~~Sample file for trees and flowers~~ to Sample file for grass and flowers

2020-12-11 19:29:19 +01:00

Simon Thommes commented

2020-12-11 19:38:59 +01:00

flower_scattering_example_file.blend

The file is still work in progress, as I don't have the nodes to implement the new version yet.
But I updated the file with another flower type to mix between them with point separation as outlined by the use-case design.
As the tree use-case is split off from this, I removed their setup for the use-case. I kept the manually created trees in there as decoration, but if they are just source for confusion, I can remove them completely.
- (Larger scale tree distribution can also well be covered with this example, what is still an issue that we don't address within this use-case is the intersection between different scattering systems)
I outlined the plan for scattering the flower types in the documentation within the file for when the nodes are ready. Faking this kind of setup with the old particle system proved quite challenging, so I left it at a halfway point,as it is by far not as important as the example using geometry nodes.

[flower_scattering_example_file.blend](https://archive.blender.org/developer/F9503139/flower_scattering_example_file.blend) ![image.png](https://archive.blender.org/developer/F9503167/image.png) - The file is still work in progress, as I don't have the nodes to implement the new version yet. - But I updated the file with another flower type to mix between them with point separation as outlined by the use-case design. - As the tree use-case is split off from this, I removed their setup for the use-case. I kept the manually created trees in there as decoration, but if they are just source for confusion, I can remove them completely. - (Larger scale tree distribution can also well be covered with this example, what is still an issue that we don't address within this use-case is the intersection between different scattering systems) - I outlined the plan for scattering the flower types in the documentation within the file for when the nodes are ready. Faking this kind of setup with the old particle system proved quite challenging, so I left it at a halfway point,as it is by far not as important as the example using geometry nodes.

Simon Thommes commented

2021-01-22 14:33:31 +01:00

I updated the file for the sprint demo.

flower_scattering_example_file.blend

I updated the file for the sprint demo. [flower_scattering_example_file.blend](https://archive.blender.org/developer/F9592370/flower_scattering_example_file.blend) ![image.png](https://archive.blender.org/developer/F9592362/image.png)

Dimitri Bastos commented

2021-01-22 17:39:14 +01:00

Added subscriber: @DimitriBastos

Dimitri Bastos commented

2021-01-22 17:39:14 +01:00

In #82365#1098667, @SimonThommes wrote:
I updated the file for the sprint demo.

flower_scattering_example_file.blend

Thanks for the file. Don't know if this is the right place to ask, but I would like to ask you about angles and rotation. Is angle a default attribute or is something you've created for the scattering itself?

> In #82365#1098667, @SimonThommes wrote: > I updated the file for the sprint demo. > > [flower_scattering_example_file.blend](https://archive.blender.org/developer/F9592370/flower_scattering_example_file.blend) > > ![image.png](https://archive.blender.org/developer/F9592362/image.png) Thanks for the file. Don't know if this is the right place to ask, but I would like to ask you about angles and rotation. Is angle a default attribute or is something you've created for the scattering itself?

Simon Thommes commented

2021-01-22 18:00:14 +01:00

@DimitriBastos

angle is specifically created to be used to control the rotate points node. The attribute that is used for the orientation of points in the point instancing node is rotation

@DimitriBastos `angle` is specifically created to be used to control the rotate points node. The attribute that is used for the orientation of points in the point instancing node is `rotation`

Dimitri Bastos commented

2021-01-22 21:26:45 +01:00

In #82365#1098845, @SimonThommes wrote:
@DimitriBastos

angle is specifically created to be used to control the rotate points node. The attribute that is used for the orientation of points in the point instancing node is rotation

Thanks!

> In #82365#1098845, @SimonThommes wrote: > @DimitriBastos > > `angle` is specifically created to be used to control the rotate points node. The attribute that is used for the orientation of points in the point instancing node is `rotation` Thanks!

Dalai Felinto commented

2021-01-29 12:09:07 +01:00

Hi Simon, the file looks great.

Could you just prepare the README file and the file so it is ready for people to "play with it"? This way I can move the file to download and close this task.

If you think the thumbnail should be anything other than the rendering let me know (or better, just add the thumbnail to use here. We need it with aspect ratio: 480x270.

Hi Simon, the file looks great. Could you just prepare the README file and the file so it is ready for people to "play with it"? This way I can move the file to download and close this task. If you think the thumbnail should be anything other than the rendering let me know (or better, just add the thumbnail to use here. We need it with aspect ratio: 480x270.

Simon Thommes commented

2021-01-29 17:13:13 +01:00

I polished the file in terms of demoing and wrote a readme:
flower_scattering_example_file.blend

Here is a screenshot of the file open

And here a rendering

I polished the file in terms of demoing and wrote a readme: [flower_scattering_example_file.blend](https://archive.blender.org/developer/F9604102/flower_scattering_example_file.blend) Here is a screenshot of the file open ![image.png](https://archive.blender.org/developer/F9604092/image.png) And here a rendering ![image.png](https://archive.blender.org/developer/F9604095/image.png)

Dalai Felinto commented

2021-01-29 17:27:00 +01:00

Thank you! Added to the main page with a link to the direct download link (to be enabled for 2.93):
https://developer.blender.org/project/manage/121/

Thank you! Added to the main page with a link to the direct download link (to be enabled for 2.93): https://developer.blender.org/project/manage/121/

Dalai Felinto commented

2021-02-01 14:16:02 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Dalai Felinto closed this issue

2021-02-01 14:16:02 +01:00

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Sample file for grass and flowers #82365