Blender – Blender – Interplanety

How to remove delete object confirmation in Blender 2.8

When deleting objects with pressing the “x” keyboard key, Blender shows the confirmation dialog:

To delete objects immediately without confirmation:

Continue reading “How to remove delete object confirmation in Blender 2.8”

Making a water drop and the right water shader

Making beautiful water splashes and drops and setting up a procedural water shader.

By Vitaly Sokol

Blender 2.79, Cycles.

Snapping elements property in Blender 2.8 Python API

The snapping elements property from Blender 2.7

bpy.context.scene.tool_settings.snap_element

1	bpy.context.scene.tool_settings.snap_element

changed in Blender 2.8 API to

bpy.context.scene.tool_settings.snap_elements
# {'EDGE'}

1 2	bpy.context.scene.tool_settings.snap_elements # {'EDGE'}

Hearts pattern

Hearts pattern in BIS

Blender Cycles, Eevee shader.

Accessing the pivot point type in Blender 2.8 Python API

The “pivot_point” property from Blender 2.7

bpy.context.area.spaces[0].pivot_point
# 'BOUNDING_BOX_CENTER':

1 2	bpy.context.area.spaces[0].pivot_point # 'BOUNDING_BOX_CENTER':

in Blender 2.8 API moved to:

bpy.context.scene.tool_settings.transform_pivot_point
# 'MEDIAN_POINT'

1 2	bpy.context.scene.tool_settings.transform_pivot_point # 'MEDIAN_POINT'

Blender add-on: BIS v. 1.6.3.

BIS (Blender Interplanety Storage) updated to v.1.6.3.

Updated according to Blender API changes 2019.03.06.

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use_drag_immediately property in Blender 2.8 Python API

The “use_drag_immediately” property from Blender 2.7

bpy.context.preferences.edit.use_drag_immediately

1	bpy.context.preferences.edit.use_drag_immediately

in Blender 2.8 API moved to

bpy.context.preferences.inputs.use_drag_immediately
# True

1 2	bpy.context.preferences.inputs.use_drag_immediately # True

On the BlS (Blender Interplanety Storage) site all the open library now is available for viewing without creating account and registration. You can view all shared BIS content through the direct link.

Continue reading “BIS – View library”

Changing the current coordinate system in Blender Python API

In Blender 2.7 the current coordinate system could be changed through the

bpy.context.space_data.transform_orientation

1	bpy.context.space_data.transform_orientation

property. In Blender 2.8 coordinate system access moved to the scene collection of “TransformOrientatiosSlots” objects. To get or set the current coordinate system the “transform_orientation_slots” collection is used.

bpy.context.window.scene.transform_orientation_slots[0].type

# 'GLOBAL'

bpy.context.window.scene.transform_orientation_slots[0].type = 'LOCAL'
bpy.context.window.scene.transform_orientation_slots[0].type

# 'LOCAL'

bpy.context.window.scene.transform_orientation_slots[0].type

# 'GLOBAL'

bpy.context.window.scene.transform_orientation_slots[0].type = 'LOCAL'

bpy.context.window.scene.transform_orientation_slots[0].type

# 'LOCAL'

Advanced Transform add-on for Blender 2.8

The Advanced Transform add-on is ported for Blender 2.8.

No critical changes to the source code, only adopting for Blender 2.8.

Add-on on the GitHub:

https://github.com/Korchy/advanced_transform

file to download and use – advanced_transform_2_8.py

Fast moving modifiers in the stack

The “shift+r” key combination, which repeats a perfect action, works not only with editing a mesh but also with the Blender interface. For example, with this key shot, we can simply move the modifier in the modifier stack up and down, without hunting the runaway arrows.

Blender add-on: BIS v. 1.6.2.

BIS (Blender Interplanety Storage) updated to v.1.6.2.

Some minor changes in the add-on UI.

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Simple rotation around edge

It is difficult to rotate mesh polygons around an edge if this edge is not parallel to the global X, Y, or Z axis — we need to switch to the edge local coordinate system, fix axes, and then rotate polygons about these axes. However, this can be done easier and faster – position the viewport parallel to one of the edges local axis and perform a rotation by simply pressing the “r” key.

To quickly rotate polygons around the edge:

switch to the “by Active Element” mode,
select geometry to rotate
next select the edge, around which you want to rotate the geometry. Selected last it becomes an active element,
press shift + Num1 (Num3 or Num7) to set the viewport parallel to one of the edge axes,
rotate geometry by pressing the “r” button.

Octopus

Octopus skin material in BIS

Blender Cycles, Eevee shader.

Soap

Soap material in BIS

Blender Cycles, Eevee shader.

Cracked leather

Cracked leather material in BIS

Blender Cycles, Eevee shader.

Cheese

Cheese material in BIS

Blender Cycles, Eevee shader.

Top and bottom toolbar position in Blender windows

In Blender 2.8 the toolbars are located on the top of the working windows. But you can easily return them to the habitual bottom position.

Right-click on the panel and select “Flip to Bottom” to move the panel down. To return the panel back to the top, right-click on it and select “Flip to Top”.

This feature is not Blender 2.8 exclusive, the same can be done in Blender 2.7.

How to set object (mesh) to active in Blender 2.8 Python API

To set mesh (object) as active in Blender 2.8 Python API the “context.view_layer” is used instead of “context.scene”.

When trying to make object active with “bpy.context.scene.objects.active” Blender throws an error:

AttributeError: bpy_prop_collection: attribute “active” not found

To make object active in Blender 2.8 use the following code:

obj = bpy.context.window.scene.objects[0]
bpy.context.view_layer.objects.active = obj    # 'obj' is the active object now

1 2	obj = bpy.context.window.scene.objects[0] bpy.context.view_layer.objects.active = obj # 'obj' is the active object now

Selecting objects (meshes) in Blender 2.8 Python API

According to Blender 2.8 Python API changes mesh (object) can be selected with using getters and setters.

When trying to check the selected status of the mesh through the “bpy.context.active_object.select” property, Blender throws an error:

AttributeError: ‘Object’ object has no attribute ‘select’

To check whether an object is selected in Blender 2.8 use a getter:

bpy.context.active_object.select_get()
# True

1 2	bpy.context.active_object.select_get() # True

To select an object in Blender 2.8 use a setter:

bpy.context.active_object.select_set(state=True)

1	bpy.context.active_object.select_set(state=True)

To unselect an object use the same setter:

bpy.context.active_object.select_set(state=False)

1	bpy.context.active_object.select_set(state=False)

How to continue step selection

The combination of Ctrl + Shift + Num+ keys continues the selection with the specified step. Each pressing increases the selection by one step.

Num+ is the “+” button on the numeric keypad.

Blender add-on: BIS v. 1.6.1.

BIS (Blender Interplanety Storage) updated to v.1.6.1.

Fixed some bugs.

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How to check what version of Python interpreter is used in Blender

To find what Python interpreter version is used in current Blender version type the following commands in Python Console window in Blender:

import sys
print(sys.version_info)

# sys.version_info(major=3, minor=7, micro=0, releaselevel='final', serial=0)

import sys

print(sys.version_info)

# sys.version_info(major=3, minor=7, micro=0, releaselevel='final', serial=0)

It means that the version of Python used in Blender is 3.7.0.

To make it more readable type the following command:

print('.'.join(map(str, sys.version_info[:3])))
# 3.7.0

1 2	print('.'.join(map(str, sys.version_info[:3]))) # 3.7.0

or with full info:

print(sys.version)
# 3.7.0 (default, Aug 26 2018, 16:05:01) [MSC v.1900 64 bit (AMD64)]

1 2	print(sys.version) # 3.7.0 (default, Aug 26 2018, 16:05:01) [MSC v.1900 64 bit (AMD64)]

Koi Fish Pattern

Koi fish color pattern in BIS

Blender Cycles, Eevee shader.

Porting add-on from Blender 2.7 to Blender 2.8

In the latest version 2.8 of Blender developers have made many changes in API, so all the scripts and add-ons written for earlier Blender versions (2.7 and below) have stopped working. To run your add-ons in the new Blender 2.8, you need to port them – correct their code to work properly with the new Blender API.

To enable your add-on in Blender 2.80 you have to make the following changes in code:

Continue reading “Porting add-on from Blender 2.7 to Blender 2.8”