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Geometry Nodes: Mix Rotations #109084

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Hans Goudey merged 11 commits from mod_moder/blender:slerp into main 2023-06-27 00:51:00 +02:00
Conversation 2 Commits 11 Files Changed 2 +95 -27
Iliya Katushenock commented 2023-06-17 20:08:47 +02:00
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Add support a new Rotation socket/data type to a Mix node.

Rotation socket avalible only in Geometry Nodes right now,
list of supported types for node depend on own node tree type.

Mixing kind is slerp (interpolation) of a quaternion. As initial
phase this is enough. In a future, other modes of interpolation
can be added (Euler for XY+Z, YZ+X, ZX+Y, ...). Clamping for
factor work the same as for all other data types.

Drag and drop should be care about avoiding create link between
Rotation socket and all other socket types, this requere chages
is mix node callback for drag & drop system.

See: #92967

Add support a new Rotation socket/data type to a Mix node. Rotation socket avalible only in Geometry Nodes right now, list of supported types for node depend on own node tree type. Mixing kind is slerp (interpolation) of a quaternion. As initial phase this is enough. In a future, other modes of interpolation can be added (Euler for XY+Z, YZ+X, ZX+Y, ...). Clamping for factor work the same as for all other data types. Drag and drop should be care about avoiding create link between Rotation socket and all other socket types, this requere chages is mix node callback for drag & drop system. See: https://projects.blender.org/blender/blender/issues/92967
rot-mix-exm0001-0250.gif
2.2 MiB
rot-mix-exm0001-0250.gif
Iliya Katushenock added the
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Geometry Nodes
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Iliya Katushenock added 2 commits 2023-06-17 20:08:58 +02:00
Iliya Katushenock added 1 commit 2023-06-18 16:48:36 +02:00
Iliya Katushenock added 1 commit 2023-06-18 23:50:44 +02:00
Hans Goudey changed title from WIP: Geometry Nodes: Mix Rotatios to WIP: Geometry Nodes: Mix Rotations 2023-06-26 16:05:02 +02:00
Hans Goudey commented 2023-06-26 16:06:12 +02:00
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Nice, thanks! As a first step, I think this would be better if it only did quaternion mixing.

Nice, thanks! As a first step, I think this would be better if it only did quaternion mixing.
Iliya Katushenock commented 2023-06-26 16:10:06 +02:00
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Yes, as I see it now, supporting some euler interpolation makes little sense if the quaternion is still clipping the rotation.

Yes, as I see it now, supporting some euler interpolation makes little sense if the quaternion is still clipping the rotation.
Iliya Katushenock added 3 commits 2023-06-26 17:11:19 +02:00
Iliya Katushenock changed title from WIP: Geometry Nodes: Mix Rotations to Geometry Nodes: Mix Rotations 2023-06-26 17:12:18 +02:00
Iliya Katushenock added this to the Nodes & Physics project 2023-06-26 17:12:22 +02:00
Iliya Katushenock added 1 commit 2023-06-26 17:24:25 +02:00
Iliya Katushenock requested review from Hans Goudey 2023-06-26 17:24:27 +02:00
Iliya Katushenock added the
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Animation & Rigging
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Hans Goudey requested changes 2023-06-26 17:30:10 +02:00
source/blender/makesrna/intern/rna_nodetree.cc Outdated
@ -3796,0 +3810,4 @@
{
*r_free = true;
const auto rotation_supported_mix = [ptr](const EnumPropertyItem *item) -> bool {
Hans Goudey commented 2023-06-26 17:29:52 +02:00
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[ptr] -> [&]

`[ptr]` -> `[&]`
mod_moder marked this conversation as resolved
source/blender/makesrna/intern/rna_nodetree.cc
@ -3796,0 +3814,4 @@
const eNodeSocketDatatype data_type = eNodeSocketDatatype(item->value);
if (U.experimental.use_rotation_socket && data_type == SOCK_ROTATION) {
const bNodeTree *tree = reinterpret_cast<const bNodeTree *>(ptr->owner_id);
BLI_assert(tree != nullptr);
Hans Goudey commented 2023-06-26 17:29:26 +02:00
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This assert is unnecessary IMO, the pointer is de-referenced in the next line which shows it's not expected to be null.

This assert is unnecessary IMO, the pointer is de-referenced in the next line which shows it's not expected to be null.
mod_moder marked this conversation as resolved
source/blender/nodes/shader/nodes/node_shader_mix.cc Outdated
@ -427,3 +451,2 @@
{
const NodeShaderMix *data = (NodeShaderMix *)node.storage;
bool uniform_factor = data->factor_mode == NODE_MIX_MODE_UNIFORM;
const NodeShaderMix *data = static_cast<NodeShaderMix *>(node.storage);
Hans Goudey commented 2023-06-26 17:29:28 +02:00
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Please leave this sort of cleanup to a separate commit. Same with moving return nullptr above.

Please leave this sort of cleanup to a separate commit. Same with moving `return nullptr` above.
mod_moder marked this conversation as resolved
Iliya Katushenock added 1 commit 2023-06-26 18:57:45 +02:00
Iliya Katushenock added 1 commit 2023-06-26 18:59:14 +02:00
Iliya Katushenock requested review from Hans Goudey 2023-06-26 18:59:37 +02:00
Hans Goudey approved these changes 2023-06-26 22:16:12 +02:00
source/blender/makesrna/intern/rna_nodetree.cc Outdated
@ -13,6 +13,8 @@
#include "BLI_math.h"
#include "BLI_utildefines.h"
Hans Goudey commented 2023-06-26 22:11:14 +02:00
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Group this with the other BLI includes

Group this with the other BLI includes
mod_moder marked this conversation as resolved
Iliya Katushenock added 1 commit 2023-06-26 22:35:10 +02:00
Hans Goudey merged commit 3957a1ad03 into main 2023-06-27 00:51:00 +02:00
Iliya Katushenock deleted branch slerp 2023-06-27 00:53:23 +02:00
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