From abd6b1d7b281c85fce748e0535f1f769916cd9b3 Mon Sep 17 00:00:00 2001
From: Sebastian Parborg <darkdefende@gmail.com>
Date: Tue, 26 Jan 2021 18:21:12 +0100
Subject: Fix T85049: Geometry Nodes: How to handle instances with shear?

Use transform matrices instead of loc, rot, scale variables to store instance transforms.

Reviewed By: JacquesLucke

Differential Revision: http://developer.blender.org/D10211
---
 source/blender/blenkernel/BKE_geometry_set.hh | 31 ++++++---------------------
 1 file changed, 7 insertions(+), 24 deletions(-)

(limited to 'source/blender/blenkernel/BKE_geometry_set.hh')

diff --git a/source/blender/blenkernel/BKE_geometry_set.hh b/source/blender/blenkernel/BKE_geometry_set.hh
index ad5a5d57045..3b093ae730a 100644
--- a/source/blender/blenkernel/BKE_geometry_set.hh
+++ b/source/blender/blenkernel/BKE_geometry_set.hh
@@ -24,6 +24,7 @@
 #include <iostream>
 
 #include "BLI_float3.hh"
+#include "BLI_float4x4.hh"
 #include "BLI_hash.hh"
 #include "BLI_map.hh"
 #include "BLI_set.hh"
@@ -422,9 +423,7 @@ class PointCloudComponent : public GeometryComponent {
 /** A geometry component that stores instances. */
 class InstancesComponent : public GeometryComponent {
  private:
-  blender::Vector<blender::float3> positions_;
-  blender::Vector<blender::float3> rotations_;
-  blender::Vector<blender::float3> scales_;
+  blender::Vector<blender::float4x4> transforms_;
   blender::Vector<int> ids_;
   blender::Vector<InstancedData> instanced_data_;
 
@@ -434,30 +433,14 @@ class InstancesComponent : public GeometryComponent {
   GeometryComponent *copy() const override;
 
   void clear();
-  void add_instance(Object *object,
-                    blender::float3 position,
-                    blender::float3 rotation = {0, 0, 0},
-                    blender::float3 scale = {1, 1, 1},
-                    const int id = -1);
-  void add_instance(Collection *collection,
-                    blender::float3 position,
-                    blender::float3 rotation = {0, 0, 0},
-                    blender::float3 scale = {1, 1, 1},
-                    const int id = -1);
-  void add_instance(InstancedData data,
-                    blender::float3 position,
-                    blender::float3 rotation,
-                    blender::float3 scale,
-                    const int id = -1);
+  void add_instance(Object *object, blender::float4x4 transform, const int id = -1);
+  void add_instance(Collection *collection, blender::float4x4 transform, const int id = -1);
+  void add_instance(InstancedData data, blender::float4x4 transform, const int id = -1);
 
   blender::Span<InstancedData> instanced_data() const;
-  blender::Span<blender::float3> positions() const;
-  blender::Span<blender::float3> rotations() const;
-  blender::Span<blender::float3> scales() const;
+  blender::Span<blender::float4x4> transforms() const;
   blender::Span<int> ids() const;
-  blender::MutableSpan<blender::float3> positions();
-  blender::MutableSpan<blender::float3> rotations();
-  blender::MutableSpan<blender::float3> scales();
+  blender::MutableSpan<blender::float4x4> transforms();
   int instances_amount() const;
 
   bool is_empty() const final;
-- 
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