1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "BLI_math_rotation.h"
#include "BLI_task.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_function_util.hh"
using blender::float3;
static bNodeSocketTemplate fn_node_align_rotation_to_vector_in[] = {
{SOCK_VECTOR, N_("Rotation"), 1.0, 0.0, 0.0, 0.0, -FLT_MAX, FLT_MAX, PROP_EULER},
{SOCK_FLOAT, N_("Factor"), 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, PROP_FACTOR},
{SOCK_VECTOR, N_("Vector"), 0.0, 0.0, 1.0, 0.0, -FLT_MAX, FLT_MAX},
{-1, ""},
};
static bNodeSocketTemplate fn_node_align_rotation_to_vector_out[] = {
{SOCK_VECTOR, N_("Rotation")},
{-1, ""},
};
static void fn_node_align_rotation_to_vector_layout(uiLayout *layout,
bContext *UNUSED(C),
PointerRNA *ptr)
{
uiItemR(layout, ptr, "axis", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
uiLayoutSetPropSep(layout, true);
uiLayoutSetPropDecorate(layout, false);
uiItemR(layout, ptr, "pivot_axis", 0, IFACE_("Pivot"), ICON_NONE);
}
static void fn_node_align_rotation_to_vector_init(bNodeTree *UNUSED(ntree), bNode *node)
{
FunctionNodeAlignRotationToVector *node_storage = (FunctionNodeAlignRotationToVector *)
MEM_callocN(sizeof(FunctionNodeAlignRotationToVector), __func__);
node_storage->axis = GEO_NODE_ALIGN_ROTATION_TO_VECTOR_AXIS_X;
node->storage = node_storage;
}
static float3 align_rotations_auto_pivot(const float3 vector,
const float factor,
const float3 local_main_axis,
const float3 old_rotation_euler)
{
if (is_zero_v3(vector)) {
return float3(0);
}
float old_rotation[3][3];
eul_to_mat3(old_rotation, old_rotation_euler);
float3 old_axis;
mul_v3_m3v3(old_axis, old_rotation, local_main_axis);
const float3 new_axis = vector.normalized();
float3 rotation_axis = float3::cross_high_precision(old_axis, new_axis);
if (is_zero_v3(rotation_axis)) {
/* The vectors are linearly dependent, so we fall back to another axis. */
rotation_axis = float3::cross_high_precision(old_axis, float3(1, 0, 0));
if (is_zero_v3(rotation_axis)) {
/* This is now guaranteed to not be zero. */
rotation_axis = float3::cross_high_precision(old_axis, float3(0, 1, 0));
}
}
const float full_angle = angle_normalized_v3v3(old_axis, new_axis);
const float angle = factor * full_angle;
float rotation[3][3];
axis_angle_to_mat3(rotation, rotation_axis, angle);
float new_rotation_matrix[3][3];
mul_m3_m3m3(new_rotation_matrix, rotation, old_rotation);
float3 new_rotation;
mat3_to_eul(new_rotation, new_rotation_matrix);
return new_rotation;
}
static float3 align_rotations_fixed_pivot(const float3 vector,
const float factor,
const float3 local_main_axis,
const float3 local_pivot_axis,
const float3 old_rotation_euler)
{
if (is_zero_v3(vector)) {
return float3(0);
}
float old_rotation[3][3];
eul_to_mat3(old_rotation, old_rotation_euler);
float3 old_axis;
mul_v3_m3v3(old_axis, old_rotation, local_main_axis);
float3 pivot_axis;
mul_v3_m3v3(pivot_axis, old_rotation, local_pivot_axis);
float full_angle = angle_signed_on_axis_v3v3_v3(vector, old_axis, pivot_axis);
if (full_angle > M_PI) {
/* Make sure the point is rotated as little as possible. */
full_angle -= 2.0f * M_PI;
}
const float angle = factor * full_angle;
float rotation[3][3];
axis_angle_to_mat3(rotation, pivot_axis, angle);
float new_rotation_matrix[3][3];
mul_m3_m3m3(new_rotation_matrix, rotation, old_rotation);
float3 new_rotation;
mat3_to_eul(new_rotation, new_rotation_matrix);
return new_rotation;
}
static const blender::fn::MultiFunction &get_multi_function(bNode &node)
{
const FunctionNodeAlignRotationToVector &storage = *(const FunctionNodeAlignRotationToVector *)
node.storage;
float3 local_main_axis{0, 0, 0};
local_main_axis[storage.axis] = 1;
if (storage.pivot_axis == GEO_NODE_ALIGN_ROTATION_TO_VECTOR_PIVOT_AXIS_AUTO) {
static blender::fn::CustomMF_SI_SI_SI_SO<float3, float, float3, float3> auto_pivot{
"Align Rotation Auto Pivot",
[local_main_axis](float3 rotation, float factor, float3 vector) {
return align_rotations_auto_pivot(vector, factor, local_main_axis, rotation);
}};
return auto_pivot;
}
float3 local_pivot_axis{0, 0, 0};
local_pivot_axis[storage.pivot_axis - 1] = 1;
if (local_main_axis == local_pivot_axis) {
return blender::fn::dummy_multi_function;
}
static blender::fn::CustomMF_SI_SI_SI_SO<float3, float, float3, float3> fixed_pivot{
"Align Rotation Fixed Pivot",
[local_main_axis, local_pivot_axis](float3 rotation, float factor, float3 vector) {
return align_rotations_fixed_pivot(
vector, factor, local_main_axis, local_pivot_axis, rotation);
}};
return fixed_pivot;
}
static void fn_node_align_rotation_to_vector_build_multi_function(
blender::nodes::NodeMultiFunctionBuilder &builder)
{
const blender::fn::MultiFunction &fn = get_multi_function(builder.node());
builder.set_matching_fn(fn);
}
void register_node_type_fn_align_rotation_to_vector()
{
static bNodeType ntype;
fn_node_type_base(&ntype,
FN_NODE_ALIGN_ROTATION_TO_VECTOR,
"Align Rotation to Vector",
NODE_CLASS_OP_VECTOR,
0);
node_type_socket_templates(
&ntype, fn_node_align_rotation_to_vector_in, fn_node_align_rotation_to_vector_out);
node_type_init(&ntype, fn_node_align_rotation_to_vector_init);
node_type_storage(&ntype,
"FunctionNodeAlignRotationToVector",
node_free_standard_storage,
node_copy_standard_storage);
ntype.build_multi_function = fn_node_align_rotation_to_vector_build_multi_function;
ntype.draw_buttons = fn_node_align_rotation_to_vector_layout;
nodeRegisterType(&ntype);
}
|
