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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup bke
*/
#include "testing/testing.h"
#include "BKE_curves.hh"
#include "GEO_constraint_solver.hh"
namespace blender::geometry::tests {
using bke::CurvesGeometry;
using bke::CurvesSurfaceTransforms;
inline CurvesSurfaceTransforms create_curves_surface_transforms()
{
CurvesSurfaceTransforms transforms;
transforms.curves_to_world = float4x4::identity();
transforms.curves_to_surface = float4x4::identity();
transforms.world_to_curves = float4x4::identity();
transforms.world_to_surface = float4x4::identity();
transforms.surface_to_world = float4x4::identity();
transforms.surface_to_curves = float4x4::identity();
transforms.surface_to_curves_normal = float4x4::identity();
return transforms;
}
TEST(curves_constraints, LengthAndRootConstraint)
{
CurvesGeometry curves(9, 3);
curves.fill_curve_types(CURVE_TYPE_POLY);
const MutableSpan<int> point_offsets = curves.offsets_for_write();
point_offsets[0] = 0;
point_offsets[1] = 2;
point_offsets[2] = 6;
point_offsets[3] = 9;
const MutableSpan<float3> positions = curves.positions_for_write();
positions[0] = float3(.0f, 0, 0);
positions[1] = float3(.1f, 0, 0);
positions[2] = float3(.0f, 0, 1);
positions[3] = float3(.1f, 0, 1);
positions[4] = float3(.15f, 0, 1);
positions[5] = float3(.0f, 0, 2);
positions[6] = float3(.1f, 0, 2);
positions[7] = float3(.15f, 0, 2);
positions[8] = float3(.25f, 0, 2);
const CurvesSurfaceTransforms transforms = create_curves_surface_transforms();
ConstraintSolver solver;
ConstraintSolver::Params params;
params.use_collision_constraints = false;
solver.initialize(params, curves, curves.curves_range());
const Array<float3> orig_positions = curves.positions();
positions[1].y += 0.1f;
positions[3].y += 0.1f;
positions[6].y += 0.1f;
solver.step_curves(curves, nullptr, transforms, orig_positions, curves.curves_range());
EXPECT_EQ(solver.result().status, ConstraintSolver::Result::Status::Ok);
EXPECT_LE(solver.result().residual.max_error_squared, params.error_threshold * params.error_threshold);
EXPECT_LE(solver.result().residual.rms_error, params.error_threshold);
const float eps = 0.005f;
EXPECT_V3_NEAR(positions[0], float3(0.0f, 0.0f, 0.0f), eps);
EXPECT_V3_NEAR(positions[1], float3(0.065f, 0.075f, 0.0f), eps);
EXPECT_V3_NEAR(positions[2], float3(0.0f, 0.0f, 1.0f), eps);
EXPECT_V3_NEAR(positions[3], float3(0.0824425220, 0.057f, 1.0f), eps);
EXPECT_V3_NEAR(positions[4], float3(0.118486673, 0.022f, 1.0f), eps);
EXPECT_V3_NEAR(positions[5], float3(0.0f, 0.0f, 2.0f), eps);
EXPECT_V3_NEAR(positions[6], float3(0.1f, 0.1f, 2.0f), eps);
EXPECT_V3_NEAR(positions[7], float3(0.125f, 0.057f, 2.0f), eps);
EXPECT_V3_NEAR(positions[8], float3(0.213f, 0.009f, 2.0f), eps);
}
} // namespace blender::geometry::tests
|
