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Improve sphere gizmo performance

This commit is contained in:
Kiro 2025-03-10 16:01:43 +01:00
parent cae3d722a3
commit 4915f916a4
1 changed files with 64 additions and 29 deletions
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93
editor/plugins/gizmos/collision_shape_3d_gizmo_plugin.cpp
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@ -357,42 +357,77 @@ void CollisionShape3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
if (Object::cast_to<SphereShape3D>(*s)) {
Ref<SphereShape3D> sp = s;
float r = sp->get_radius();
float radius = sp->get_radius();
#define PUSH_QUARTER(from_x, from_y, to_x, to_y, y) \
points_ptrw[index++] = Vector3(from_x, y, from_y); \
points_ptrw[index++] = Vector3(to_x, y, to_y); \
points_ptrw[index++] = Vector3(from_x, y, -from_y); \
points_ptrw[index++] = Vector3(to_x, y, -to_y); \
points_ptrw[index++] = Vector3(-from_x, y, from_y); \
points_ptrw[index++] = Vector3(-to_x, y, to_y); \
points_ptrw[index++] = Vector3(-from_x, y, -from_y); \
points_ptrw[index++] = Vector3(-to_x, y, -to_y);
#define PUSH_QUARTER_XY(from_x, from_y, to_x, to_y, y) \
points_ptrw[index++] = Vector3(from_x, -from_y - y, 0); \
points_ptrw[index++] = Vector3(to_x, -to_y - y, 0); \
points_ptrw[index++] = Vector3(from_x, from_y + y, 0); \
points_ptrw[index++] = Vector3(to_x, to_y + y, 0); \
points_ptrw[index++] = Vector3(-from_x, -from_y - y, 0); \
points_ptrw[index++] = Vector3(-to_x, -to_y - y, 0); \
points_ptrw[index++] = Vector3(-from_x, from_y + y, 0); \
points_ptrw[index++] = Vector3(-to_x, to_y + y, 0);
#define PUSH_QUARTER_YZ(from_x, from_y, to_x, to_y, y) \
points_ptrw[index++] = Vector3(0, -from_y - y, from_x); \
points_ptrw[index++] = Vector3(0, -to_y - y, to_x); \
points_ptrw[index++] = Vector3(0, from_y + y, from_x); \
points_ptrw[index++] = Vector3(0, to_y + y, to_x); \
points_ptrw[index++] = Vector3(0, -from_y - y, -from_x); \
points_ptrw[index++] = Vector3(0, -to_y - y, -to_x); \
points_ptrw[index++] = Vector3(0, from_y + y, -from_x); \
points_ptrw[index++] = Vector3(0, to_y + y, -to_x);
// Number of points in an octant. So there will be 8 * points_in_octant * 2 points in total for one circle.
// This Corresponds to the smoothness of the circle.
const uint32_t points_in_octant = 16;
const real_t inc = (Math_PI / (4 * points_in_octant));
const real_t radius_squared = radius * radius;
real_t r = 0;
Vector<Vector3> points;
uint32_t index = 0;
// 3 full circles.
points.resize(3 * 8 * points_in_octant * 2);
Vector3 *points_ptrw = points.ptrw();
for (int i = 0; i <= 360; i++) {
float ra = Math::deg_to_rad((float)i);
float rb = Math::deg_to_rad((float)i + 1);
Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
float previous_x = radius;
float previous_y = 0.f;
points.push_back(Vector3(a.x, 0, a.y));
points.push_back(Vector3(b.x, 0, b.y));
points.push_back(Vector3(0, a.x, a.y));
points.push_back(Vector3(0, b.x, b.y));
points.push_back(Vector3(a.x, a.y, 0));
points.push_back(Vector3(b.x, b.y, 0));
}
Vector<Vector3> collision_segments;
for (int i = 0; i < 64; i++) {
float ra = i * (Math_TAU / 64.0);
float rb = (i + 1) * (Math_TAU / 64.0);
Point2 a = Vector2(Math::sin(ra), Math::cos(ra)) * r;
Point2 b = Vector2(Math::sin(rb), Math::cos(rb)) * r;
collision_segments.push_back(Vector3(a.x, 0, a.y));
collision_segments.push_back(Vector3(b.x, 0, b.y));
collision_segments.push_back(Vector3(0, a.x, a.y));
collision_segments.push_back(Vector3(0, b.x, b.y));
collision_segments.push_back(Vector3(a.x, a.y, 0));
collision_segments.push_back(Vector3(b.x, b.y, 0));
for (uint32_t i = 0; i < points_in_octant; ++i) {
r += inc;
real_t x = Math::cos(r) * radius;
real_t y = Math::sqrt(radius_squared - (x * x));
PUSH_QUARTER(previous_x, previous_y, x, y, 0);
PUSH_QUARTER(previous_y, previous_x, y, x, 0);
PUSH_QUARTER_XY(previous_x, previous_y, x, y, 0);
PUSH_QUARTER_XY(previous_y, previous_x, y, x, 0);
PUSH_QUARTER_YZ(previous_x, previous_y, x, y, 0);
PUSH_QUARTER_YZ(previous_y, previous_x, y, x, 0)
previous_x = x;
previous_y = y;
}
#undef PUSH_QUARTER
#undef PUSH_QUARTER_XY
#undef PUSH_QUARTER_YZ
p_gizmo->add_lines(points, material, false, collision_color);
p_gizmo->add_collision_segments(collision_segments);
p_gizmo->add_collision_segments(points);
Vector<Vector3> handles;
handles.push_back(Vector3(r, 0, 0));
p_gizmo->add_handles(handles, handles_material);