Differential D14211 Diff 48776 source/blender/blenkernel/intern/curves.cc

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source/blender/blenkernel/intern/curves.cc

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using blender::float3;		using blender::float3;
using blender::IndexRange;		using blender::IndexRange;
using blender::MutableSpan;		using blender::MutableSpan;
using blender::RandomNumberGenerator;		using blender::RandomNumberGenerator;
using blender::Span;		using blender::Span;

static const char *ATTR_POSITION = "position";		static const char *ATTR_POSITION = "position";

static void curves_random(Curves *curves);
static void update_custom_data_pointers(Curves &curves);		static void update_custom_data_pointers(Curves &curves);

static void curves_init_data(ID *id)		static void curves_init_data(ID *id)
{		{
Curves curves = (Curves )id;		Curves curves = (Curves )id;
BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(curves, id));		BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(curves, id));

MEMCPY_STRUCT_AFTER(curves, DNA_struct_default_get(Curves), id);		MEMCPY_STRUCT_AFTER(curves, DNA_struct_default_get(Curves), id);

new (&curves->geometry) blender::bke::CurvesGeometry();		new (&curves->geometry) blender::bke::CurvesGeometry();

curves_random(curves);
}		}

static void curves_copy_data(Main UNUSED(bmain), ID id_dst, const ID *id_src, const int flag)		static void curves_copy_data(Main UNUSED(bmain), ID id_dst, const ID *id_src, const int flag)
{		{
using namespace blender;		using namespace blender;

Curves curves_dst = (Curves )id_dst;		Curves curves_dst = (Curves )id_dst;
const Curves curves_src = (const Curves )id_src;		const Curves curves_src = (const Curves )id_src;
▲ Show 20 Lines • Show All 155 Lines • ▼ Show 20 Lines	IDTypeInfo IDType_ID_CV = {
/lib_override_apply_post / nullptr,		/lib_override_apply_post / nullptr,
};		};

static void update_custom_data_pointers(Curves &curves)		static void update_custom_data_pointers(Curves &curves)
{		{
blender::bke::CurvesGeometry::wrap(curves.geometry).update_customdata_pointers();		blender::bke::CurvesGeometry::wrap(curves.geometry).update_customdata_pointers();
}		}

static void curves_random(Curves *curves)
{
const int numpoints = 8;

blender::bke::CurvesGeometry &geometry = blender::bke::CurvesGeometry::wrap(curves->geometry);
geometry = blender::bke::CurvesGeometry(500 * numpoints, 500);

MutableSpan<int> offsets = geometry.offsets();
MutableSpan<float3> positions = geometry.positions();

float radius_data = (float )CustomData_add_layer_named(
&geometry.point_data, CD_PROP_FLOAT, CD_DEFAULT, nullptr, geometry.point_size, "radius");
MutableSpan<float> radii{radius_data, geometry.points_size()};

for (const int i : offsets.index_range()) {
offsets[i] = numpoints * i;
}

RandomNumberGenerator rng;

for (int i = 0; i < geometry.curve_size; i++) {
const IndexRange curve_range = geometry.range_for_curve(i);
MutableSpan<float3> curve_positions = positions.slice(curve_range);
MutableSpan<float> curve_radii = radii.slice(curve_range);

const float theta = 2.0f * M_PI * rng.get_float();
const float phi = saacosf(2.0f * rng.get_float() - 1.0f);

float3 no = {std::sin(theta) * std::sin(phi), std::cos(theta) * std::sin(phi), std::cos(phi)};
no = blender::math::normalize(no);

float3 co = no;
for (int key = 0; key < numpoints; key++) {
float t = key / (float)(numpoints - 1);
curve_positions[key] = co;
curve_radii[key] = 0.02f * (1.0f - t);

float3 offset = float3(rng.get_float(), rng.get_float(), rng.get_float()) * 2.0f - 1.0f;
co += (offset + no) / numpoints;
}
}
}

void BKE_curves_add(Main bmain, const char *name)		void BKE_curves_add(Main bmain, const char *name)
{		{
Curves curves = static_cast<Curves >(BKE_id_new(bmain, ID_CV, name));		Curves curves = static_cast<Curves >(BKE_id_new(bmain, ID_CV, name));

return curves;		return curves;
}		}

BoundBox BKE_curves_boundbox_get(Object ob)		BoundBox BKE_curves_boundbox_get(Object ob)
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