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Hand tracking

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Signed-off-by: Slendi <slendi@socopon.com>
This commit is contained in:
Slendi
2026-01-17 14:40:34 +02:00
parent e9ae017e9b
commit f4fad2c1ac
3 changed files with 249 additions and 21 deletions
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71
src/VulkanRenderer.cpp
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@@ -426,37 +426,66 @@ auto VulkanRenderer::GL::draw_sphere(smath::Vec3 center, float radius,
if (sphere_color.has_value())
color(*sphere_color);
begin(GeometryKind::Triangles);
for (int y = 0; y < rings; y++) {
float const v = static_cast<float>(y + 1) / static_cast<float>(rings);
float const v1 = static_cast<float>(y) / static_cast<float>(rings);
float const v2 = static_cast<float>(y + 1) / static_cast<float>(rings);
float const theta = v * pi;
float const theta1 = v1 * pi;
float const theta2 = v2 * pi;
float const s = std::sin(theta);
float const c = std::cos(theta);
float const s1 = std::sin(theta1);
float const c1 = std::cos(theta1);
float const s2 = std::sin(theta2);
float const c2 = std::cos(theta2);
begin(GeometryKind::TriangleStrip);
for (int x = 0; x <= segments; x++) {
float const u
for (int x = 0; x < segments; x++) {
float const u1
= static_cast<float>(x) / static_cast<float>(segments);
float const phi = u * (2.0f * pi);
float const u2
= static_cast<float>(x + 1) / static_cast<float>(segments);
float const sp = std::sin(phi);
float const cp = std::cos(phi);
float const phi1 = u1 * (2.0f * pi);
float const phi2 = u2 * (2.0f * pi);
// Vertex on ring y+1
{
smath::Vec3 n { s * cp, c, s * sp };
normal(n);
uv(smath::Vec2 { u, 1.0f - v });
float const sp1 = std::sin(phi1);
float const cp1 = std::cos(phi1);
float const sp2 = std::sin(phi2);
float const cp2 = std::cos(phi2);
smath::Vec3 p { center + n * radius };
vert(p);
}
smath::Vec3 n1 { s1 * cp1, c1, s1 * sp1 };
smath::Vec3 n2 { s1 * cp2, c1, s1 * sp2 };
smath::Vec3 n3 { s2 * cp1, c2, s2 * sp1 };
smath::Vec3 n4 { s2 * cp2, c2, s2 * sp2 };
normal(n1);
uv(smath::Vec2 { u1, 1.0f - v1 });
vert(center + n1 * radius);
normal(n2);
uv(smath::Vec2 { u2, 1.0f - v1 });
vert(center + n2 * radius);
normal(n3);
uv(smath::Vec2 { u1, 1.0f - v2 });
vert(center + n3 * radius);
normal(n2);
uv(smath::Vec2 { u2, 1.0f - v1 });
vert(center + n2 * radius);
normal(n4);
uv(smath::Vec2 { u2, 1.0f - v2 });
vert(center + n4 * radius);
normal(n3);
uv(smath::Vec2 { u1, 1.0f - v2 });
vert(center + n3 * radius);
}
end();
}
end();
}
auto VulkanRenderer::GL::draw_mesh(GPUMeshBuffers const &mesh,