ViewDesignEngine
64ad721ed7
- CMake: INTERFACE 库修复、vde_compile_options 顺序修复 - 命名空间: 所有模块添加 using 声明 - 类型补全: Ray3Dd、Point4D - 头文件: tolerance 泛型化、std::optional include - 警告: 放宽 -Wconversion/-Wsign-conversion - 构建结果: 0 errors, 22/25 tests passed
52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
#pragma once
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#include "vde/core/point.h"
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#include "vde/curves/bspline_curve.h"
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#include <vector>
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#include <array>
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namespace vde::curves {
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using core::Point3D;
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using core::Vector3D;
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class NurbsSurface {
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public:
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NurbsSurface(std::vector<std::vector<Point3D>> control_grid,
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std::vector<double> knots_u, std::vector<double> knots_v,
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std::vector<std::vector<double>> weights,
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int degree_u, int degree_v);
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[[nodiscard]] Point3D evaluate(double u, double v) const;
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[[nodiscard]] Vector3D derivative_u(double u, double v) const;
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[[nodiscard]] Vector3D derivative_v(double u, double v) const;
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[[nodiscard]] Vector3D normal(double u, double v) const;
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[[nodiscard]] int degree_u() const { return degree_u_; }
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[[nodiscard]] int degree_v() const { return degree_v_; }
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[[nodiscard]] std::array<int, 2> num_control_points() const {
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return {static_cast<int>(cp_.size()), static_cast<int>(cp_.empty()?0:cp_[0].size())};
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}
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[[nodiscard]] const std::vector<double>& knots_u() const { return knots_u_; }
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[[nodiscard]] const std::vector<double>& knots_v() const { return knots_v_; }
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[[nodiscard]] const std::vector<std::vector<Point3D>>& control_points() const { return cp_; }
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[[nodiscard]] const std::vector<std::vector<double>>& weights() const { return weights_; }
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/// Create a ruled surface between two NURBS curves
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static NurbsSurface ruled(const NurbsCurve& c1, const NurbsCurve& c2);
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/// Create a surface of revolution
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static NurbsSurface revolve(const NurbsCurve& profile, const Point3D& axis_origin,
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const Vector3D& axis_dir, double angle_rad);
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/// Tessellate to triangle mesh
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[[nodiscard]] std::pair<std::vector<Point3D>, std::vector<std::array<int,3>>>
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tessellate(int res_u, int res_v) const;
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private:
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std::vector<std::vector<Point3D>> cp_;
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std::vector<double> knots_u_, knots_v_;
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std::vector<std::vector<double>> weights_;
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int degree_u_, degree_v_;
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};
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} // namespace vde::curves
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