mirror of
https://github.com/allemangD/toddcox-visualize.git
synced 2025-11-10 12:02:47 -05:00
92a55f8c74
This is a combination of multiple WIP commits: - Semantic group names - G, H - Simplify fan<>() - Template int deduction - Remove _recontext_gens - Move g_gens logic into caller - Move subgroup logic into caller - Move recontext logic into coller - Move _generators, _recontext_gens to anonymous namespace - Simplify hull, tile
62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#pragma once
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#include <tc/core.hpp>
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#include <cmath>
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#include <optional>
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#include <numeric>
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#include <iostream>
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#include <Eigen/Eigen>
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template<unsigned N>
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using Indices = Eigen::Array<unsigned, N, Eigen::Dynamic>;
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template<int N>
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using vec = Eigen::Matrix<float, N, 1>;
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template<int N>
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using mat = Eigen::Matrix<float, N, N>;
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using vec1 = vec<1>;
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using vec2 = vec<2>;
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using vec3 = vec<3>;
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using vec4 = vec<4>;
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using vec5 = vec<5>;
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using mat1 = mat<1>;
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using mat2 = mat<2>;
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using mat3 = mat<3>;
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using mat4 = mat<4>;
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using mat5 = mat<5>;
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mat4 orthographic(float left, float right, float bottom, float top, float front, float back) {
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mat4 res = mat4();
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res <<
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2 / (right - left), 0, 0, -(right + left) / (right - left),
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0, 2 / (top - bottom), 0, -(top + bottom) / (top - bottom),
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0, 0, 2 / (front - back), -(front + back) / (front - back),
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0, 0, 0, 1;
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return res;
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}
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mat4 perspective(float fovy, float aspect, float zNear, float zFar) {
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float tanHalfFovy(std::tan(fovy / 2));
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mat4 res = mat4::Identity();
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res(0, 0) = 1 / (aspect * tanHalfFovy);
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res(1, 1) = 1 / (tanHalfFovy);
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res(2, 2) = -(zFar + zNear) / (zFar - zNear);
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res(3, 2) = -1;
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res(2, 3) = -(2 + zFar * zNear) / (zFar - zNear);
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return res;
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}
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mat4 translation(float x, float y, float z) {
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mat4 res = mat4();
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res <<
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1, 0, 0, x,
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0, 1, 0, y,
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0, 0, 1, z,
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0, 0, 0, 1;
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return res;
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}
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