104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
// Copyright (C) 2022 RozK
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef _RK_ENGINE_MATH_H
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#define _RK_ENGINE_MATH_H
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#include "types.hpp"
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#include <glm/glm.hpp>
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#include <glm/ext.hpp>
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typedef glm::vec2 rk_vec2;
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typedef glm::vec3 rk_vec3;
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typedef glm::vec4 rk_vec4;
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typedef glm::mat3 rk_mat3;
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typedef glm::mat4 rk_mat4;
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#define RK_CHECK_MATH_TYPE(_t, _e, _c) static_assert(sizeof(_t) == sizeof(_e) * (_c))
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RK_CHECK_MATH_TYPE(rk_vec2, float, 2);
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RK_CHECK_MATH_TYPE(rk_vec3, float, 3);
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RK_CHECK_MATH_TYPE(rk_vec4, float, 4);
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RK_CHECK_MATH_TYPE(rk_mat3, rk_vec3, 3);
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RK_CHECK_MATH_TYPE(rk_mat4, rk_vec4, 4);
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#define vec3_right (rk_vec3(1.f, 0.f, 0.f))
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#define vec3_forward (rk_vec3(0.f, 1.f, 0.f))
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#define vec3_up (rk_vec3(0.f, 0.f, 1.f))
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#define vec3_origin (rk_vec3(0.f, 0.f, 0.f))
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RK_EXPORT void rk_vec3_rotate(
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rk_vec3 & ret,
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rk_vec3 const & vec3,
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rk_vec3 const & axis,
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rk_float const angle);
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RK_EXPORT void rk_vec3_mul_vec3(
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rk_vec3 & ret,
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rk_vec3 const & a,
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rk_vec3 const & b);
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RK_EXPORT void rk_mat3_rotation(
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rk_mat3 & ret,
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rk_vec3 const & axis,
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rk_float const angle);
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RK_EXPORT void rk_mat3_mul_vec3(
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rk_vec3 & ret,
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rk_mat3 const & a,
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rk_vec3 const & b);
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RK_EXPORT void rk_mat3_mul_mat3(
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rk_mat3 & ret,
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rk_mat3 const & a,
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rk_mat3 const & b);
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RK_EXPORT void rk_mat4_projection(
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rk_mat4 & ret,
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rk_float hfov,
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rk_float ratio,
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rk_float near,
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rk_float far);
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RK_EXPORT void rk_mat4_lookat(
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rk_mat4 & ret,
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rk_vec3 const & position,
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rk_vec3 const & lookat);
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RK_EXPORT void rk_mat4_orbit(
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rk_mat4 & ret,
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rk_vec3 const & origin,
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rk_float const yaw,
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rk_float const pitch,
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rk_float const distance);
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RK_EXPORT void rk_mat4_mul_vec3(
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rk_vec3 & ret,
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rk_mat4 const & a,
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rk_vec3 const & b,
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rk_float const w);
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RK_EXPORT void rk_mat4_mul_vec4(
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rk_vec4 & ret,
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rk_mat4 const & a,
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rk_vec4 const & b);
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RK_EXPORT void rk_mat4_mul_mat4(
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rk_mat4 & ret,
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rk_mat4 const & a,
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rk_mat4 const & b);
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#endif // _RK_ENGINE_MATH_H
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