math.h

/*
 * Copyright 2020 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
#pragma once
 
#include <lagrange/ui/api.h>
 
#include <Eigen/Eigen>
#include <limits>
 
namespace lagrange {
namespace ui {
 
using RowMajorMatrixXf = Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>;
using RowMajorMatrixXi = Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>;
 
LA_UI_API Eigen::Matrix4f normal_matrix(const Eigen::Affine3f& transform);
 
LA_UI_API Eigen::Projective3f perspective(float fovy, float aspect, float zNear, float zFar);
 
LA_UI_API Eigen::Projective3f
ortho(float left, float right, float bottom, float top, float zNear, float zFar);
 
LA_UI_API Eigen::Matrix4f
look_at(const Eigen::Vector3f& eye, const Eigen::Vector3f& center, const Eigen::Vector3f& up);
 
LA_UI_API Eigen::Vector3f unproject_point(
    const Eigen::Vector3f& v,
    const Eigen::Matrix4f& view,
    const Eigen::Matrix4f& perspective,
    const Eigen::Vector4f& viewport);
 
LA_UI_API float pi();
 
LA_UI_API float two_pi();
 
LA_UI_API Eigen::Vector3f vector_projection(const Eigen::Vector3f& vector, const Eigen::Vector3f& onto);
 
LA_UI_API float vector_angle(const Eigen::Vector3f& a, const Eigen::Vector3f& b);
 
 
} // namespace ui
} // namespace lagrange