transforms.h

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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
 
#ifndef _SCENEPIC_TRANSFORMS_H_
#define _SCENEPIC_TRANSFORMS_H_
 
#include "matrix.h"
 
#include <utility>
 
namespace scenepic
{
  namespace Transforms
  {
    Transform scale(float scale);
 
    Transform scale(const Vector& scale);
 
    Transform translate(const Vector& vec);
 
    Transform rotation_matrix_from_axis_angle(const Vector& axis, float angle);
 
    Quaternion quaternion_from_axis_angle(const Vector& axis, float angle);
 
    std::pair<Vector, float> axis_angle_to_align_x_to_axis(const Vector& axis);
 
    Quaternion quaternion_to_align_x_to_axis(const Vector& axis);
 
    Quaternion quaternion_multiply(const Quaternion& a, const Quaternion& b);
 
    Transform rotation_to_align_x_to_axis(const Vector& axis);
 
    Transform rotation_about_x(float angle);
 
    Transform rotation_about_y(float angle);
 
    Transform rotation_about_z(float angle);
 
    Transform look_at_rotation(
      const Vector& center, const Vector& look_at, const Vector& up_dir);
 
    Transform euler_angles_to_matrix(
      const Vector& euler_angles, const std::string& convention = "XYZ");
 
    Transform quaternion_to_matrix(const Quaternion& quaternion);
 
    Transform gl_projection(
      double fov_y_degrees, double aspect_ratio, double znear, double zfar);
 
    Transform gl_projection(
      const Intrinsic& camera_matrix,
      int width,
      int height,
      double znear,
      double zfar);
 
    Transform gl_world_to_camera(const Extrinsic& extrinsic);
 
  } // namespace Transforms
} // namespace scenepic
 
#endif