From 342403a02f8063903d0f38327430721d4d0ae331 Mon Sep 17 00:00:00 2001 From: Matt Strapp Date: Mon, 20 Sep 2021 18:15:14 -0500 Subject: do ass1 --- dev/MinGfx/src/point3.cc | 288 +++++++++++++++++++++++------------------------ 1 file changed, 144 insertions(+), 144 deletions(-) (limited to 'dev/MinGfx/src/point3.cc') diff --git a/dev/MinGfx/src/point3.cc b/dev/MinGfx/src/point3.cc index c75a18e..02affa3 100644 --- a/dev/MinGfx/src/point3.cc +++ b/dev/MinGfx/src/point3.cc @@ -1,144 +1,144 @@ -/* - Copyright (c) 2017,2018 Regents of the University of Minnesota. - All Rights Reserved. - See corresponding header file for details. - */ - -#include "point3.h" -#include "vector3.h" - -#include - -namespace mingfx { - -static const Point3 s_zerop3d = Point3(0,0,0); -static const Point3 s_onep3d = Point3(1,1,1); - -const Point3& Point3::Origin() { return s_zerop3d; } -const Point3& Point3::Zero() { return s_zerop3d; } -const Point3& Point3::One() { return s_onep3d; } - - -Point3::Point3() { - p[0] = 0.0; - p[1] = 0.0; - p[2] = 0.0; -} - -Point3::Point3(float x, float y, float z) { - p[0] = x; - p[1] = y; - p[2] = z; -} - -Point3::Point3(float *ptr) { - p[0] = ptr[0]; - p[1] = ptr[1]; - p[2] = ptr[2]; -} - -Point3::Point3(const Point3& other) { - p[0] = other[0]; - p[1] = other[1]; - p[2] = other[2]; -} - -Point3::~Point3() { -} - -bool Point3::operator==(const Point3& other) const { - return (fabs(other[0] - p[0]) < MINGFX_MATH_EPSILON && - fabs(other[1] - p[1]) < MINGFX_MATH_EPSILON && - fabs(other[2] - p[2]) < MINGFX_MATH_EPSILON); -} - -bool Point3::operator!=(const Point3& other) const { - return (fabs(other[0] - p[0]) >= MINGFX_MATH_EPSILON || - fabs(other[1] - p[1]) >= MINGFX_MATH_EPSILON || - fabs(other[2] - p[2]) >= MINGFX_MATH_EPSILON); -} - -Point3& Point3::operator=(const Point3& other) { - p[0] = other[0]; - p[1] = other[1]; - p[2] = other[2]; - return *this; -} - -float Point3::operator[](const int i) const { - if ((i>=0) && (i<=2)) { - return p[i]; - } - else { - // w component of a point is 1 so return the constant 1.0 - return 1.0; - } -} - -float& Point3::operator[](const int i) { - return p[i]; -} - - -const float * Point3::value_ptr() const { - return p; -} - -Point3 Point3::Lerp(const Point3 &b, float alpha) const { - float x = (1.0f-alpha)*(*this)[0] + alpha*b[0]; - float y = (1.0f-alpha)*(*this)[1] + alpha*b[1]; - float z = (1.0f-alpha)*(*this)[2] + alpha*b[2]; - return Point3(x,y,z); -} - -Point3 Point3::Lerp(const Point3 &a, const Point3 &b, float alpha) { - float x = (1.0f-alpha)*a[0] + alpha*b[0]; - float y = (1.0f-alpha)*a[1] + alpha*b[1]; - float z = (1.0f-alpha)*a[2] + alpha*b[2]; - return Point3(x,y,z); -} - - -float Point3::DistanceToPlane(const Point3 &plane_origin, const Vector3 &plane_normal) { - return ((*this) - ClosestPointOnPlane(plane_origin, plane_normal)).Length(); -} - - -Point3 Point3::ClosestPointOnPlane(const Point3 &plane_origin, const Vector3 &plane_normal) { - Vector3 to_plane_origin = plane_origin - (*this); - Vector3 inv_n = -plane_normal; - if (to_plane_origin.Dot(inv_n) < 0.0) { - inv_n = -inv_n; - } - - Vector3 to_plane = inv_n * to_plane_origin.Dot(inv_n); - return (*this) + to_plane; -} - -Point3 Point3::ClosestPoint(const std::vector &point_list) { - int closest_id = 0; - float closest_dist = (point_list[0] - *this).Length(); - for (int i=1; i> ( std::istream &is, Point3 &p) { - // format: (x, y, z) - char dummy; - return is >> dummy >> p[0] >> dummy >> p[1] >> dummy >> p[2] >> dummy; -} - - -} // end namespace +/* + Copyright (c) 2017,2018 Regents of the University of Minnesota. + All Rights Reserved. + See corresponding header file for details. + */ + +#include "point3.h" +#include "vector3.h" + +#include + +namespace mingfx { + +static const Point3 s_zerop3d = Point3(0,0,0); +static const Point3 s_onep3d = Point3(1,1,1); + +const Point3& Point3::Origin() { return s_zerop3d; } +const Point3& Point3::Zero() { return s_zerop3d; } +const Point3& Point3::One() { return s_onep3d; } + + +Point3::Point3() { + p[0] = 0.0; + p[1] = 0.0; + p[2] = 0.0; +} + +Point3::Point3(float x, float y, float z) { + p[0] = x; + p[1] = y; + p[2] = z; +} + +Point3::Point3(float *ptr) { + p[0] = ptr[0]; + p[1] = ptr[1]; + p[2] = ptr[2]; +} + +Point3::Point3(const Point3& other) { + p[0] = other[0]; + p[1] = other[1]; + p[2] = other[2]; +} + +Point3::~Point3() { +} + +bool Point3::operator==(const Point3& other) const { + return (fabs(other[0] - p[0]) < MINGFX_MATH_EPSILON && + fabs(other[1] - p[1]) < MINGFX_MATH_EPSILON && + fabs(other[2] - p[2]) < MINGFX_MATH_EPSILON); +} + +bool Point3::operator!=(const Point3& other) const { + return (fabs(other[0] - p[0]) >= MINGFX_MATH_EPSILON || + fabs(other[1] - p[1]) >= MINGFX_MATH_EPSILON || + fabs(other[2] - p[2]) >= MINGFX_MATH_EPSILON); +} + +Point3& Point3::operator=(const Point3& other) { + p[0] = other[0]; + p[1] = other[1]; + p[2] = other[2]; + return *this; +} + +float Point3::operator[](const int i) const { + if ((i>=0) && (i<=2)) { + return p[i]; + } + else { + // w component of a point is 1 so return the constant 1.0 + return 1.0; + } +} + +float& Point3::operator[](const int i) { + return p[i]; +} + + +const float * Point3::value_ptr() const { + return p; +} + +Point3 Point3::Lerp(const Point3 &b, float alpha) const { + float x = (1.0f-alpha)*(*this)[0] + alpha*b[0]; + float y = (1.0f-alpha)*(*this)[1] + alpha*b[1]; + float z = (1.0f-alpha)*(*this)[2] + alpha*b[2]; + return Point3(x,y,z); +} + +Point3 Point3::Lerp(const Point3 &a, const Point3 &b, float alpha) { + float x = (1.0f-alpha)*a[0] + alpha*b[0]; + float y = (1.0f-alpha)*a[1] + alpha*b[1]; + float z = (1.0f-alpha)*a[2] + alpha*b[2]; + return Point3(x,y,z); +} + + +float Point3::DistanceToPlane(const Point3 &plane_origin, const Vector3 &plane_normal) { + return ((*this) - ClosestPointOnPlane(plane_origin, plane_normal)).Length(); +} + + +Point3 Point3::ClosestPointOnPlane(const Point3 &plane_origin, const Vector3 &plane_normal) { + Vector3 to_plane_origin = plane_origin - (*this); + Vector3 inv_n = -plane_normal; + if (to_plane_origin.Dot(inv_n) < 0.0) { + inv_n = -inv_n; + } + + Vector3 to_plane = inv_n * to_plane_origin.Dot(inv_n); + return (*this) + to_plane; +} + +Point3 Point3::ClosestPoint(const std::vector &point_list) { + int closest_id = 0; + float closest_dist = (point_list[0] - *this).Length(); + for (int i=1; i> ( std::istream &is, Point3 &p) { + // format: (x, y, z) + char dummy; + return is >> dummy >> p[0] >> dummy >> p[1] >> dummy >> p[2] >> dummy; +} + + +} // end namespace -- cgit v1.2.3