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Renamed CameraMatrix to Projection.

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Relintai 2023-05-31 16:44:59 +02:00
parent 7327b95957
commit 56f4e1ec46
2 changed files with 44 additions and 44 deletions
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16
include/core/CameraMatrix.hpp → include/core/Projection.hpp
View File

@ -1,5 +1,5 @@
/*************************************************************************/ /*************************************************************************/
/* CameraMatrix.hpp */ /* Projection.hpp */
/*************************************************************************/ /*************************************************************************/
/* This file is part of: */ /* This file is part of: */
/* GODOT ENGINE */ /* GODOT ENGINE */
@ -43,7 +43,7 @@ namespace {
using namespace godot; using namespace godot;
} // namespace } // namespace
struct CameraMatrix { struct Projection {
enum Planes { enum Planes {
PLANE_NEAR, PLANE_NEAR,
PLANE_FAR, PLANE_FAR,
@ -93,9 +93,9 @@ struct CameraMatrix {
Vector2 get_viewport_half_extents() const; Vector2 get_viewport_half_extents() const;
void invert(); void invert();
CameraMatrix inverse() const; Projection inverse() const;
CameraMatrix operator*(const CameraMatrix &p_matrix) const; Projection operator*(const Projection &p_matrix) const;
Plane xform4(const Plane &p_vec4) const; Plane xform4(const Plane &p_vec4) const;
inline Vector3 xform(const Vector3 &p_vec3) const; inline Vector3 xform(const Vector3 &p_vec3) const;
@ -107,12 +107,12 @@ struct CameraMatrix {
int get_pixels_per_meter(int p_for_pixel_width) const; int get_pixels_per_meter(int p_for_pixel_width) const;
operator Transform() const; operator Transform() const;
CameraMatrix(); Projection();
CameraMatrix(const Transform &p_transform); Projection(const Transform &p_transform);
~CameraMatrix(); ~Projection();
}; };
Vector3 CameraMatrix::xform(const Vector3 &p_vec3) const { Vector3 Projection::xform(const Vector3 &p_vec3) const {
Vector3 ret; Vector3 ret;
ret.x = matrix[0][0] * p_vec3.x + matrix[1][0] * p_vec3.y + matrix[2][0] * p_vec3.z + matrix[3][0]; ret.x = matrix[0][0] * p_vec3.x + matrix[1][0] * p_vec3.y + matrix[2][0] * p_vec3.z + matrix[3][0];
ret.y = matrix[0][1] * p_vec3.x + matrix[1][1] * p_vec3.y + matrix[2][1] * p_vec3.z + matrix[3][1]; ret.y = matrix[0][1] * p_vec3.x + matrix[1][1] * p_vec3.y + matrix[2][1] * p_vec3.z + matrix[3][1];

72
src/core/CameraMatrix.cpp → src/core/Projection.cpp
View File

@ -1,5 +1,5 @@
/*************************************************************************/ /*************************************************************************/
/* CameraMatrix.cpp */ /* Projection.cpp */
/*************************************************************************/ /*************************************************************************/
/* This file is part of: */ /* This file is part of: */
/* GODOT ENGINE */ /* GODOT ENGINE */
@ -28,9 +28,9 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/ /*************************************************************************/
#include "CameraMatrix.hpp" #include "Projection.hpp"
void CameraMatrix::set_identity() { void Projection::set_identity() {
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) { for (int j = 0; j < 4; j++) {
matrix[i][j] = (i == j) ? 1 : 0; matrix[i][j] = (i == j) ? 1 : 0;
@ -38,7 +38,7 @@ void CameraMatrix::set_identity() {
} }
} }
void CameraMatrix::set_zero() { void Projection::set_zero() {
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) { for (int j = 0; j < 4; j++) {
matrix[i][j] = 0; matrix[i][j] = 0;
@ -46,7 +46,7 @@ void CameraMatrix::set_zero() {
} }
} }
Plane CameraMatrix::xform4(const Plane &p_vec4) const { Plane Projection::xform4(const Plane &p_vec4) const {
Plane ret; Plane ret;
ret.normal.x = matrix[0][0] * p_vec4.normal.x + matrix[1][0] * p_vec4.normal.y + matrix[2][0] * p_vec4.normal.z + matrix[3][0] * p_vec4.d; ret.normal.x = matrix[0][0] * p_vec4.normal.x + matrix[1][0] * p_vec4.normal.y + matrix[2][0] * p_vec4.normal.z + matrix[3][0] * p_vec4.d;
@ -56,7 +56,7 @@ Plane CameraMatrix::xform4(const Plane &p_vec4) const {
return ret; return ret;
} }
void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov) { void Projection::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov) {
if (p_flip_fov) { if (p_flip_fov) {
p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect); p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect);
} }
@ -82,7 +82,7 @@ void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_
matrix[3][3] = 0; matrix[3][3] = 0;
} }
void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov, int p_eye, real_t p_intraocular_dist, real_t p_convergence_dist) { void Projection::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov, int p_eye, real_t p_intraocular_dist, real_t p_convergence_dist) {
if (p_flip_fov) { if (p_flip_fov) {
p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect); p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect);
} }
@ -114,13 +114,13 @@ void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_
set_frustum(left, right, -ymax, ymax, p_z_near, p_z_far); set_frustum(left, right, -ymax, ymax, p_z_near, p_z_far);
// translate matrix by (modeltranslation, 0.0, 0.0) // translate matrix by (modeltranslation, 0.0, 0.0)
CameraMatrix cm; Projection cm;
cm.set_identity(); cm.set_identity();
cm.matrix[3][0] = modeltranslation; cm.matrix[3][0] = modeltranslation;
*this = *this * cm; *this = *this * cm;
} }
void CameraMatrix::set_for_hmd(int p_eye, real_t p_aspect, real_t p_intraocular_dist, real_t p_display_width, real_t p_display_to_lens, real_t p_oversample, real_t p_z_near, real_t p_z_far) { void Projection::set_for_hmd(int p_eye, real_t p_aspect, real_t p_intraocular_dist, real_t p_display_width, real_t p_display_to_lens, real_t p_oversample, real_t p_z_near, real_t p_z_far) {
// we first calculate our base frustum on our values without taking our lens magnification into account. // we first calculate our base frustum on our values without taking our lens magnification into account.
real_t f1 = (p_intraocular_dist * 0.5) / p_display_to_lens; real_t f1 = (p_intraocular_dist * 0.5) / p_display_to_lens;
real_t f2 = ((p_display_width - p_intraocular_dist) * 0.5) / p_display_to_lens; real_t f2 = ((p_display_width - p_intraocular_dist) * 0.5) / p_display_to_lens;
@ -148,7 +148,7 @@ void CameraMatrix::set_for_hmd(int p_eye, real_t p_aspect, real_t p_intraocular_
}; };
}; };
void CameraMatrix::set_orthogonal(real_t p_left, real_t p_right, real_t p_bottom, real_t p_top, real_t p_znear, real_t p_zfar) { void Projection::set_orthogonal(real_t p_left, real_t p_right, real_t p_bottom, real_t p_top, real_t p_znear, real_t p_zfar) {
set_identity(); set_identity();
matrix[0][0] = 2.0 / (p_right - p_left); matrix[0][0] = 2.0 / (p_right - p_left);
@ -160,7 +160,7 @@ void CameraMatrix::set_orthogonal(real_t p_left, real_t p_right, real_t p_bottom
matrix[3][3] = 1.0; matrix[3][3] = 1.0;
} }
void CameraMatrix::set_orthogonal(real_t p_size, real_t p_aspect, real_t p_znear, real_t p_zfar, bool p_flip_fov) { void Projection::set_orthogonal(real_t p_size, real_t p_aspect, real_t p_znear, real_t p_zfar, bool p_flip_fov) {
if (!p_flip_fov) { if (!p_flip_fov) {
p_size *= p_aspect; p_size *= p_aspect;
} }
@ -168,7 +168,7 @@ void CameraMatrix::set_orthogonal(real_t p_size, real_t p_aspect, real_t p_znear
set_orthogonal(-p_size / 2, +p_size / 2, -p_size / p_aspect / 2, +p_size / p_aspect / 2, p_znear, p_zfar); set_orthogonal(-p_size / 2, +p_size / 2, -p_size / p_aspect / 2, +p_size / p_aspect / 2, p_znear, p_zfar);
} }
void CameraMatrix::set_frustum(real_t p_left, real_t p_right, real_t p_bottom, real_t p_top, real_t p_near, real_t p_far) { void Projection::set_frustum(real_t p_left, real_t p_right, real_t p_bottom, real_t p_top, real_t p_near, real_t p_far) {
ERR_FAIL_COND(p_right <= p_left); ERR_FAIL_COND(p_right <= p_left);
ERR_FAIL_COND(p_top <= p_bottom); ERR_FAIL_COND(p_top <= p_bottom);
ERR_FAIL_COND(p_far <= p_near); ERR_FAIL_COND(p_far <= p_near);
@ -200,7 +200,7 @@ void CameraMatrix::set_frustum(real_t p_left, real_t p_right, real_t p_bottom, r
te[15] = 0; te[15] = 0;
} }
void CameraMatrix::set_frustum(real_t p_size, real_t p_aspect, Vector2 p_offset, real_t p_near, real_t p_far, bool p_flip_fov) { void Projection::set_frustum(real_t p_size, real_t p_aspect, Vector2 p_offset, real_t p_near, real_t p_far, bool p_flip_fov) {
if (!p_flip_fov) { if (!p_flip_fov) {
p_size *= p_aspect; p_size *= p_aspect;
} }
@ -208,7 +208,7 @@ void CameraMatrix::set_frustum(real_t p_size, real_t p_aspect, Vector2 p_offset,
set_frustum(-p_size / 2 + p_offset.x, +p_size / 2 + p_offset.x, -p_size / p_aspect / 2 + p_offset.y, +p_size / p_aspect / 2 + p_offset.y, p_near, p_far); set_frustum(-p_size / 2 + p_offset.x, +p_size / 2 + p_offset.x, -p_size / p_aspect / 2 + p_offset.y, +p_size / p_aspect / 2 + p_offset.y, p_near, p_far);
} }
real_t CameraMatrix::get_z_far() const { real_t Projection::get_z_far() const {
const real_t *matrix = (const real_t *)this->matrix; const real_t *matrix = (const real_t *)this->matrix;
Plane new_plane = Plane(matrix[3] - matrix[2], Plane new_plane = Plane(matrix[3] - matrix[2],
matrix[7] - matrix[6], matrix[7] - matrix[6],
@ -220,7 +220,7 @@ real_t CameraMatrix::get_z_far() const {
return new_plane.d; return new_plane.d;
} }
real_t CameraMatrix::get_z_near() const { real_t Projection::get_z_near() const {
const real_t *matrix = (const real_t *)this->matrix; const real_t *matrix = (const real_t *)this->matrix;
Plane new_plane = Plane(matrix[3] + matrix[2], Plane new_plane = Plane(matrix[3] + matrix[2],
matrix[7] + matrix[6], matrix[7] + matrix[6],
@ -231,7 +231,7 @@ real_t CameraMatrix::get_z_near() const {
return new_plane.d; return new_plane.d;
} }
Vector2 CameraMatrix::get_viewport_half_extents() const { Vector2 Projection::get_viewport_half_extents() const {
const real_t *matrix = (const real_t *)this->matrix; const real_t *matrix = (const real_t *)this->matrix;
///////--- Near Plane ---/////// ///////--- Near Plane ---///////
Plane near_plane = Plane(matrix[3] + matrix[2], Plane near_plane = Plane(matrix[3] + matrix[2],
@ -259,7 +259,7 @@ Vector2 CameraMatrix::get_viewport_half_extents() const {
return Vector2(res.x, res.y); return Vector2(res.x, res.y);
} }
bool CameraMatrix::get_endpoints(const Transform &p_transform, Vector3 *p_8points) const { bool Projection::get_endpoints(const Transform &p_transform, Vector3 *p_8points) const {
std::vector<Plane> planes = get_projection_planes(Transform()); std::vector<Plane> planes = get_projection_planes(Transform());
const Planes intersections[8][3] = { const Planes intersections[8][3] = {
{ PLANE_FAR, PLANE_LEFT, PLANE_TOP }, { PLANE_FAR, PLANE_LEFT, PLANE_TOP },
@ -282,7 +282,7 @@ bool CameraMatrix::get_endpoints(const Transform &p_transform, Vector3 *p_8point
return true; return true;
} }
std::vector<Plane> CameraMatrix::get_projection_planes(const Transform &p_transform) const { std::vector<Plane> Projection::get_projection_planes(const Transform &p_transform) const {
/** Fast Plane Extraction from combined modelview/projection matrices. /** Fast Plane Extraction from combined modelview/projection matrices.
* References: * References:
* https://web.archive.org/web/20011221205252/http://www.markmorley.com/opengl/frustumculling.html * https://web.archive.org/web/20011221205252/http://www.markmorley.com/opengl/frustumculling.html
@ -364,13 +364,13 @@ std::vector<Plane> CameraMatrix::get_projection_planes(const Transform &p_transf
return planes; return planes;
} }
CameraMatrix CameraMatrix::inverse() const { Projection Projection::inverse() const {
CameraMatrix cm = *this; Projection cm = *this;
cm.invert(); cm.invert();
return cm; return cm;
} }
void CameraMatrix::invert() { void Projection::invert() {
int i, j, k; int i, j, k;
int pvt_i[4], pvt_j[4]; /* Locations of pivot matrix */ int pvt_i[4], pvt_j[4]; /* Locations of pivot matrix */
real_t pvt_val; /* Value of current pivot element */ real_t pvt_val; /* Value of current pivot element */
@ -466,12 +466,12 @@ void CameraMatrix::invert() {
} }
} }
CameraMatrix::CameraMatrix() { Projection::Projection() {
set_identity(); set_identity();
} }
CameraMatrix CameraMatrix::operator*(const CameraMatrix &p_matrix) const { Projection Projection::operator*(const Projection &p_matrix) const {
CameraMatrix new_matrix; Projection new_matrix;
for (int j = 0; j < 4; j++) { for (int j = 0; j < 4; j++) {
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
@ -485,7 +485,7 @@ CameraMatrix CameraMatrix::operator*(const CameraMatrix &p_matrix) const {
return new_matrix; return new_matrix;
} }
void CameraMatrix::set_light_bias() { void Projection::set_light_bias() {
real_t *m = &matrix[0][0]; real_t *m = &matrix[0][0];
m[0] = 0.5; m[0] = 0.5;
@ -506,7 +506,7 @@ void CameraMatrix::set_light_bias() {
m[15] = 1.0; m[15] = 1.0;
} }
void CameraMatrix::set_light_atlas_rect(const Rect2 &p_rect) { void Projection::set_light_atlas_rect(const Rect2 &p_rect) {
real_t *m = &matrix[0][0]; real_t *m = &matrix[0][0];
m[0] = p_rect.size.width; m[0] = p_rect.size.width;
@ -527,7 +527,7 @@ void CameraMatrix::set_light_atlas_rect(const Rect2 &p_rect) {
m[15] = 1.0; m[15] = 1.0;
} }
CameraMatrix::operator String() const { Projection::operator String() const {
String str; String str;
for (int i = 0; i < 4; i++) for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++) for (int j = 0; j < 4; j++)
@ -536,22 +536,22 @@ CameraMatrix::operator String() const {
return str; return str;
} }
real_t CameraMatrix::get_aspect() const { real_t Projection::get_aspect() const {
Vector2 vp_he = get_viewport_half_extents(); Vector2 vp_he = get_viewport_half_extents();
return vp_he.x / vp_he.y; return vp_he.x / vp_he.y;
} }
int CameraMatrix::get_pixels_per_meter(int p_for_pixel_width) const { int Projection::get_pixels_per_meter(int p_for_pixel_width) const {
Vector3 result = xform(Vector3(1, 0, -1)); Vector3 result = xform(Vector3(1, 0, -1));
return int((result.x * 0.5 + 0.5) * p_for_pixel_width); return int((result.x * 0.5 + 0.5) * p_for_pixel_width);
} }
bool CameraMatrix::is_orthogonal() const { bool Projection::is_orthogonal() const {
return matrix[3][3] == 1.0; return matrix[3][3] == 1.0;
} }
real_t CameraMatrix::get_fov() const { real_t Projection::get_fov() const {
const real_t *matrix = (const real_t *)this->matrix; const real_t *matrix = (const real_t *)this->matrix;
Plane right_plane = Plane(matrix[3] - matrix[0], Plane right_plane = Plane(matrix[3] - matrix[0],
@ -574,14 +574,14 @@ real_t CameraMatrix::get_fov() const {
} }
} }
void CameraMatrix::make_scale(const Vector3 &p_scale) { void Projection::make_scale(const Vector3 &p_scale) {
set_identity(); set_identity();
matrix[0][0] = p_scale.x; matrix[0][0] = p_scale.x;
matrix[1][1] = p_scale.y; matrix[1][1] = p_scale.y;
matrix[2][2] = p_scale.z; matrix[2][2] = p_scale.z;
} }
void CameraMatrix::scale_translate_to_fit(const AABB &p_aabb) { void Projection::scale_translate_to_fit(const AABB &p_aabb) {
Vector3 min = p_aabb.position; Vector3 min = p_aabb.position;
Vector3 max = p_aabb.position + p_aabb.size; Vector3 max = p_aabb.position + p_aabb.size;
@ -606,7 +606,7 @@ void CameraMatrix::scale_translate_to_fit(const AABB &p_aabb) {
matrix[3][3] = 1; matrix[3][3] = 1;
} }
CameraMatrix::operator Transform() const { Projection::operator Transform() const {
Transform tr; Transform tr;
const real_t *m = &matrix[0][0]; const real_t *m = &matrix[0][0];
@ -629,7 +629,7 @@ CameraMatrix::operator Transform() const {
return tr; return tr;
} }
CameraMatrix::CameraMatrix(const Transform &p_transform) { Projection::Projection(const Transform &p_transform) {
const Transform &tr = p_transform; const Transform &tr = p_transform;
real_t *m = &matrix[0][0]; real_t *m = &matrix[0][0];
@ -651,5 +651,5 @@ CameraMatrix::CameraMatrix(const Transform &p_transform) {
m[15] = 1.0; m[15] = 1.0;
} }
CameraMatrix::~CameraMatrix() { Projection::~Projection() {
} }