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Revert "Merge branch 'vector_clip_actions' into feature" 

This reverts commit bd4e79fdf9, reversing
changes made to 9d4a67b523.
This commit is contained in:
arch1t3cht 2023-01-26 23:34:14 +01:00
parent c6b901dfbe
commit a632f5f7ee
9 changed files with 0 additions and 587 deletions
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10
src/command/vis_tool.cpp
View File

@ -23,7 +23,6 @@
#include "../visual_tool_clip.h"
#include "../visual_tool_cross.h"
#include "../visual_tool_drag.h"
#include "../visual_tool_perspective.h"
#include "../visual_tool_rotatexy.h"
#include "../visual_tool_rotatez.h"
#include "../visual_tool_scale.h"
@ -101,14 +100,6 @@ namespace {
STR_HELP("Rotate subtitles on their X and Y axes")
};
struct visual_mode_perspective final : public visual_tool_command<VisualToolPerspective> {
CMD_NAME("video/tool/perspective")
CMD_ICON(visual_vector_clip_drag) //TODO
STR_MENU("Apply 3D Perspective")
STR_DISP("Apply 3D Perspective")
STR_HELP("Rotate and shear subtitles to make them fit a given quad's perspective")
};
struct visual_mode_scale final : public visual_tool_command<VisualToolScale> {
CMD_NAME("video/tool/scale")
CMD_ICON(visual_scale)
@ -200,7 +191,6 @@ namespace cmd {
reg(agi::make_unique<visual_mode_drag>());
reg(agi::make_unique<visual_mode_rotate_z>());
reg(agi::make_unique<visual_mode_rotate_xy>());
reg(agi::make_unique<visual_mode_perspective>());
reg(agi::make_unique<visual_mode_scale>());
reg(agi::make_unique<visual_mode_clip>());
reg(agi::make_unique<visual_mode_vector_clip>());

1
src/libresrc/default_toolbar.json
View File

@ -73,7 +73,6 @@
"video/tool/drag",
"video/tool/rotate/z",
"video/tool/rotate/xy",
"video/tool/perspective",
"video/tool/scale",
"video/tool/clip",
"video/tool/vector_clip",

2
src/meson.build
View File

@ -144,7 +144,6 @@ aegisub_src = files(
'utils.cpp',
'validators.cpp',
'vector2d.cpp',
'vector3d.cpp',
'version.cpp',
'video_box.cpp',
'video_controller.cpp',
@ -161,7 +160,6 @@ aegisub_src = files(
'visual_tool_clip.cpp',
'visual_tool_cross.cpp',
'visual_tool_drag.cpp',
'visual_tool_perspective.cpp',
'visual_tool_rotatexy.cpp',
'visual_tool_rotatez.cpp',
'visual_tool_scale.cpp',

99
src/vector3d.cpp
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@ -1,99 +0,0 @@
// Copyright (c) 2022, arch1t3cht <arch1t3cht@gmail.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
/// @file vector3d.cpp
/// @brief 3D mathematical vector used in visual typesetting
/// @ingroup utility visual_ts
///
#include "vector3d.h"
#include "utils.h"
#include <libaegisub/format.h>
#include <cmath>
#include <limits>
Vector3D::Vector3D()
: x(std::numeric_limits<float>::min())
, y(std::numeric_limits<float>::min())
, z(std::numeric_limits<float>::min())
{
}
Vector3D operator *(float f, Vector3D v) {
return Vector3D(v.X() * f, v.Y() * f, v.Z() * f);
}
Vector3D operator /(float f, Vector3D v) {
return Vector3D(f / v.X(), f / v.Y(), f / v.Z());
}
Vector3D operator +(float f, Vector3D v) {
return Vector3D(v.X() + f, v.Y() + f, v.Z() + f);
}
Vector3D operator -(float f, Vector3D v) {
return Vector3D(f - v.X(), f - v.Y(), f - v.Z());
}
Vector3D Vector3D::Unit() const {
float len = Len();
if (len == 0)
return Vector3D(0, 0, 0);
return *this / len;
}
Vector3D Vector3D::RotateX(float angle) const {
return Vector3D(x, y * cos(angle) - z * sin(angle), y * sin(angle) + z * cos(angle));
}
Vector3D Vector3D::RotateY(float angle) const {
return Vector3D(x * cos(angle) - z * sin(angle), y, x * sin(angle) + z * cos(angle));
}
Vector3D Vector3D::RotateZ(float angle) const {
return Vector3D(x * cos(angle) - y * sin(angle), x * sin(angle) + y * cos(angle), z);
}
Vector3D Vector3D::Max(Vector3D param) const {
return Vector3D(std::max(x, param.x), std::max(y, param.y), std::max(z, param.z));
}
Vector3D Vector3D::Min(Vector3D param) const {
return Vector3D(std::min(x, param.x), std::min(y, param.y), std::max(z, param.z));
}
Vector3D Vector3D::Round(float step) const {
return Vector3D(floorf(x / step + .5f) * step, floorf(y / step + .5f) * step, floorf(z / step + .5f));
}
Vector3D::operator bool() const {
return *this != Vector3D();
}
std::string Vector3D::PStr(char sep) const {
return "(" + Str(sep) + ")";
}
std::string Vector3D::DStr(char sep) const {
return agi::format("%d%c%d%c%d", (int)x, sep, (int)y, sep, (int)z);
}
std::string Vector3D::Str(char sep) const {
return float_to_string(x,2) + sep + float_to_string(y,2) + sep + float_to_string(z, 2);
}

83
src/vector3d.h
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@ -1,83 +0,0 @@
// Copyright (c) 2022, arch1t3cht <arch1t3cht@gmail.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
/// @file vector3d.h
/// @see vector3d.cpp
/// @ingroup utility visual_ts
///
#pragma once
#include <cmath>
#include <string>
#include "vector2d.h"
class Vector3D {
float x, y, z;
public:
float X() const { return x; }
float Y() const { return y; }
float Z() const { return z; }
Vector2D XY() const { return Vector2D(x, y); }
Vector3D();
Vector3D(Vector2D xy) : x(xy.X()), y(xy.Y()), z(0.) { }
Vector3D(Vector2D xy, float z) : x(xy.X()), y(xy.Y()), z(z) { }
Vector3D(float x, float y, float z) : x(x), y(y), z(z) { }
bool operator ==(const Vector3D r) const { return x == r.x && y == r.y; }
bool operator !=(const Vector3D r) const { return x != r.x || y != r.y; }
explicit operator bool() const;
Vector3D operator -() const { return Vector3D(-x, -y, -z); }
Vector3D operator +(const Vector3D r) const { return Vector3D(x + r.x, y + r.y, z + r.z); }
Vector3D operator -(const Vector3D r) const { return Vector3D(x - r.x, y - r.y, z - r.z); }
Vector3D operator *(const Vector3D r) const { return Vector3D(x * r.x, y * r.y, z * r.z); }
Vector3D operator /(const Vector3D r) const { return Vector3D(x / r.x, y / r.y, z / r.z); }
Vector3D operator +(float param) const { return Vector3D(x + param, y + param, z + param); }
Vector3D operator -(float param) const { return Vector3D(x - param, y - param, z - param); }
Vector3D operator *(float param) const { return Vector3D(x * param, y * param, z * param); }
Vector3D operator /(float param) const { return Vector3D(x / param, y / param, z / param); }
Vector3D Unit() const;
Vector3D RotateX(float angle) const;
Vector3D RotateY(float angle) const;
Vector3D RotateZ(float angle) const;
Vector3D Max(Vector3D param) const;
Vector3D Min(Vector3D param) const;
Vector3D Round(float step) const;
Vector3D Cross(const Vector3D param) const { return Vector3D(y * param.z - z * param.y, z * param.x - x * param.z, x * param.y - y * param.x); }
float Dot(const Vector3D param) const { return x * param.x + y * param.y + z * param.z; }
float Len() const { return sqrt(x*x + y*y + z*z); }
float SquareLen() const { return x*x + y*y + z*z; }
/// Get as string with given separator
std::string Str(char sep = ',') const;
/// Get as string surrounded by parentheses with given separator
std::string PStr(char sep = ',') const;
/// Get as string with given separator with values rounded to ints
std::string DStr(char sep = ',') const;
};
Vector3D operator * (float f, Vector3D v);
Vector3D operator / (float f, Vector3D v);
Vector3D operator + (float f, Vector3D v);
Vector3D operator - (float f, Vector3D v);

52
src/visual_tool.cpp
View File

@ -23,7 +23,6 @@
#include "ass_dialogue.h"
#include "ass_file.h"
#include "ass_style.h"
#include "auto4_base.h"
#include "compat.h"
#include "include/aegisub/context.h"
#include "options.h"
@ -476,57 +475,6 @@ void VisualToolBase::GetLineScale(AssDialogue *diag, Vector2D &scale) {
scale = Vector2D(x, y);
}
float VisualToolBase::GetLineFontSize(AssDialogue *diag) {
float fs = 0.f;
if (AssStyle *style = c->ass->GetStyle(diag->Style))
fs = style->fontsize;
auto blocks = diag->ParseTags();
if (param_vec tag = find_tag(blocks, "\\fs"))
fs = tag->front().Get(fs);
return fs;
}
int VisualToolBase::GetLineAlignment(AssDialogue *diag) {
int an = 0;
if (AssStyle *style = c->ass->GetStyle(diag->Style))
an = style->alignment;
auto blocks = diag->ParseTags();
if (param_vec tag = find_tag(blocks, "\\an"))
an = tag->front().Get(an);
return an;
}
void VisualToolBase::GetLineBaseExtents(AssDialogue *diag, double &width, double &height, double &descent, double &extlead) {
width = 0.;
height = 0.;
descent = 0.;
extlead = 0.;
AssStyle style;
if (AssStyle *basestyle = c->ass->GetStyle(diag->Style)) {
style = AssStyle(basestyle->GetEntryData());
style.scalex = 100.;
style.scaley = 100.;
}
auto blocks = diag->ParseTags();
if (param_vec tag = find_tag(blocks, "\\fs"))
style.fontsize = tag->front().Get(style.fontsize);
if (param_vec tag = find_tag(blocks, "\\fn"))
style.font = tag->front().Get(style.font);
std::string text = diag->GetStrippedText();
if (!Automation4::CalculateTextExtents(&style, text, width, height, descent, extlead)) {
// meh... let's make some ballpark estimates
width = style.fontsize * text.length();
height = style.fontsize;
}
}
void VisualToolBase::GetLineClip(AssDialogue *diag, Vector2D &p1, Vector2D &p2, bool &inverse) {
inverse = false;

8
src/visual_tool.h
View File

@ -128,14 +128,6 @@ protected:
void GetLineRotation(AssDialogue *diag, float &rx, float &ry, float &rz);
void GetLineShear(AssDialogue *diag, float& fax, float& fay);
void GetLineScale(AssDialogue *diag, Vector2D &scale);
float GetLineFontSize(AssDialogue *diag);
int GetLineAlignment(AssDialogue *diag);
/// @brief Compute text extents of the given line without any formatting
///
/// Formatting tags are stripped and \fs tags are respected, but \fscx and \fscy are kept as 100 even if
/// they are different in the style.
/// Returns a rough estimate when getting the precise extents fails
void GetLineBaseExtents(AssDialogue *diag, double &width, double &height, double &descent, double &extlead);
void GetLineClip(AssDialogue *diag, Vector2D &p1, Vector2D &p2, bool &inverse);
std::string GetLineVectorClip(AssDialogue *diag, int &scale, bool &inverse);

271
src/visual_tool_perspective.cpp
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@ -1,271 +0,0 @@
// Copyright (c) 2022, arch1t3cht <arch1t3cht@gmail.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
/// @file visual_tool_perspective.cpp
/// @brief 3D perspective visual typesetting tool
/// @ingroup visual_ts
#include "visual_tool_perspective.h"
#include "compat.h"
#include "include/aegisub/context.h"
#include "options.h"
#include "selection_controller.h"
#include "vector3d.h"
#include <libaegisub/format.h>
#include <cmath>
#include <wx/colour.h>
static const float deg2rad = 3.1415926536f / 180.f;
static const float rad2deg = 180.f / 3.1415926536f;
static const float screen_z = 312.5;
void VisualToolPerspective::Solve2x2Proper(float a11, float a12, float a21, float a22, float b1, float b2, float &x1, float &x2) {
// LU decomposition
// i = 1
a21 = a21 / a11;
// i = 2
a22 = a22 - a21 * a12;
// forward substitution
float z1 = b1;
float z2 = b2 - a21 * z1;
// backward substitution
x2 = z2 / a22;
x1 = (z1 - a12 * x2) / a11;
}
void VisualToolPerspective::Solve2x2(float a11, float a12, float a21, float a22, float b1, float b2, float &x1, float &x2) {
// Simple pivoting
if (abs(a11) >= abs(a21))
Solve2x2Proper(a11, a12, a21, a22, b1, b2, x1, x2);
else
Solve2x2Proper(a21, a22, a11, a12, b2, b1, x1, x2);
}
VisualToolPerspective::VisualToolPerspective(VideoDisplay *parent, agi::Context *context)
: VisualTool<VisualDraggableFeature>(parent, context)
{
orgf = new Feature;
orgf->type = DRAG_BIG_TRIANGLE;
features.push_back(*orgf);
for (int i = 0; i < 4; i++) {
quad_corners.push_back(new Feature);
old_positions.push_back(Vector2D());
quad_corners.back()->type = DRAG_SMALL_CIRCLE;
features.push_back(*quad_corners.back());
}
}
void VisualToolPerspective::Draw() {
if (!active_line) return;
wxColour line_color = to_wx(line_color_primary_opt->GetColor());
gl.SetLineColour(line_color);
for (int i = 0; i < 4; i++) {
gl.DrawDashedLine(quad_corners[i]->pos, quad_corners[(i + 1) % 4]->pos, 6);
}
DrawAllFeatures();
}
void VisualToolPerspective::UpdateDrag(Feature *feature) {
if (feature == orgf) {
Vector2D diff = orgf->pos - old_orgf;
for (int i = 0; i < 4; i++) {
quad_corners[i]->pos = quad_corners[i]->pos + diff;
}
}
Vector2D q1 = ToScriptCoords(quad_corners[0]->pos);
Vector2D q2 = ToScriptCoords(quad_corners[1]->pos);
Vector2D q3 = ToScriptCoords(quad_corners[2]->pos);
Vector2D q4 = ToScriptCoords(quad_corners[3]->pos);
Vector2D diag1 = q3 - q1;
Vector2D diag2 = q2 - q4;
Vector2D b = q4 - q1;
float center_la1, center_la2;
Solve2x2(diag1.X(), diag2.X(), diag1.Y(), diag2.Y(), b.X(), b.Y(), center_la1, center_la2);
if (center_la1 < 0 || center_la1 > 1 || -center_la2 < 0 || -center_la2 > 1) {
ResetFeaturePositions();
return;
}
Vector2D center = q1 + center_la1 * diag1;
// Normalize to center
q1 = q1 - center;
q2 = q2 - center;
q3 = q3 - center;
q4 = q4 - center;
// Find a parallelogram projecting to the quad
float z2, z4;
Vector2D side1 = q2 - q3;
Vector2D side2 = q4 - q3;
Solve2x2(side1.X(), side2.X(), side1.Y(), side2.Y(), -diag1.X(), -diag1.Y(), z2, z4);
float scalefactor = (z2 + z4) / 2;
Vector3D r1 = Vector3D(q1, screen_z) / scalefactor;
Vector3D r2 = z2 * Vector3D(q2, screen_z) / scalefactor;
Vector3D r4 = z4 * Vector3D(q4, screen_z) / scalefactor;
// Find the rotations
Vector3D n = (r2 - r1).Cross(r4 - r1);
float roty = atan(n.X() / n.Z());
n = n.RotateY(roty);
float rotx = atan(n.Y() / n.Z());
Vector3D ab = (r2 - r1).RotateY(roty).RotateX(rotx);
float rotz = atan(ab.Y() / ab.X());
Vector3D ad = (r4 - r1).RotateY(roty).RotateX(rotx).RotateZ(-rotz);
float fax = ad.X() / ad.Y();
float scalex = ab.Len() / textwidth;
float scaley = ad.Y() / textheight;
for (auto line : c->selectionController->GetSelectedSet()) {
angle_x = rotx * rad2deg;
angle_y = -roty * rad2deg;
angle_z = -rotz * rad2deg;
orgf->pos = FromScriptCoords(center);
SetOverride(line, "\\fax", agi::format("%.6f", fax * scaley / scalex));
SetOverride(line, "\\fay", agi::format("%.4f", 0)); // TODO just kill the tag
SetOverride(line, "\\fscx", agi::format("%.2f", 100 * scalex));
SetOverride(line, "\\fscy", agi::format("%.2f", 100 * scaley));
SetOverride(line, "\\frz", agi::format("%.4f", angle_z));
SetOverride(line, "\\frx", agi::format("%.4f", angle_x));
SetOverride(line, "\\fry", agi::format("%.4f", angle_y));
SetOverride(line, "\\pos", (center - Vector2D(fax_shift_factor * fax * scaley, 0)).PStr());
SetOverride(line, "\\org", center.PStr());
}
SaveFeaturePositions();
}
void VisualToolPerspective::ResetFeaturePositions() {
for (int i = 0; i < 4; i++) {
quad_corners[i]->pos = old_positions[i];
}
orgf->pos = old_orgf;
}
void VisualToolPerspective::SaveFeaturePositions() {
for (int i = 0; i < 4; i++) {
old_positions[i] = quad_corners[i]->pos;
}
old_orgf = orgf->pos;
}
void VisualToolPerspective::SetFeaturePositions() {
double textleft, texttop = 0.;
switch ((align - 1) % 3) {
case 1:
textleft = -textwidth / 2;
break;
case 2:
textleft = -textwidth;
break;
default:
break;
}
switch ((align - 1) / 3) {
case 0:
texttop = -textheight;
break;
case 1:
texttop = -textheight / 2;
break;
default:
break;
}
Vector2D textrect[] = {
Vector2D(0, 0),
Vector2D(textwidth, 0),
Vector2D(textwidth, textheight),
Vector2D(0, textheight),
};
for (int i = 0; i < 4; i++) {
Vector2D p = textrect[i];
// Apply \fax and \fay
p = Vector2D(p.X() + p.Y() * fax, p.X() * fay + p.Y());
// Translate to alignment point
p = p + Vector2D(textleft, texttop);
// Apply scaling
p = Vector2D(p.X() * fsc.X() / 100., p.Y() * fsc.Y() / 100.);
// Translate relative to origin
p = p + pos - org;
// Rotate ZXY
Vector3D q(p);
q = q.RotateZ(-angle_z * deg2rad);
q = q.RotateX(-angle_x * deg2rad);
q = q.RotateY(angle_y * deg2rad);
// Project
q = (screen_z / (q.Z() + screen_z)) * q;
// Move to origin
Vector2D r = q.XY() + org;
quad_corners[i]->pos = FromScriptCoords(r);
}
if (!(orgf->pos = org))
orgf->pos = pos;
orgf->pos = FromScriptCoords(orgf->pos);
SaveFeaturePositions();
}
void VisualToolPerspective::DoRefresh() {
if (!active_line) return;
org = GetLineOrigin(active_line);
pos = GetLinePosition(active_line);
if (!org)
org = pos;
GetLineRotation(active_line, angle_x, angle_y, angle_z);
GetLineShear(active_line, fax, fay);
GetLineScale(active_line, fsc);
float fs = GetLineFontSize(active_line);
align = GetLineAlignment(active_line);
switch (align) {
case 1:
case 2:
case 3:
fax_shift_factor = fs;
break;
case 4:
case 5:
case 6:
fax_shift_factor = fs / 2;
break;
default:
fax_shift_factor = 0.;
break;
}
double descend, extlead;
GetLineBaseExtents(active_line, textwidth, textheight, descend, extlead);
SetFeaturePositions();
}

61
src/visual_tool_perspective.h
View File

@ -1,61 +0,0 @@
// Copyright (c) 2022, arch1t3cht <arch1t3cht@gmail.com>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
/// @file visual_tool_perspective.h
/// @see visual_tool_perspective.cpp
/// @ingroup visual_ts
///
#include "visual_feature.h"
#include "visual_tool.h"
class VisualToolPerspective final : public VisualTool<VisualDraggableFeature> {
float angle_x = 0.f; /// Current x rotation
float angle_y = 0.f; /// Current y rotation
float angle_z = 0.f; /// Current z rotation
float fax = 0.f;
float fay = 0.f;
int align = 0;
float fax_shift_factor = 0.f;
double textwidth = 0.f;
double textheight = 0.f;
Vector2D fsc;
Vector2D org;
Vector2D pos;
Feature *orgf;
Vector2D old_orgf;
std::vector<Vector2D> old_positions;
std::vector<Feature *> quad_corners;
void Solve2x2Proper(float a11, float a12, float a21, float a22, float b1, float b2, float &x1, float &x2);
void Solve2x2(float a11, float a12, float a21, float a22, float b1, float b2, float &x1, float &x2);
void DoRefresh() override;
void Draw() override;
void UpdateDrag(Feature *feature) override;
void SetFeaturePositions();
void ResetFeaturePositions();
void SaveFeaturePositions();
public:
VisualToolPerspective(VideoDisplay *parent, agi::Context *context);
};