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Finished ellipse app

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This commit is contained in:
Dawid Pietrykowski 2022-11-24 19:14:49 +01:00
parent 571094bc01
commit 55c22881de
3 changed files with 135 additions and 48 deletions
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105
QT/kolo/mywindow.cpp
View File

@ -6,8 +6,13 @@
// z pliku XML "mywindow.ui"
#include "ui_mywindow.h"
#include <iostream>
#include <cmath>
#include <QColor>
#include <QDebug>
#include <QColorDialog>
#include <iostream>
#include <float.h> // for float,double macros
#include <string.h>
#define PI 3.1415
@ -32,6 +37,10 @@ MyWindow::MyWindow(QWidget *parent) :
poczX = ui->rysujFrame->x();
poczY = ui->rysujFrame->y();
segment_count = ui->segmentSlider->value();
QString str(("Ilosc segmentow: " + std::to_string(segment_count)).c_str());
ui->segmentLabel->setText(str);
// Tworzymy obiekt klasy QImage, o odpowiedniej szerokosci
// i wysokosci. Ustawiamy format bitmapy na 32 bitowe RGB
// (0xffRRGGBB).
@ -60,6 +69,14 @@ void MyWindow::on_exitButton_clicked()
}
void MyWindow::on_segmentSlider_valueChanged(int val)
{
segment_count = val;
QString str(("Ilosc segmentow: " + std::to_string(segment_count)).c_str());
ui->segmentLabel->setText(str);
}
// Funkcja "odmalowujaca" komponent
void MyWindow::paintEvent(QPaintEvent*)
{
@ -135,6 +152,8 @@ void MyWindow::mousePressEvent(QMouseEvent *event)
draw_finished = false;
mode = event->button() == Qt::LeftButton ? Circle : event->button() == Qt::RightButton ? Ellipse : Other;
update();
}
@ -150,7 +169,7 @@ void MyWindow::mouseMoveEvent(QMouseEvent *event)
x -= poczX;
y -= poczY;
if(x >= szer || y >= wys || x < 0 || y < 0){
if(x >= szer || y >= wys || x < 0 || y < 0 || draw_finished){
ApplyTempImage();
active_img = img;
@ -162,7 +181,11 @@ void MyWindow::mouseMoveEvent(QMouseEvent *event)
return;
}
if(mode == Circle){
DrawCircle(startX, startY, x, y);
}else if(mode == Ellipse){
DrawEllipse(startX, startY, x, y);
}
// Odswiezamy komponent
update();
@ -189,53 +212,51 @@ void MyWindow::UpdateTempImage(){
memcpy(img_tmp->bits(), img->bits(), szer * wys * 4);
}
void Rysuj(unsigned char* ptr, int szer, int wys, int x, int y){
void DrawPixel(unsigned char* ptr, int szer, int wys, QColor color, int x, int y){
if(x >= szer || y >= wys || x < 0 || y < 0)
return;
int kolor = 255;
ptr[szer*4*y + 4*x] = kolor;
ptr[szer*4*y + 4*x + 1] = kolor;
ptr[szer*4*y + 4*x + 2] = kolor;
ptr[szer*4*y + 4*x + 3] = 255;
ptr[szer*4*y + 4*x] = color.blue();
ptr[szer*4*y + 4*x + 1] = color.green();
ptr[szer*4*y + 4*x + 2] = color.red();
ptr[szer*4*y + 4*x + 3] = color.alpha();
}
void MyWindow::DrawLine(int x1, int y1, int x2, int y2, bool update_temp){
if(x2 >= szer || y2 >= wys || x2 < 0 || y2 < 0)
return;
if(update_temp)
UpdateTempImage();
unsigned char* ptr = img_tmp->bits();
if(x1 > x2){
int tmpX = x1;
int tmpY = y1;
x1 = x2;
y1 = y2;
x2 = tmpX;
y2 = tmpY;
std::swap(x1, x2);
std::swap(y1, y2);
}
int kolor = 255;
unsigned char *ptr;
int y = y2;
ptr = img_tmp->bits();
float diff = x2 - x1;
float a = (y2 - y1) / diff;
for(int i = x1; i <= x2; i++){
int x = i;
y = a * (i - x1) + y1;
float a = diff != 0 ? (y2 - y1) / diff : FLT_MAX;
QColor color(255, 255, 255, 255);
Rysuj(ptr, szer, wys, x, y);
// Ustawiamy kolor kliknietego piksela na bialy lub czarny
// ptr[szer*4*y + 4*x] = kolor;
// ptr[szer*4*y + 4*x + 1] = kolor;
// ptr[szer*4*y + 4*x + 2] = kolor;
// ptr[szer*4*y + 4*x + 3] = 255;
if(abs(a) < 0.5f){
for(int x = x1; x <= x2; x++){
int x_form = x - x1;
int y = a * x_form + y1;
DrawPixel(ptr, szer, wys, color, x, y);
}
}
else{
if(y1 > y2){
std::swap(x1, x2);
std::swap(y1, y2);
}
float diff = x2 - x1;
float a = diff != 0 ? (y2 - y1) / diff : FLT_MAX;
for(int y = y1; y <= y2; y++){
int y_form = y - y1;
int x = ((float)(y_form) / a) + x1;
DrawPixel(ptr, szer, wys, color, x, y);
}
}
}
@ -252,13 +273,15 @@ void MyWindow::DrawCircle(int x1, int y1, int x2, int y2){
float R = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
int q_last_x = R / sqrt(2) + 1;
QColor color(255, 255, 255, 255);
for(int x = 0; x <= q_last_x; x++){
float y = sqrt(pow(R, 2) - pow(x, 2));
for(int k = 0; k < 2; k++){
for(int i = 0; i < 2; i++){
for(int j = 0; j < 2; j++){
Rysuj(ptr, szer, wys, x1 + x, y1 - y);
DrawPixel(ptr, szer, wys, color, x1 + x, y1 - y);
y *= -1;
}
x *= -1;
@ -275,20 +298,14 @@ void MyWindow::DrawEllipse(int x1, int y1, int x2, int y2){
UpdateTempImage();
int point_count = 60;
unsigned char *ptr;
ptr = img_tmp->bits();
float last_x = 0;
float last_y = 0;
float Rx = abs(x2 - x1);
float Ry = abs(y2 - y1);
for(int i = 0; i < point_count; i++){
double angle = 2.0 * PI * (float(i) / point_count);
for(int i = 0; i <= segment_count; i++){
double angle = 2.0 * PI * (float(i) / segment_count);
float x = sin(angle) * Rx;
float y = cos(angle) * Ry;

6
QT/kolo/mywindow.h
View File

@ -28,6 +28,8 @@
// klikniecia, ruch myszka itp.
#include <QMouseEvent>
enum Mode {Ellipse, Circle, Other};
namespace Ui {
class MyWindow;
}
@ -59,6 +61,8 @@ private:
// Do poszczegolnych elementow GUI odwolujemy sie za pomoca zmiennej "ui"
Ui::MyWindow *ui;
Mode mode;
// Pole przechowujace obrazek
QImage *img;
// Pole przechowujace obrazek
@ -74,6 +78,7 @@ private:
int poczY;
int startX, startY;
bool draw_finished;
int segment_count;
// Deklaracje funkcji
@ -93,6 +98,7 @@ private:
private slots:
void on_cleanButton_clicked();
void on_exitButton_clicked();
void on_segmentSlider_valueChanged(int val);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);

68
QT/kolo/mywindow.ui
View File

@ -42,11 +42,11 @@
<x>630</x>
<y>10</y>
<width>241</width>
<height>191</height>
<height>271</height>
</rect>
</property>
<property name="title">
<string>Wypełnianie</string>
<string>Opcje</string>
</property>
<widget class="QPushButton" name="cleanButton">
<property name="geometry">
@ -74,6 +74,70 @@
<string>Wyjście</string>
</property>
</widget>
<widget class="QSlider" name="segmentSlider">
<property name="geometry">
<rect>
<x>10</x>
<y>150</y>
<width>221</width>
<height>20</height>
</rect>
</property>
<property name="minimum">
<number>4</number>
</property>
<property name="maximum">
<number>100</number>
</property>
<property name="value">
<number>10</number>
</property>
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="tickPosition">
<enum>QSlider::TicksAbove</enum>
</property>
<property name="tickInterval">
<number>10</number>
</property>
</widget>
<widget class="QLabel" name="segmentLabel">
<property name="geometry">
<rect>
<x>10</x>
<y>120</y>
<width>131</width>
<height>20</height>
</rect>
</property>
<property name="text">
<string>TextLabel</string>
</property>
</widget>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>10</x>
<y>186</y>
<width>221</width>
<height>71</height>
</rect>
</property>
<property name="text">
<string>Przytrzymaj lewy przycisk myszy by utworzyć okrąg.
Przytrzymaj prawy przycisk myszy by utworzyć elipse.</string>
</property>
<property name="textFormat">
<enum>Qt::PlainText</enum>
</property>
<property name="scaledContents">
<bool>false</bool>
</property>
<property name="wordWrap">
<bool>true</bool>
</property>
</widget>
</widget>
</widget>
<widget class="QMenuBar" name="menuBar">