Finished ellipse app
This commit is contained in:
Dawid Pietrykowski
parent
571094bc01
commit
55c22881de
@ -6,8 +6,13 @@
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// z pliku XML "mywindow.ui"
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#include "ui_mywindow.h"
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#include <iostream>
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#include <cmath>
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#include <QColor>
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#include <QDebug>
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#include <QColorDialog>
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#include <iostream>
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#include <float.h> // for float,double macros
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#include <string.h>
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#define PI 3.1415
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@ -32,6 +37,10 @@ MyWindow::MyWindow(QWidget *parent) :
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poczX = ui->rysujFrame->x();
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poczY = ui->rysujFrame->y();
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segment_count = ui->segmentSlider->value();
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QString str(("Ilosc segmentow: " + std::to_string(segment_count)).c_str());
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ui->segmentLabel->setText(str);
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// Tworzymy obiekt klasy QImage, o odpowiedniej szerokosci
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// i wysokosci. Ustawiamy format bitmapy na 32 bitowe RGB
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// (0xffRRGGBB).
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@ -60,6 +69,14 @@ void MyWindow::on_exitButton_clicked()
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}
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void MyWindow::on_segmentSlider_valueChanged(int val)
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{
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segment_count = val;
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QString str(("Ilosc segmentow: " + std::to_string(segment_count)).c_str());
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ui->segmentLabel->setText(str);
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}
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// Funkcja "odmalowujaca" komponent
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void MyWindow::paintEvent(QPaintEvent*)
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{
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@ -135,6 +152,8 @@ void MyWindow::mousePressEvent(QMouseEvent *event)
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draw_finished = false;
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mode = event->button() == Qt::LeftButton ? Circle : event->button() == Qt::RightButton ? Ellipse : Other;
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update();
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}
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@ -150,7 +169,7 @@ void MyWindow::mouseMoveEvent(QMouseEvent *event)
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x -= poczX;
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y -= poczY;
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if(x >= szer || y >= wys || x < 0 || y < 0){
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if(x >= szer || y >= wys || x < 0 || y < 0 || draw_finished){
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ApplyTempImage();
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active_img = img;
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@ -162,7 +181,11 @@ void MyWindow::mouseMoveEvent(QMouseEvent *event)
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return;
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}
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DrawEllipse(startX, startY, x, y);
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if(mode == Circle){
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DrawCircle(startX, startY, x, y);
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}else if(mode == Ellipse){
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DrawEllipse(startX, startY, x, y);
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}
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// Odswiezamy komponent
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update();
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@ -186,56 +209,54 @@ void MyWindow::ApplyTempImage(){
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}
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void MyWindow::UpdateTempImage(){
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memcpy(img_tmp->bits(), img->bits(), szer * wys * 4);
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memcpy(img_tmp->bits(), img->bits(), szer * wys * 4);
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}
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void Rysuj(unsigned char* ptr, int szer, int wys, int x, int y){
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void DrawPixel(unsigned char* ptr, int szer, int wys, QColor color, int x, int y){
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if(x >= szer || y >= wys || x < 0 || y < 0)
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return;
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int kolor = 255;
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ptr[szer*4*y + 4*x] = kolor;
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ptr[szer*4*y + 4*x + 1] = kolor;
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ptr[szer*4*y + 4*x + 2] = kolor;
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ptr[szer*4*y + 4*x + 3] = 255;
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ptr[szer*4*y + 4*x] = color.blue();
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ptr[szer*4*y + 4*x + 1] = color.green();
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ptr[szer*4*y + 4*x + 2] = color.red();
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ptr[szer*4*y + 4*x + 3] = color.alpha();
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}
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void MyWindow::DrawLine(int x1, int y1, int x2, int y2, bool update_temp){
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if(x2 >= szer || y2 >= wys || x2 < 0 || y2 < 0)
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return;
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if(update_temp)
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UpdateTempImage();
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unsigned char* ptr = img_tmp->bits();
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if(x1 > x2){
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int tmpX = x1;
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int tmpY = y1;
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x1 = x2;
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y1 = y2;
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x2 = tmpX;
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y2 = tmpY;
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std::swap(x1, x2);
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std::swap(y1, y2);
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}
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int kolor = 255;
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unsigned char *ptr;
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int y = y2;
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ptr = img_tmp->bits();
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float diff = x2 - x1;
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float a = (y2 - y1) / diff;
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for(int i = x1; i <= x2; i++){
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int x = i;
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y = a * (i - x1) + y1;
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float a = diff != 0 ? (y2 - y1) / diff : FLT_MAX;
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QColor color(255, 255, 255, 255);
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Rysuj(ptr, szer, wys, x, y);
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// Ustawiamy kolor kliknietego piksela na bialy lub czarny
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// ptr[szer*4*y + 4*x] = kolor;
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// ptr[szer*4*y + 4*x + 1] = kolor;
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// ptr[szer*4*y + 4*x + 2] = kolor;
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// ptr[szer*4*y + 4*x + 3] = 255;
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if(abs(a) < 0.5f){
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for(int x = x1; x <= x2; x++){
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int x_form = x - x1;
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int y = a * x_form + y1;
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DrawPixel(ptr, szer, wys, color, x, y);
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}
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}
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else{
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if(y1 > y2){
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std::swap(x1, x2);
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std::swap(y1, y2);
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}
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float diff = x2 - x1;
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float a = diff != 0 ? (y2 - y1) / diff : FLT_MAX;
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for(int y = y1; y <= y2; y++){
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int y_form = y - y1;
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int x = ((float)(y_form) / a) + x1;
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DrawPixel(ptr, szer, wys, color, x, y);
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}
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}
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}
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@ -252,13 +273,15 @@ void MyWindow::DrawCircle(int x1, int y1, int x2, int y2){
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float R = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
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int q_last_x = R / sqrt(2) + 1;
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QColor color(255, 255, 255, 255);
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for(int x = 0; x <= q_last_x; x++){
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float y = sqrt(pow(R, 2) - pow(x, 2));
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for(int k = 0; k < 2; k++){
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for(int i = 0; i < 2; i++){
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for(int j = 0; j < 2; j++){
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Rysuj(ptr, szer, wys, x1 + x, y1 - y);
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DrawPixel(ptr, szer, wys, color, x1 + x, y1 - y);
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y *= -1;
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}
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x *= -1;
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@ -275,20 +298,14 @@ void MyWindow::DrawEllipse(int x1, int y1, int x2, int y2){
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UpdateTempImage();
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int point_count = 60;
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unsigned char *ptr;
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ptr = img_tmp->bits();
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float last_x = 0;
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float last_y = 0;
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float Rx = abs(x2 - x1);
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float Ry = abs(y2 - y1);
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for(int i = 0; i < point_count; i++){
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double angle = 2.0 * PI * (float(i) / point_count);
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for(int i = 0; i <= segment_count; i++){
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double angle = 2.0 * PI * (float(i) / segment_count);
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float x = sin(angle) * Rx;
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float y = cos(angle) * Ry;
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@ -28,6 +28,8 @@
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// klikniecia, ruch myszka itp.
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#include <QMouseEvent>
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enum Mode {Ellipse, Circle, Other};
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namespace Ui {
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class MyWindow;
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}
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@ -59,6 +61,8 @@ private:
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// Do poszczegolnych elementow GUI odwolujemy sie za pomoca zmiennej "ui"
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Ui::MyWindow *ui;
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Mode mode;
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// Pole przechowujace obrazek
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QImage *img;
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// Pole przechowujace obrazek
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@ -74,6 +78,7 @@ private:
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int poczY;
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int startX, startY;
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bool draw_finished;
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int segment_count;
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// Deklaracje funkcji
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@ -93,6 +98,7 @@ private:
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private slots:
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void on_cleanButton_clicked();
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void on_exitButton_clicked();
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void on_segmentSlider_valueChanged(int val);
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void mousePressEvent(QMouseEvent *event);
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void mouseMoveEvent(QMouseEvent *event);
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void mouseReleaseEvent(QMouseEvent *event);
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@ -42,11 +42,11 @@
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<x>630</x>
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<y>10</y>
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<width>241</width>
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<height>191</height>
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<height>271</height>
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</rect>
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</property>
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<property name="title">
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<string>Wypełnianie</string>
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<string>Opcje</string>
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</property>
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<widget class="QPushButton" name="cleanButton">
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<property name="geometry">
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@ -74,6 +74,70 @@
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<string>Wyjście</string>
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</property>
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</widget>
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<widget class="QSlider" name="segmentSlider">
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<property name="geometry">
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<rect>
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<x>10</x>
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<y>150</y>
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<width>221</width>
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<height>20</height>
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</rect>
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</property>
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<property name="minimum">
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<number>4</number>
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</property>
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<property name="maximum">
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<number>100</number>
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</property>
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<property name="value">
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<number>10</number>
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</property>
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<property name="tickPosition">
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<enum>QSlider::TicksAbove</enum>
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</property>
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<property name="tickInterval">
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<number>10</number>
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</property>
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</widget>
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<widget class="QLabel" name="segmentLabel">
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<property name="geometry">
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<rect>
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<x>10</x>
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<y>120</y>
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<width>131</width>
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<height>20</height>
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</rect>
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</property>
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<property name="text">
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<string>TextLabel</string>
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</property>
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</widget>
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<widget class="QLabel" name="label">
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<property name="geometry">
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<rect>
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<x>10</x>
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<y>186</y>
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<width>221</width>
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<height>71</height>
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</rect>
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</property>
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<property name="text">
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<string>Przytrzymaj lewy przycisk myszy by utworzyć okrąg.
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Przytrzymaj prawy przycisk myszy by utworzyć elipse.</string>
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</property>
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<property name="textFormat">
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<enum>Qt::PlainText</enum>
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</property>
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<property name="scaledContents">
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<bool>false</bool>
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</property>
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<property name="wordWrap">
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<bool>true</bool>
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</property>
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</widget>
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</widget>
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</widget>
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<widget class="QMenuBar" name="menuBar">
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