cloud shapes added

mainwindow.cpp

@@ -92,6 +92,20 @@ void MainWindow::on_btnStarfish_clicked()
 	UpdateUi();
 }
 
+void MainWindow::on_btnCloud_clicked()
+{
+	this->ui->renderArea->setShape(RenderArea::Cloud1);
+	this->ui->renderArea->repaint();
+	UpdateUi();
+}
+
+void MainWindow::on_btnInverseCloud_clicked()
+{
+	this->ui->renderArea->setShape(RenderArea::Cloud2);
+	this->ui->renderArea->repaint();
+	UpdateUi();
+}
+
 void MainWindow::on_intervalInput_valueChanged(double interval)
 {
 	this->ui->renderArea->setInternalLenght(interval);

mainwindow.h

@@ -47,6 +47,10 @@ class MainWindow : public QMainWindow
 
 		void on_btnStarfish_clicked();
 
+		void on_btnCloud_clicked();
+
+		void on_btnInverseCloud_clicked();
+
 	private:
 		void UpdateUi();
 		constexpr static QWidget* root = 0;

mainwindow.ui

@@ -413,6 +413,30 @@ border-color: rgb(255, 255, 255);</string>
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="QPushButton" name="btnCloud">
+        <property name="styleSheet">
+         <string notr="true">color: rgb(255, 255, 255);
+background-color: rgb(36, 35, 35);
+border-color: rgb(255, 255, 255);</string>
+        </property>
+        <property name="text">
+         <string>Cloud</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="btnInverseCloud">
+        <property name="styleSheet">
+         <string notr="true">color: rgb(255, 255, 255);
+background-color: rgb(36, 35, 35);
+border-color: rgb(255, 255, 255);</string>
+        </property>
+        <property name="text">
+         <string>Inverse Cloud</string>
+        </property>
+       </widget>
+      </item>
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout_3">
         <item>

renderarea.cpp

@@ -121,6 +121,25 @@ QPointF RenderArea::ComputeStarfish(double t)
 	};
 }
 
+QPointF RenderArea::ComputeCloud2(double t)
+{
+	return ComputeCloudWithSign(t,1.);
+}
+
+QPointF RenderArea::ComputeCloud1(double t)
+{
+	return ComputeCloudWithSign(t,-1.);
+}
+
+QPointF RenderArea::ComputeCloudWithSign(double t,double sign)
+{
+	double a{14},b{1};
+	return QPointF{
+		(a+b)*cos(t*(b/a)) + sign*b*cos(t*((a+b)/a)),
+				(a+b)*sin(t*(b/a)) - b*sin(t*((a+b)/a))
+	};
+}
+
 void RenderArea::OnShapeChanged()
 {
 	switch (mShape) {
@@ -169,6 +188,16 @@ void RenderArea::OnShapeChanged()
 			mIntervalLenght=6*M_PI;
 			mStepCount=256;
 		break;
+		case Cloud1:
+			mScale=10;
+			mIntervalLenght=28*M_PI;
+			mStepCount=128;
+		break;
+		case Cloud2:
+			mScale=10;
+			mIntervalLenght=28*M_PI;
+			mStepCount=128;
+		break;
 		default:
 		break;
 	}
@@ -204,6 +233,12 @@ QPointF RenderArea::Compute(double t)
 		case Starfish:
 			return ComputeStarfish(t);
 		break;
+		case Cloud1:
+			return ComputeCloud1(t);
+		break;
+		case Cloud2:
+			return ComputeCloud2(t);
+		break;
 		default:
 		break;
 	}

renderarea.h

@@ -22,7 +22,9 @@ class RenderArea : public QWidget
 			Circle,
 			Ellipse,
 			Fancy,
-			Starfish
+			Starfish,
+			Cloud1,
+			Cloud2
 		};
 
 		void setBackgroundColor(QColor color) { mBackgroundColour = color; }
@@ -62,6 +64,9 @@ class RenderArea : public QWidget
 		QPointF ComputeEllipse(double t);
 		QPointF ComputeFancy(double t);
 		QPointF ComputeStarfish(double t);
+		QPointF ComputeCloud1(double t);
+		QPointF ComputeCloud2(double t);
+		QPointF ComputeCloudWithSign(double t,double sign);
 		QColor mBackgroundColour;
 		ShapesType mShape;
 		QPen mPen;