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необходимо при нажатии кнопки вывести в случайном месте астроиду случайным цветом. есть программа, которая квадрат генерирует. и есть код как строить астройду. наверное надо использовать DrawClosedCurve - Рисование замкнутой кривой по массиву точек строит квадраты | Код |
#pragma once
#include "Shape.h";
namespace paint_4 {
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
public ref class Form1 : public System::Windows::Forms::Form
{
public:
ArrayList^ shapes;
Bitmap ^buffer;
Graphics ^buffergr;
int mX, mY;
private: System::Windows::Forms::Button^ btnAdd;
public:
public:
Form1(void)
{
InitializeComponent();
//
//TODO: добавьте код конструктора
//
shapes = gcnew ArrayList();
SetStyle(ControlStyles::Opaque, true);
Form1_Resize(nullptr, EventArgs::Empty);
}
protected:
~Form1()
{
if (components)
{
delete components;
}
}
private:
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
void InitializeComponent(void)
{
this->btnAdd = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// btnAdd
//
this->btnAdd->Location = System::Drawing::Point(13, 13);
this->btnAdd->Name = L"btnAdd";
this->btnAdd->Size = System::Drawing::Size(111, 23);
this->btnAdd->TabIndex = 0;
this->btnAdd->Text = L"Add";
this->btnAdd->UseVisualStyleBackColor = true;
this->btnAdd->Click += gcnew System::EventHandler(this, &Form1::btnAdd_Click);
//
// Form1
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(284, 262);
this->Controls->Add(this->btnAdd);
this->Name = L"Form1";
this->Text = L"Form1";
this->MouseUp += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::Form1_MouseUp);
this->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &Form1::Form1_Paint);
this->MouseDown += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::Form1_MouseDown);
this->Resize += gcnew System::EventHandler(this, &Form1::Form1_Resize);
this->MouseMove += gcnew System::Windows::Forms::MouseEventHandler(this, &Form1::Form1_MouseMove);
this->ResumeLayout(false);
}
#pragma endregion
private: System::Void Form1_Resize(System::Object^ sender, System::EventArgs^ e) {
if (buffer != nullptr) delete buffer;
if (buffergr != nullptr) delete buffergr;
if (Width > 0 && Height > 0)
{
buffer = gcnew Bitmap(Width, Height);
buffergr = Graphics::FromImage(buffer);
}
}
private: System::Void Form1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) {
Shape ^s;
buffergr->Clear(BackColor);
for (int i = 0; i < shapes->Count; i++) {
s = (Shape^)shapes[i];
s->Paint(buffergr, i+1);
}
e->Graphics->DrawImageUnscaled(buffer, 0, 0);
}
private: System::Void btnAdd_Click(System::Object^ sender, System::EventArgs^ e) {
Shape^ sh;
Random ^r = gcnew Random();
Drawing::Color c = Drawing::Color::FromArgb(255, r->Next(0, 255), r->Next(0, 255), r->Next(0, 255));
sh = gcnew Shape(r->Next(0, Width-150), r->Next(0, Height-150), 150, 150, c);
shapes->Add(sh);
Invalidate();
}
private: System::Void Form1_MouseDown(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {
Shape ^s;
for (int i = shapes->Count-1; i >= 0 ; i--) {
s = (Shape^)shapes[i];
if (s->r.Contains(e->X, e->Y)) {
if (e->Button == Windows::Forms::MouseButtons::Left)
s->Selected = true;
else
if (e->Button == Windows::Forms::MouseButtons::Right) {
shapes->Remove(s);
delete s;
}
break;
}
}
mX = e->X;
mY = e->Y;
Invalidate();
}
private: System::Void Form1_MouseUp(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {
Shape ^s;
for (int i = 0; i < shapes->Count; i++) {
s = (Shape^)shapes[i];
s->Selected = false;
}
Invalidate();
}
private: System::Void Form1_MouseMove(System::Object^ sender, System::Windows::Forms::MouseEventArgs^ e) {
Shape ^s;
for (int i = shapes->Count-1; i >= 0 ; i--) {
s = (Shape^)shapes[i];
if (s->Selected) {
s->r.X += e->X - mX;
s->r.Y += e->Y - mY;
Invalidate();
break;
}
}
mX = e->X;
mY = e->Y;
}
};
}
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вот код астройды. | Код |
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
System::Drawing::Pen^ myPen = gcnew System::Drawing::Pen(System::Drawing::Color::DarkSlateBlue);
System::Drawing::Graphics^ formGraphics;
formGraphics = this->CreateGraphics();
{
formGraphics->DrawString("y", gcnew Drawing::Font("Arial", 16), Brushes::Black, 508, 20);
formGraphics->DrawString("x", gcnew Drawing::Font("Arial", 16), Brushes::Black, 780, 270);
float x;
float y;
float b;
float t;
b = Single::Parse(mtb->Text); //введённое число (размер астройды)
for (float i=0;i<(200*3.14);i++)
{
System::Drawing::Pen^ myPen1 = gcnew System::Drawing::Pen(System::Drawing::Color::Red);
t=(i)/100;
x=((b*cos(t)*cos(t)*cos(t)));
y=((b*sin(t)*sin(t)*sin(t)));
formGraphics->DrawLine(myPen1, x+500,y+280, x+501, y+279);
}
}
}
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рисование астроиды (VC++ windows form apllication), VC++ windows form apllication) 
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