From b52138db4c8e86c6d365c8cc90ebfdb7070ce259 Mon Sep 17 00:00:00 2001
From: Andrew Guschin <saintruler@gmail.com>
Date: Tue, 10 Nov 2020 00:48:10 +0300
Subject: =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8=D0=BB=20=D0=BE?=
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---
 task05/Guschin/MyForm.h | 42 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

(limited to 'task05')

diff --git a/task05/Guschin/MyForm.h b/task05/Guschin/MyForm.h
index de6955a..de76ae6 100644
--- a/task05/Guschin/MyForm.h
+++ b/task05/Guschin/MyForm.h
@@ -10,6 +10,9 @@ namespace Guschin {
 	using namespace System::Drawing;
 	using namespace std;
 
+	vec2 Vc;
+	vec2 V;
+	vec2 Vc_work, V_work;
 	mat3 T;
 	mat3 initT;
 
@@ -70,6 +73,15 @@ namespace Guschin {
 			Wx = maxX - left;
 			Wy = maxY - top;
 		}
+		System::Void worldRectCalc()
+		{
+			Vc_work = normalize(T * vec3(Vc, 1.f));
+			V_work = mat2(T) * V;
+		}
+		float f(float x)
+		{
+			return x * sin(x);
+		}
 	private: 
 		System::Void MyForm_Resize(System::Object^ sender, System::EventArgs^ e) {
 			rectCalc();
@@ -82,12 +94,40 @@ namespace Guschin {
 
 			Pen^ rectPen = gcnew Pen(Color::Black, 2);
 			g->DrawRectangle(rectPen, left, top, Wx, Wy);
+
+			Pen^ pen = gcnew Pen(Color::Blue, 1);
+			float deltaX = V_work.x / Wx;
+			vec2 start;
+			float x, y;
+			start.x = Wcx;
+			x = Vc_work.x;
+			y = f(x);
+			start.y = Wcy - (y - Vc_work.y) / V_work.y * Wy;
+
+			while (start.x < maxX)
+			{
+				vec2 end;
+				end.x = start.x + 1.f;
+				x += deltaX;
+				y = f(x);
+				end.y = Wcy - (y - Vc_work.y) / V_work.y * Wy;
+
+				vec2 tmpEnd = end;
+				bool visible = clip(start, end, minX, minY, maxX, maxY);
+				if (visible) {
+					g->DrawLine(pen, start.x, start.y, end.x, end.y);
+				}
+				start = tmpEnd;
+			}
 		}
 	private:
 		System::Void MyForm_Load(System::Object^  sender, System::EventArgs^  e) {
-			rectCalc();
 			initT = mat3(1.f);
 			T = initT;
+			Vc = vec2(-2.f, -2.f);
+			V = vec2(4.f, 4.f);
+			rectCalc();
+			worldRectCalc();
 		}
 	private:
 		System::Void MyForm_KeyDown(System::Object^ sender, System::Windows::Forms::KeyEventArgs^ e) {
-- 
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