116 lines
3.4 KiB
C#
116 lines
3.4 KiB
C#
using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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namespace Cuboid
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{
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public partial class Form1 : Form
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{
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double[][] nodes = {
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new double[] {-1, -1, -1}, new double[] {-1, -1, 1}, new double[] {-1, 1, -1},
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new double[] {-1, 1, 1}, new double[] {1, -1, -1}, new double[] {1, -1, 1},
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new double[] {1, 1, -1}, new double[] {1, 1, 1} };
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int[][] edges = {
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new int[] {0, 1}, new int[] {1, 3}, new int[] {3, 2}, new int[] {2, 0}, new int[] {4, 5},
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new int[] {5, 7}, new int[] {7, 6}, new int[] {6, 4}, new int[] {0, 4}, new int[] {1, 5},
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new int[] {2, 6}, new int[] {3, 7}};
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private int mouseX;
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private int prevMouseX;
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private int prevMouseY;
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private int mouseY;
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public Form1()
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{
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Width = Height = 640;
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StartPosition = FormStartPosition.CenterScreen;
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SetStyle(
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ControlStyles.AllPaintingInWmPaint |
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ControlStyles.UserPaint |
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ControlStyles.DoubleBuffer,
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true);
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MouseMove += (s, e) =>
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{
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prevMouseX = mouseX;
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prevMouseY = mouseY;
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mouseX = e.X;
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mouseY = e.Y;
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double incrX = (mouseX - prevMouseX) * 0.01;
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double incrY = (mouseY - prevMouseY) * 0.01;
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RotateCuboid(incrX, incrY);
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Refresh();
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};
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MouseDown += (s, e) =>
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{
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mouseX = e.X;
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mouseY = e.Y;
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};
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Scale(80, 120, 160);
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RotateCuboid(Math.PI / 5, Math.PI / 9);
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}
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private void RotateCuboid(double angleX, double angleY)
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{
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double sinX = Math.Sin(angleX);
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double cosX = Math.Cos(angleX);
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double sinY = Math.Sin(angleY);
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double cosY = Math.Cos(angleY);
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foreach (var node in nodes)
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{
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double x = node[0];
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double y = node[1];
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double z = node[2];
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node[0] = x * cosX - z * sinX;
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node[2] = z * cosX + x * sinX;
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z = node[2];
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node[1] = y * cosY - z * sinY;
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node[2] = z * cosY + y * sinY;
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}
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}
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private void Scale(int v1, int v2, int v3)
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{
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foreach (var item in nodes)
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{
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item[0] *= v1;
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item[1] *= v2;
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item[2] *= v3;
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}
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}
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protected override void OnPaint(PaintEventArgs args)
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{
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var g = args.Graphics;
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g.SmoothingMode = SmoothingMode.HighQuality;
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g.Clear(Color.White);
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g.TranslateTransform(Width / 2, Height / 2);
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foreach (var edge in edges)
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{
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double[] xy1 = nodes[edge[0]];
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double[] xy2 = nodes[edge[1]];
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g.DrawLine(Pens.Black, (int)Math.Round(xy1[0]), (int)Math.Round(xy1[1]),
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(int)Math.Round(xy2[0]), (int)Math.Round(xy2[1]));
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}
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foreach (var node in nodes)
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{
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g.FillEllipse(Brushes.Black, (int)Math.Round(node[0]) - 4,
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(int)Math.Round(node[1]) - 4, 8, 8);
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}
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}
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}
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}
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