public static void DrawCylinder(FloatPoint3 center, float topHorizontalRadius, float topVerticalRadius, float bottomHorizontalRadius, float bottomVerticalRadius, float height, Color?fillColor = null, Color?borderColor = null)
{
var segments = 360;
var topPoints = new float[segments * 2];
var bottomPoints = new float[segments * 2];
var arrayLength = topPoints.Length;
var count = 0;
for (var angle = 0f; angle < 360; angle += segments / 360f)
{
topPoints[count] = (float)(center.X + Math.Cos(Math.PI / 180f * angle) * topHorizontalRadius);
topPoints[count + 1] = (float)(center.Z + Math.Sin(Math.PI / 180f * angle) * topVerticalRadius);
bottomPoints[count] = (float)(center.X + Math.Cos(Math.PI / 180f * angle) * bottomHorizontalRadius);
bottomPoints[count + 1] = (float)(center.Z + Math.Sin(Math.PI / 180f * angle) * bottomVerticalRadius);
count += 2;
}
DrawCylinderBase(center - (0f, height / 2, 0f), bottomPoints, fillColor, borderColor);
DrawCylinderBase(center + (0f, height / 2, 0f), topPoints, fillColor, borderColor);
GL.Begin(PrimitiveType.Quads);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
for (var i = 0; i < arrayLength / 2 - 1; i++)
{
GL.Vertex3(topPoints[i * 2], center.Y + height / 2, topPoints[i * 2 + 1]);
GL.Vertex3(bottomPoints[i * 2], center.Y - height / 2, bottomPoints[i * 2 + 1]);
GL.Vertex3(bottomPoints[i * 2 + 2], center.Y - height / 2, bottomPoints[i * 2 + 3]);
GL.Vertex3(topPoints[i * 2 + 2], center.Y + height / 2, topPoints[i * 2 + 3]);
}
GL.Vertex3(topPoints[0], center.Y + height / 2, topPoints[1]);
GL.Vertex3(bottomPoints[0], center.Y - height / 2, bottomPoints[1]);
GL.Vertex3(bottomPoints[arrayLength - 2], center.Y - height / 2, bottomPoints[arrayLength - 1]);
GL.Vertex3(topPoints[arrayLength - 2], center.Y + height / 2, topPoints[arrayLength - 1]);
GL.End();
}
public static void DrawCylinder(FloatPoint3 center, float radius, float height, Color?fillColor = null, Color?borderColor = null)
{
var segments = 360;
var points = new float[segments * 2];
var count = 0;
for (var angle = 0f; angle < 360; angle += segments / 360f)
{
points[count++] = (float)(center.X + Math.Cos(Math.PI / 180f * angle) * radius);
points[count++] = (float)(center.Z + Math.Sin(Math.PI / 180f * angle) * radius);
}
DrawCylinderBase(center - (0f, height / 2, 0f), points, fillColor, borderColor);
DrawCylinderBase(center + (0f, height / 2, 0f), points, fillColor, borderColor);
GL.Begin(PrimitiveType.Quads);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
for (var i = 0; i < points.Length / 2 - 1; i++)
{
GL.Vertex3(points[i * 2], center.Y + height / 2, points[i * 2 + 1]);
GL.Vertex3(points[i * 2], center.Y - height / 2, points[i * 2 + 1]);
GL.Vertex3(points[i * 2 + 2], center.Y - height / 2, points[i * 2 + 3]);
GL.Vertex3(points[i * 2 + 2], center.Y + height / 2, points[i * 2 + 3]);
}
GL.Vertex3(points[0], center.Y + height / 2, points[1]);
GL.Vertex3(points[0], center.Y - height / 2, points[1]);
GL.Vertex3(points[points.Length - 2], center.Y - height / 2, points[points.Length - 1]);
GL.Vertex3(points[points.Length - 2], center.Y + height / 2, points[points.Length - 1]);
GL.End();
}
private static void DrawCylinderBase(FloatPoint3 center, float[] points, Color?fillColor = null, Color?borderColor = null)
{
GL.Begin(PrimitiveType.TriangleFan);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
GL.Vertex3(center.X, center.Y, center.Z);
for (var i = 0; i < points.Length / 2; i++)
{
GL.Vertex3(points[i * 2], center.Y, points[i * 2 + 1]);
}
GL.Vertex3(points[0], center.Y, points[1]);
GL.End();
GL.Begin(PrimitiveType.LineLoop);
GL.Color4(borderColor == null ? Settings.Drawing.BorderColor : (Color)borderColor);
for (var i = 0; i < points.Length / 2; i++)
{
GL.Vertex3(points[i * 2], center.Y, points[i * 2 + 1]);
}
GL.End();
}
public static void DrawPyramid(FloatPoint3 center, float baseWidth, float baseHeight, float pyramidHeight, Color?fillColor = null, Color?borderColor = null)
{
GL.Begin(PrimitiveType.Quads);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.End();
GL.Begin(PrimitiveType.TriangleFan);
GL.Vertex3(center.X, center.Y + pyramidHeight / 2, center.Z);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.End();
GL.Begin(PrimitiveType.LineLoop);
GL.Color4(borderColor == null ? Settings.Drawing.BorderColor : (Color)borderColor);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.End();
GL.Begin(PrimitiveType.Lines);
GL.Vertex3(center.X, center.Y + pyramidHeight / 2, center.Z);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.Vertex3(center.X, center.Y + pyramidHeight / 2, center.Z);
GL.Vertex3(center.X - baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X, center.Y + pyramidHeight / 2, center.Z);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z - baseHeight / 2);
GL.Vertex3(center.X, center.Y + pyramidHeight / 2, center.Z);
GL.Vertex3(center.X + baseWidth / 2, center.Y - pyramidHeight / 2, center.Z + baseHeight / 2);
GL.End();
}
public static void DrawSphere(FloatPoint3 center, float radius, Color?fillColor = null, Color?normalColor = null)
{
int nx = 64, ny = 64;
int ix, iy;
double x, y, z, sy, cy, sy1, cy1, sx, cx, piy, pix, ay, ay1, ax, ty, dnx, dny, diy;
dnx = 1.0 / (double)nx;
dny = 1.0 / (double)ny;
// Рисуем полигональную модель сферы, формируем нормали и задаем коодинаты текстуры
// Каждый полигон - это трапеция. Трапеции верхнего и нижнего слоев вырождаются в треугольники
GL.Begin(PrimitiveType.QuadStrip);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
piy = Math.PI * dny;
pix = Math.PI * dnx;
for (iy = 0; iy < ny; iy++)
{
diy = (double)iy;
ay = diy * piy;
sy = Math.Sin(ay);
cy = Math.Cos(ay);
ty = diy * dny;
ay1 = ay + piy;
sy1 = Math.Sin(ay1);
cy1 = Math.Cos(ay1);
for (ix = 0; ix <= nx; ix++)
{
ax = 2.0 * ix * pix;
sx = Math.Sin(ax);
cx = Math.Cos(ax);
x = center.X + radius * sy * cx;
y = center.Y + radius * sy * sx;
z = center.Z + radius * cy;
// Координаты нормали в текущей вершине
GL.Normal3(x, y, z); // Нормаль направлена от центра
GL.Vertex3(x, y, z);
x = center.X + radius * sy1 * cx;
y = center.Y + radius * sy1 * sx;
z = center.Z + radius * cy1;
GL.Normal3(x, y, z);
GL.Vertex3(x, y, z);
}
}
GL.End();
if (Window.ShowNormals)
{
double rv = 1.15 * radius;
// Толщина линии, отображающей нормаль
GL.LineWidth(1);
GL.Color4(normalColor == null ? Settings.Drawing.NormalColor : (Color)normalColor);
GL.Begin(PrimitiveType.Lines);
piy = Math.PI * dny;
pix = Math.PI * dnx;
for (iy = 0; iy < ny; iy++)
{
diy = (double)iy;
ay = diy * piy;
sy = Math.Sin(ay);
cy = Math.Cos(ay);
for (ix = 0; ix <= nx; ix++)
{
ax = 2.0 * ix * pix;
sx = Math.Sin(ax);
cx = Math.Cos(ax);
x = center.X + radius * sy * cx;
y = center.Y + radius * sy * sx;
z = center.Z + radius * cy;
GL.Vertex3(x, y, z);
x = center.X + rv * sy * cx;
y = center.Y + rv * sy * sx;
z = center.Z + rv * cy;
GL.Vertex3(x, y, z);
}
}
GL.End();
GL.LineWidth(1);
GL.Color4(Color.LightGray);
}
}
public static void DrawParallelepiped(FloatPoint3 firstPoint, FloatPoint3 secondPoint, Color?fillColor = null, Color?borderColor = null)
{
GL.Begin(PrimitiveType.Quads);
GL.Color4(fillColor == null ? Settings.Drawing.FillColor : (Color)fillColor);
//front
GL.Vertex3(firstPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, firstPoint.Z);
//back
GL.Vertex3(secondPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, secondPoint.Z);
//top
GL.Vertex3(firstPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, firstPoint.Z);
//bottom
GL.Vertex3(firstPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, firstPoint.Z);
//right
GL.Vertex3(secondPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, secondPoint.Z);
//left
GL.Vertex3(firstPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, firstPoint.Z);
GL.End();
GL.Color4(borderColor == null ? Settings.Drawing.BorderColor : (Color)borderColor);
GL.Begin(PrimitiveType.LineLoop);
GL.Vertex3(firstPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, firstPoint.Z);
GL.End();
GL.Begin(PrimitiveType.LineLoop);
GL.Vertex3(firstPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, secondPoint.Z);
GL.End();
GL.Begin(PrimitiveType.Lines);
GL.Vertex3(firstPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, firstPoint.Y, secondPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(firstPoint.X, secondPoint.Y, secondPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, firstPoint.Z);
GL.Vertex3(secondPoint.X, secondPoint.Y, secondPoint.Z);
GL.End();
}
