/// <summary>
/// Draws a line with rounded ends.
/// </summary>
/// <param name="x1">The X position of the first point.</param>
/// <param name="y1">The Y position of the first point.</param>
/// <param name="x2">The X position of the second point.</param>
/// <param name="y2">The Y position of the second point.</param>
/// <param name="color">The color of the line.</param>
/// <param name="thickness">The thickness of the line.</param>
static public void RoundedLine(float x1, float y1, float x2, float y2, Color color, float thickness) {
VertexArray vertices = new VertexArray(PrimitiveType.TrianglesFan);
int rotationSteps = 10;
var line = new Vector2(x2 - x1, y2 - y1);
var normalUp = new Vector2(y1 - y2, x2 - x1);
var normalDown = new Vector2(y2 - y1, x1 - x2);
normalUp.Normalize(thickness * 0.5f);
normalDown.Normalize(thickness * 0.5f);
var nextPoint = new Vector2();
float vx, vy;
vx = x1;
vy = y1;
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x1 + normalUp.X);
vy = (float)(y1 + normalUp.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
nextPoint.X = normalUp.X;
nextPoint.Y = normalUp.Y;
for (int i = 0; i < rotationSteps; i++) {
nextPoint = Util.Rotate(nextPoint, -180 / rotationSteps);
vx = (float)(x1 + nextPoint.X);
vy = (float)(y1 + nextPoint.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
}
vx = (float)(x1 + normalDown.X);
vy = (float)(y1 + normalDown.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x2 + normalDown.X);
vy = (float)(y2 + normalDown.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
for (int i = 0; i < rotationSteps; i++) {
nextPoint = Util.Rotate(nextPoint, -180 / rotationSteps);
vx = (float)(x2 + nextPoint.X);
vy = (float)(y2 + nextPoint.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
}
vx = (float)(x2 + normalUp.X);
vy = (float)(y2 + normalUp.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x1 + normalUp.X);
vy = (float)(y1 + normalUp.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
Drawable(vertices, RenderStates.Default);
}
/// <summary>
/// Draws a line with a thickness using a quad.
/// </summary>
/// <param name="x1">The X position of the first point.</param>
/// <param name="y1">The Y position of the first point.</param>
/// <param name="x2">The X position of the second point.</param>
/// <param name="y2">The Y position of the second point.</param>
/// <param name="color">The color of the line.</param>
/// <param name="thickness">The thickness of the line.</param>
static public void Line(float x1, float y1, float x2, float y2, Color color, float thickness) {
VertexArray vertices = new VertexArray(PrimitiveType.Quads);
var line = new Vector2(x2 - x1, y2 - y1);
var normalUp = new Vector2(y1 - y2, x2 - x1);
var normalDown = new Vector2(y2 - y1, x1 - x2);
normalUp.Normalize(thickness * 0.5f);
normalDown.Normalize(thickness * 0.5f);
float vx, vy;
vx = (float)(x1 + normalUp.X);
vy = (float)(y1 + normalUp.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x1 + normalDown.X);
vy = (float)(y1 + normalDown.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x2 + normalDown.X);
vy = (float)(y2 + normalDown.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
vx = (float)(x2 + normalUp.X);
vy = (float)(y2 + normalUp.Y);
vertices.Append(new Vertex(new Vector2f(vx, vy), color.SFMLColor));
Drawable(vertices, RenderStates.Default);
}
