public static Shape CreateFilledCircle(Vector3 origin, float border_radius, float border_width, float border_origin_radians, Vector4 uv)
{
int numSegments = segmentsForSmoothCircle(border_radius);
float radiansPerPoint = (Math.PI * 2) / numSegments;
Vector3[] pointsOutside = new Vector3[numSegments + 1], pointsInside = new Vector3[numSegments + 1];
// really, we only need to generate numPoints, but generating the final point (which is equal to the first point
// saves us a mod operation in the next for loop.
for (int i = 0; i < numSegments + 1; i++)
{
pointsOutside[i] = new Vector3(
origin.X + Math.Cos(radiansPerPoint * i + border_origin_radians) * (border_radius),
origin.Y + Math.Sin(radiansPerPoint * i + border_origin_radians) * (border_radius),
origin.Z);
pointsInside[i] = new Vector3(
origin.X + Math.Cos(radiansPerPoint * i + border_origin_radians) * (border_radius - border_width),
origin.Y + Math.Sin(radiansPerPoint * i + border_origin_radians) * (border_radius - border_width),
origin.Z);
}
VertexPositionTextureHueExtra[] vertices = new VertexPositionTextureHueExtra[(numSegments) * 4];
for (int i = 0; i < numSegments; i++)
{
int i4 = i * 4;
int i6 = i * 6;
vertices[i4 + 0] = new VertexPositionTextureHueExtra(pointsOutside[i + 0], new Vector2(uv.X, uv.Y));
vertices[i4 + 1] = new VertexPositionTextureHueExtra(pointsOutside[i + 1], new Vector2(uv.Z, uv.Y));
vertices[i4 + 2] = new VertexPositionTextureHueExtra(pointsInside[i + 0], new Vector2(uv.X, uv.W));
vertices[i4 + 3] = new VertexPositionTextureHueExtra(pointsInside[i + 1], new Vector2(uv.Z, uv.W));
}
Shape shape = new Shape();
shape.Vertices = vertices;
return shape;
}
public void DrawShape(Shape shape, Texture2D texture)
{
List<VertexPositionTextureHueExtra> vertexList = InternalGetVertexList();
for (int i = 0; i < shape.Vertices.Length; i++)
{
shape.Vertices[i].Position.Z = m_zOffset;
vertexList.Add(shape.Vertices[i]);
}
m_DrawCommands.Add(new TextureAndVertexList(texture, vertexList));
// increment the z offset
m_zOffset++;
}
/// <summary>
/// Creates a circle shape with a designated border width. The circle begins and ends at border_origin_radians.
/// </summary>
public static Shape CreateBorderedCircle(Vector3 origin, float radius, float border_width, float border_origin_radians, Vector4 uv, BorderStyle style, Color? hue = null)
{
float inner_delta = 0f, outer_delta = 0f;
switch (style)
{
case BorderStyle.Centered:
inner_delta = outer_delta = border_width / 2f;
break;
case BorderStyle.Inside:
inner_delta = border_width;
break;
case BorderStyle.Outside:
outer_delta = border_width;
break;
}
int numSegments = segmentsForSmoothCircle(radius);
float radiansPerPoint = (Math.PI * 2) / numSegments;
Vector3[] pointsOutside = new Vector3[numSegments + 1], pointsInside = new Vector3[numSegments + 1];
// really, we only need to generate numPoints, but generating the final point (which is equal to the first point
// saves us a mod operation in the next for loop.
for (int i = 0; i < numSegments + 1; i++)
{
pointsOutside[i] = new Vector3(
origin.X + Math.Cos(radiansPerPoint * i + border_origin_radians) * (radius + outer_delta),
origin.Y + Math.Sin(radiansPerPoint * i + border_origin_radians) * (radius + outer_delta),
origin.Z);
pointsInside[i] = new Vector3(
origin.X + Math.Cos(radiansPerPoint * i + border_origin_radians) * (radius - inner_delta),
origin.Y + Math.Sin(radiansPerPoint * i + border_origin_radians) * (radius - inner_delta),
origin.Z);
}
VertexPositionTextureHueExtra[] vertices = new VertexPositionTextureHueExtra[(numSegments) * 4];
Color color = (hue.HasValue) ? hue.Value : Color.White;
for (int i = 0; i < numSegments; i++)
{
int i4 = i * 4;
int i6 = i * 6;
vertices[i4 + 0] = new VertexPositionTextureHueExtra(pointsOutside[i + 0], new Vector2(uv.X, uv.Y), color, Vector4.Zero);
vertices[i4 + 1] = new VertexPositionTextureHueExtra(pointsOutside[i + 1], new Vector2(uv.Z, uv.Y), color, Vector4.Zero);
vertices[i4 + 2] = new VertexPositionTextureHueExtra(pointsInside[i + 0], new Vector2(uv.X, uv.W), color, Vector4.Zero);
vertices[i4 + 3] = new VertexPositionTextureHueExtra(pointsInside[i + 1], new Vector2(uv.Z, uv.W), color, Vector4.Zero);
}
Shape shape = new Shape();
shape.Vertices = vertices;
return shape;
}
public static Shape CreateVector(Vector3 v0, Vector3 v1, float width, Vector4 uv, float cut_short = 0f, Color? hue = null, Vector4? extra = null)
{
Shape shape = new Shape();
Color iHue = (hue == null) ? Color.White : hue.Value;
Vector4 iExtra = (extra == null) ? Vector4.Zero : extra.Value;
Vector3 normalized = Vector3.Normalize((v1 - v0));
Vector3 perpendicular = new Vector3(normalized.Y, -normalized.X, 0) * width;
Vector3 v1shortened = v1 - normalized * cut_short;
shape.Vertices = new VertexPositionTextureHueExtra[]{
new VertexPositionTextureHueExtra(v0 - perpendicular, new Vector2(uv.X, uv.Y), iHue, iExtra), // top left
new VertexPositionTextureHueExtra(v0 + perpendicular, new Vector2(uv.Z, uv.Y), iHue, iExtra), // top right
new VertexPositionTextureHueExtra(v1shortened - perpendicular, new Vector2(uv.X, uv.W), iHue, iExtra), // bottom left
new VertexPositionTextureHueExtra(v1shortened + perpendicular, new Vector2(uv.Z, uv.W), iHue, iExtra), // bottom right
};
return shape;
}
public static Shape CreateQuadCentered(Vector3 origin, float radius, Vector4 uv, float? rotation = null, Color? hue = null, Vector4? extra = null)
{
float iRotation = (rotation == null) ? 0.0f : rotation.Value;
Color iHue = (hue == null) ? Color.White : hue.Value;
Vector4 iExtra = (extra == null) ? Vector4.Zero : extra.Value;
Shape shape = new Shape();
if (iRotation == 0)
{
shape.Vertices = new VertexPositionTextureHueExtra[]{
new VertexPositionTextureHueExtra(origin + new Vector3(-radius, -radius, 0f), new Vector2(uv.X, uv.Y), iHue, iExtra), // top left
new VertexPositionTextureHueExtra(origin + new Vector3(+radius, -radius, 0f), new Vector2(uv.Z, uv.Y), iHue, iExtra), // top right
new VertexPositionTextureHueExtra(origin + new Vector3(-radius, +radius, 0f), new Vector2(uv.X, uv.W), iHue, iExtra), // bottom left
new VertexPositionTextureHueExtra(origin + new Vector3(+radius, +radius, 0f), new Vector2(uv.Z, uv.W), iHue, iExtra), // bottom right
};
}
else
{
shape.Vertices = new VertexPositionTextureHueExtra[]{
new VertexPositionTextureHueExtra(origin + rotateV3(new Vector3(-radius, -radius, 0f), iRotation), new Vector2(uv.X, uv.Y), iHue, iExtra), // top left
new VertexPositionTextureHueExtra(origin + rotateV3(new Vector3(+radius, -radius, 0f), iRotation), new Vector2(uv.Z, uv.Y), iHue, iExtra), // top right
new VertexPositionTextureHueExtra(origin + rotateV3(new Vector3(-radius, +radius, 0f), iRotation), new Vector2(uv.X, uv.W), iHue, iExtra), // bottom left
new VertexPositionTextureHueExtra(origin + rotateV3(new Vector3(+radius, +radius, 0f), iRotation), new Vector2(uv.Z, uv.W), iHue, iExtra), // bottom right
};
}
return shape;
}
public static Shape CreateQuad(Vector3 position, Vector2 area, Vector4 uv, Color? hue = null, Vector4? extra = null)
{
Shape shape = new Shape();
Color iHue = (hue == null) ? Color.White : hue.Value;
Vector4 iExtra = (extra == null) ? Vector4.Zero : extra.Value;
shape.Vertices = new VertexPositionTextureHueExtra[]{
new VertexPositionTextureHueExtra(position, new Vector2(uv.X, uv.Y), iHue, iExtra), // top left
new VertexPositionTextureHueExtra(position + new Vector3(area.X, 0, 0), new Vector2(uv.Z, uv.Y), iHue, iExtra), // top right
new VertexPositionTextureHueExtra(position + new Vector3(0, area.Y, 0), new Vector2(uv.X, uv.W), iHue, iExtra), // bottom left
new VertexPositionTextureHueExtra(position + new Vector3(area, 0), new Vector2(uv.Z, uv.W), iHue, iExtra), // bottom right
};
return shape;
}
public static Shape CreateLine(Vector3 start, Vector3 end, Color? hue = null, Vector4? extra = null)
{
Shape shape = new Shape();
Color iHue = (hue == null) ? Color.White : hue.Value;
Vector4 iExtra = (extra == null) ? Vector4.Zero : extra.Value;
float atan = Math.Atan(-(end.Y - start.Y) / (end.X - start.X));
Vector3 offset = new Vector3(Math.Sin(atan) / 2f, Math.Cos(atan) / 2f, 0);
shape.Vertices = new VertexPositionTextureHueExtra[]{
new VertexPositionTextureHueExtra(start - offset, new Vector2(0, 0), iHue, iExtra), // top left
new VertexPositionTextureHueExtra(start + offset, new Vector2(1, 0), iHue, iExtra), // top right
new VertexPositionTextureHueExtra(end - offset, new Vector2(0, 1), iHue, iExtra), // bottom left
new VertexPositionTextureHueExtra(end + offset, new Vector2(1, 1), iHue, iExtra), // bottom right
};
return shape;
}
