public override void Draw(Cairo.Context ctx, Vector3 origin, Graphics.Camera camera)
{
// just draw a circle
var pos = camera.Transform(this.position) - camera.Transform(origin);
var cl = this.color;
ctx.SetSourceRGB(cl.x, cl.y, cl.z);
ctx.Arc(pos.x, pos.y, this.radius, 0, 2 * Math.PI);
ctx.Fill();
}
public override void Draw(Cairo.Context ctx, Vector3 origin, Graphics.Camera camera)
{
Vector3[] vertices = new Vector3[] {
ToExternalPosition(new Vector3((dimensions.x - line_width) / 2, (dimensions.y - line_width) / 2, (dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3((dimensions.x - line_width) / 2, (dimensions.y - line_width) / 2, -(dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3((dimensions.x - line_width) / 2, -(dimensions.y - line_width) / 2, (dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3((dimensions.x - line_width) / 2, -(dimensions.y - line_width) / 2, -(dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3(-(dimensions.x - line_width) / 2, (dimensions.y - line_width) / 2, (dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3(-(dimensions.x - line_width) / 2, (dimensions.y - line_width) / 2, -(dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3(-(dimensions.x - line_width) / 2, -(dimensions.y - line_width) / 2, (dimensions.z - line_width) / 2)),
ToExternalPosition(new Vector3(-(dimensions.x - line_width) / 2, -(dimensions.y - line_width) / 2, -(dimensions.z - line_width) / 2)),
};
// vertices adjacent to each (but not repeated)
int[][] adjacency = new int[][] {
new int[] { 1, 2, 4 },
new int[] { 3, 5 },
new int[] { 3, 6 },
new int[] { 7 },
new int[] { 5, 6 },
new int[] { 7 },
new int[] { 7 }
};
var cl = this.color;
ctx.SetSourceRGB(cl.x, cl.y, cl.z);
ctx.LineWidth = this.line_width;
for (int i = 0; i < 7; i++)
{
foreach (int j in adjacency[i])
{
var p1 = camera.Transform(vertices[i]) - camera.Transform(origin);
var p2 = camera.Transform(vertices[j]) - camera.Transform(origin);
ctx.MoveTo(p1.x, p1.y);
ctx.LineTo(p2.x, p2.y);
ctx.Stroke();
}
}
}