private void MakeArrowIcons()
{
var center = TrackBallController.ScreenCenter;
var radius = TrackBallController.TrackBallRadius;
insideArrows.Clear();
// create the inside arrows
{
var svg = new PathStorage("M560.512 0.570216 C560.512 2.05696 280.518 560.561 280.054 560 C278.498 558.116 0 0.430888 0.512416 0.22416 C0.847112 0.089136 63.9502 27.1769 140.742 60.4192 C140.742 60.4192 280.362 120.86 280.362 120.86 C280.362 120.86 419.756 60.4298 419.756 60.4298 C496.422 27.1934 559.456 0 559.831 0 C560.205 0 560.512 0.2566 560.512 0.570216 Z");
RectangleDouble bounds = svg.GetBounds();
double arrowWidth = radius / 10;
var centered = Affine.NewTranslation(-bounds.Center);
var scaledTo1 = Affine.NewScaling(1 / bounds.Width);
var scaledToSize = Affine.NewScaling(arrowWidth);
var moveToRadius = Affine.NewTranslation(new Vector2(0, radius * 9 / 10));
var moveToScreenCenter = Affine.NewTranslation(center);
for (int i = 0; i < 4; i++)
{
var arrowLeftTransform = centered * scaledTo1 * scaledToSize * moveToRadius * Affine.NewRotation(MathHelper.Tau / 4 * i) * moveToScreenCenter;
insideArrows.Add(new VertexSourceApplyTransform(svg, arrowLeftTransform));
}
}
outsideArrows.Clear();
// and the outside arrows
{
//var svg = new PathStorage("m 271.38288,545.86543 c -10.175,-4.94962 -23,-11.15879 -28.5,-13.79816 -5.5,-2.63937 -24.34555,-11.82177 -41.87901,-20.40534 -17.53346,-8.58356 -32.21586,-15.60648 -32.62756,-15.60648 -0.4117,0 -1.28243,-0.64329 -1.93495,-1.42954 -0.98148,-1.1826 -0.0957,-1.94177 5.12755,-4.39484 3.47268,-1.63091 16.21397,-7.7909 28.31397,-13.68887 12.1,-5.89797 30.55,-14.8788 41,-19.9574 10.45,-5.07859 25.64316,-12.49628 33.76258,-16.48374 8.11942,-3.98746 15.43192,-6.99308 16.25,-6.67916 2.02527,0.77717 1.8755,5.19031 -0.56452,16.63355 -1.11411,5.225 -2.29208,10.9625 -2.6177,12.75 l -0.59204,3.25 80.19823,0 c 75.90607,0 80.17104,-0.0937 79.69036,-1.75 -2.47254,-8.51983 -5.62648,-24.42623 -5.62674,-28.37756 -3.6e-4,-5.51447 1.61726,-5.18356 21.01872,4.29961 10.16461,4.96833 22.98111,11.1892 28.48111,13.82415 5.5,2.63496 24.34555,11.81375 41.87901,20.39732 17.53346,8.58356 32.21586,15.60648 32.62756,15.60648 0.4117,0 1.28243,0.64329 1.93495,1.42954 0.98144,1.18256 0.0956,1.94283 -5.12755,4.40048 -3.47268,1.63401 -15.98897,7.68875 -27.81397,13.45496 -11.825,5.76621 -31.625,15.41743 -44,21.44716 -12.375,6.02972 -27.79146,13.55332 -34.2588,16.71911 -6.99025,3.42175 -12.41867,5.50276 -13.38597,5.13157 -2.11241,-0.81061 -1.37413,-8.85503 2.14722,-23.39653 1.37365,-5.67253 2.49755,-10.73503 2.49755,-11.25 0,-0.57397 -31.15148,-0.93629 -80.5,-0.93629 -76.11526,0 -80.5,0.0957 -80.5,1.7566 0,0.96613 0.45587,3.32863 1.01304,5.25 1.68077,5.79599 4.98696,23.01922 4.98696,25.97902 0,5.59974 -1.53004,5.29551 -21,-4.17564 z");
var svg = new PathStorage("M560.512 0.570216 C560.512 2.05696 280.518 560.561 280.054 560 C278.498 558.116 0 0.430888 0.512416 0.22416 C0.847112 0.089136 63.9502 27.1769 140.742 60.4192 C140.742 60.4192 280.362 120.86 280.362 120.86 C280.362 120.86 419.756 60.4298 419.756 60.4298 C496.422 27.1934 559.456 0 559.831 0 C560.205 0 560.512 0.2566 560.512 0.570216 Z");
RectangleDouble bounds = svg.GetBounds();
double arrowWidth = radius / 15;
var centered = Affine.NewTranslation(-bounds.Center);
var scaledTo1 = Affine.NewScaling(1 / bounds.Width);
var scaledToSize = Affine.NewScaling(arrowWidth);
var moveToRadius = Affine.NewTranslation(new Vector2(0, radius * 16 / 15));
var moveToScreenCenter = Affine.NewTranslation(center);
for (int i = 0; i < 4; i++)
{
var arrowLeftTransform = centered * scaledTo1 * scaledToSize * Affine.NewRotation(MathHelper.Tau / 4) * moveToRadius * Affine.NewRotation(MathHelper.Tau / 8 + MathHelper.Tau / 4 * i + MathHelper.Tau / 80) * moveToScreenCenter;
outsideArrows.Add(new VertexSourceApplyTransform(svg, arrowLeftTransform));
var arrowRightTransform = centered * scaledTo1 * scaledToSize * Affine.NewRotation(-MathHelper.Tau / 4) * moveToRadius * Affine.NewRotation(MathHelper.Tau / 8 + MathHelper.Tau / 4 * i - MathHelper.Tau / 80) * moveToScreenCenter;
outsideArrows.Add(new VertexSourceApplyTransform(svg, arrowRightTransform));
}
}
}
