void AddSamplePatch()
{
float sizeDim = Math.Min((float)canvasControl.Size.Width, (float)canvasControl.Size.Height);
float scale = 722 / sizeDim;
// Move everything upwards slightly so it looks better in the thumbnail.
float yAdjust = -50.0f;
Vector2[] points = new Vector2[12];
points[0] = new Vector2(245.9669f * scale, (358.0068f + yAdjust) * scale);
points[1] = new Vector2(157.9796f * scale, (127.9815f + yAdjust) * scale);
points[2] = new Vector2(216.6f * scale, (72.2f + yAdjust) * scale);
points[3] = new Vector2(288.8f * scale, (72.2f + yAdjust) * scale);
points[11] = new Vector2(84.99683f * scale, (443.9924f + yAdjust) * scale);
points[4] = new Vector2(288.8f * scale, (144.4f + yAdjust) * scale);
points[10] = new Vector2(72.2f * scale, (216.6f + yAdjust) * scale);
points[5] = new Vector2(288.8f * scale, (216.6f + yAdjust) * scale);
points[9] = new Vector2(72.2f * scale, (288.8f + yAdjust) * scale);
points[8] = new Vector2(144.4f * scale, (288.8f + yAdjust) * scale);
points[7] = new Vector2(216.6f * scale, (288.8f + yAdjust) * scale);
points[6] = new Vector2(292.9843f * scale, (289.9744f + yAdjust) * scale);
patchPoints.Add(points);
gradientMesh = null;
canvasControl.Invalidate();
}
void EnsureMesh(ICanvasResourceCreator resourceCreator)
{
if (gradientMesh != null)
{
return;
}
CanvasGradientMeshPatch[] patchArray = new CanvasGradientMeshPatch[patchPoints.Count];
for (int i = 0; i < patchPoints.Count; ++i)
{
CanvasGradientMeshPatch patch;
var points = patchPoints[i];
var colors = new Vector4[] { Color00.Color, Color03.Color, Color30.Color, Color33.Color };
var edges = new CanvasGradientMeshPatchEdge[] { Edge00To03, Edge03To33, Edge33To30, Edge30To00 };
if (patchPoints[i].Length == 12)
{
patch = CanvasGradientMesh.CreateCoonsPatch(points, colors, edges);
}
else
{
Debug.Assert(patchPoints[i].Length == 16);
patch = CanvasGradientMesh.CreateTensorPatch(points, colors, edges);
}
patchArray[i] = patch;
}
// Gradient meshes are allowed to be zero-sized, so there is no need to
// account for zero here.
gradientMesh = new CanvasGradientMesh(resourceCreator, patchArray);
}
private void canvasControl_PointerMoved(object sender, PointerRoutedEventArgs e)
{
if (pickedUp.PatchIndex >= 0)
{
foreach (var point in e.GetIntermediatePoints(canvasControl))
{
if (point.IsInContact)
{
patchPoints[pickedUp.PatchIndex][pickedUp.PointIndex] = point.Position.ToVector2();
gradientMesh = null;
break;
}
}
canvasControl.Invalidate();
e.Handled = true;
}
}
void AddDefaultPatch(bool tensor)
{
float sizeDim = Math.Min((float)canvasControl.Size.Width, (float)canvasControl.Size.Height);
Vector2[] pointArray = new Vector2[tensor ? 16 : 12];
int[] coonsIndices = { 0, 1, 2, 3, 11, 4, 10, 5, 9, 8, 7, 6 };
float topLeftMargin = (sizeDim / 10) + ((sizeDim / 10) * patchPoints.Count);
topLeftMargin = topLeftMargin % sizeDim;
float spacing = sizeDim / 10.0f;
int count = 0;
for (int y = 0; y < 4; y++)
{
for (int x = 0; x < 4; x++)
{
int index = 0;
if (tensor)
{
index = count;
}
else
{
int coordIndex = (y * 4 + x);
if (coordIndex == 5 || coordIndex == 6 || coordIndex == 9 || coordIndex == 10)
{
continue;
}
index = coonsIndices[count];
}
pointArray[index] = new Vector2(topLeftMargin + (x * spacing), topLeftMargin + (y * spacing));
count++;
}
}
patchPoints.Add(pointArray);
gradientMesh = null;
canvasControl.Invalidate();
}
private void SettingsCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
gradientMesh = null;
canvasControl.Invalidate();
}
private void Clear_Clicked(object sender, RoutedEventArgs e)
{
patchPoints.Clear();
gradientMesh = null;
canvasControl.Invalidate();
}
