public Ray3 GetGlobalRayForHmgnPointer(float aspectRatio, Vector2 hmgnPointerPos)
{
var frame = GetGlobalFrame();
var proj = GetProps().Projection;
var halfHeight = proj.ZNear * MathHelper.Tan(proj.Fov / 2f);
var halfWidth = halfHeight * aspectRatio;
var worldPoint = frame.Eye + frame.Forward * proj.ZNear +
frame.Right * halfWidth * hmgnPointerPos.X +
frame.Up * halfHeight * hmgnPointerPos.Y;
return(new Ray3(worldPoint, worldPoint - frame.Eye));
}
private void ResizeViewports()
{
var numRows = tableLayout.ViewportIndices.GetLength(0);
var numCols = tableLayout.ViewportIndices.GetLength(1);
var offsets = new Vector2[numRows + 1, numCols + 1];
var rowOffset = 0f;
for (int r = 0; r < numRows + 1; r++)
{
var colOffset = 0f;
for (int c = 0; c < numCols + 1; c++)
{
offsets[r, c] = new Vector2(colOffset, rowOffset);
if (c < numCols)
{
colOffset += ToActualPixels(tableLayout.ColumnWidths[c], Width);
}
}
if (r < numRows)
{
rowOffset += ToActualPixels(tableLayout.RowHeights[r], Height);
}
}
for (int i = 0; i < Viewports.Count; i++)
{
var viewport = Viewports[i];
int startRow, endRow, startCol, endCol;
if (TryGetViewportBorderCells(i, out startRow, out endRow, out startCol, out endCol))
{
var topLeft = offsets[startRow, startCol];
var bottomRight = offsets[endRow + 1, endCol + 1];
var size = bottomRight - topLeft;
viewport.OnResized(topLeft.X, topLeft.Y, size.X, size.Y);
}
else
{
viewport.OnResized(0, 0, 0, 0);
}
}
}
private static Vector2 Hmgnize(Vector2 v)
{
return(new Vector2(
v.X / Screen.width * 2f - 1f,
1f - v.Y * 2f / Screen.height));
}
private static Vector2 Normalize(Vector2 v)
{
return(new Vector2(
2f * (v.X - Screen.width / 2f) / Screen.height,
1f - v.Y * 2f / Screen.height));
}
private static IntVector2 Round(Vector2 v) => new IntVector2(Round(v.X), Round(v.Y));
