StereoKit previous theme

OldTheme.cs

// This function will restore the StereoKit theme used in versions prior to
// v0.3.9.

// This also requires the previous UI shaders, you will need to copy them and
// add them to your project's Assets. This file references them as:
// ui.hlsl - https://github.com/StereoKit/StereoKit/blob/646afeef576a2f04103b0b99e2ee932cffa814b4/StereoKitC/shaders_builtin/shader_builtin_ui.hlsl
// ui_quadrant.hlsl - https://github.com/StereoKit/StereoKit/blob/646afeef576a2f04103b0b99e2ee932cffa814b4/StereoKitC/shaders_builtin/shader_builtin_ui_quadrant.hlsl

static void ApplyTheme_SKPrevious()
{
	UI.Settings = new UISettings
	{
		margin   = 0.01f,
		padding  = 0.01f,
		gutter   = 0.01f,
		depth    = 0.01f,
		rounding = 0.0075f
	};
	UILathePt[] defaultLathe =
	{
		new UILathePt{ pt = V.XY(0,    -0.5f), normal = V.XY(0, 1), color = new Color32(255,255,255,255), connectNext = true },
		new UILathePt{ pt = V.XY(0.83f,-0.5f), normal = V.XY(0, 1), color = new Color32(255,255,255,255), connectNext = false},
		new UILathePt{ pt = V.XY(0.83f,-0.5f), normal = V.XY(1, 2), color = new Color32(255,255,255,0),   connectNext = true },
		new UILathePt{ pt = V.XY(1,     0   ), normal = V.XY(1, 0), color = new Color32(255,255,255,0),   connectNext = true },
		new UILathePt{ pt = V.XY(0.83f, 0.5f), normal = V.XY(1,-2), color = new Color32(255,255,255,0),   connectNext = false},
		new UILathePt{ pt = V.XY(0.83f, 0.5f), normal = V.XY(0,-1), color = new Color32(255,255,255,255), connectNext = true },
		new UILathePt{ pt = V.XY(0,     0.5f), normal = V.XY(0,-1), color = new Color32(255,255,255,255), connectNext = true },
	};
	float round      = UI.Settings.rounding;
	float smallRound = Math.Min(UI.LineHeight / 3.0f, UI.Settings.rounding) / 2.0f;
	float fullRound  = UI.LineHeight/2.0f;
	Vec2 boxMin      = V.XY( round, round )*2;
	Vec2 smallMin    = V.XY( smallRound, smallRound )*2;
	Vec2 fullMin     = V.XY( fullRound, fullRound ) *2;
	Mesh box         = UI.GenQuadrantMesh(UICorner.All,    round,      5, false, defaultLathe);
	Mesh boxTop      = UI.GenQuadrantMesh(UICorner.Top,    round,      5, true,  defaultLathe);
	Mesh boxBot      = UI.GenQuadrantMesh(UICorner.Bottom, round,      5, true,  defaultLathe);
	Mesh small       = UI.GenQuadrantMesh(UICorner.All,    smallRound, 5, false, defaultLathe);
	Mesh smallLeft   = UI.GenQuadrantMesh(UICorner.Left,   smallRound, 5, true,  defaultLathe);
	Mesh smallRight  = UI.GenQuadrantMesh(UICorner.Right,  smallRound, 5, true,  defaultLathe);
	Mesh cylinder    = UI.GenQuadrantMesh(UICorner.All,    fullRound,  8, false, defaultLathe);

	Material matQuad = new Material("ui_quadrant.hlsl");
	Material mat     = new Material("ui.hlsl");
	mat["ui_tint"] = true;

	UI.SetElementVisual(UIVisual.Default,            box,        matQuad, boxMin);
	UI.SetElementVisual(UIVisual.Button,             box,        matQuad, boxMin);
	UI.SetElementVisual(UIVisual.Toggle,             box,        matQuad, boxMin);
	UI.SetElementVisual(UIVisual.Input,              box,        matQuad, boxMin);
	UI.SetElementVisual(UIVisual.Panel,              box,        matQuad, boxMin);
	UI.SetElementVisual(UIVisual.WindowHead,         boxTop,     matQuad, boxMin);
	UI.SetElementVisual(UIVisual.WindowBody,         boxBot,     matQuad, boxMin);
	UI.SetElementVisual(UIVisual.ButtonRound,        cylinder,   matQuad, fullMin);
	UI.SetElementVisual(UIVisual.SliderLine,         small,      matQuad, smallMin);
	UI.SetElementVisual(UIVisual.SliderLineActive,   smallLeft,  matQuad, smallMin);
	UI.SetElementVisual(UIVisual.SliderLineInactive, smallRight, matQuad, smallMin);
	UI.SetElementVisual(UIVisual.SliderPinch,        small,      matQuad, smallMin);
	UI.SetElementVisual(UIVisual.SliderPush,         small,      matQuad, smallMin);
	UI.SetElementVisual(UIVisual.Separator,          Mesh.Cube,  mat);
	UI.SetElementVisual(UIVisual.Carat,              Mesh.Cube,  mat);
}