public static void RenderSvg(SKCanvas canvas, SkiaSharp.Extended.Svg.SKSvg svg, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Top,
float opacity = 1f,
float scale = 1f)
{
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: degrees or radians?
canvas.Scale(scale, scale);
var halfWidth = svg.CanvasSize.Width / 2;
var halfHeight = svg.CanvasSize.Height / 2;
// 0/0 are assumed at center of image, but Svg has 0/0 at left top position
canvas.Translate(-halfWidth + offsetX, -halfHeight - offsetY);
var rect = new SKRect(-halfWidth, -halfHeight, +halfWidth, +halfHeight);
//var color = new SKColor(255, 255, 255, (byte)(255 * opacity));
//var paint = new SKPaint { Color = color, FilterQuality = SKFilterQuality.High };
canvas.DrawPicture(svg.Picture, null);
canvas.Restore();
}
public static void Draw(SKCanvas canvas, SKImage bitmap, float x, float y, float rotation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Center,
float opacity = 1f,
float scale = 1f)
{
canvas.Save();
canvas.Translate(x, y);
if (rotation != 0)
{
canvas.RotateDegrees(rotation, 0, 0);
}
canvas.Scale(scale, scale);
var width = bitmap.Width;
var height = bitmap.Height;
x = offsetX + DetermineHorizontalAlignmentCorrection(horizontalAlignment, width);
y = -offsetY + DetermineVerticalAlignmentCorrection(verticalAlignment, height);
var halfWidth = width >> 1;
var halfHeight = height >> 1;
var rect = new SKRect(x - halfWidth, y - halfHeight, x + halfWidth, y + halfHeight);
Draw(canvas, bitmap, rect, opacity);
canvas.Restore();
}
public static void RenderBitmap(SKCanvas canvas, SKImage bitmap, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Center,
float opacity = 1f,
float scale = 1f)
{
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: degrees or radians?
canvas.Scale(scale, scale);
x = offsetX + DetermineHorizontalAlignmentCorrection(horizontalAlignment, bitmap.Width);
y = -offsetY + DetermineVerticalAlignmentCorrection(verticalAlignment, bitmap.Height);
var halfWidth = bitmap.Width / 2;
var halfHeight = bitmap.Height / 2;
var rect = new SKRect(x - halfWidth, y - halfHeight, x + halfWidth, y + halfHeight);
RenderBitmap(canvas, bitmap, rect, opacity);
canvas.Restore();
}
public static void RenderTexture(TextureInfo textureInfo, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Center,
float opacity = 1f,
float scale = 1f)
{
GL.Enable(All.Texture2D);
GL.BindTexture(All.Texture2D, textureInfo.TextureId);
GL.PushMatrix();
GL.Translate(x, y, 0f);
GL.Rotate(orientation, 0, 0, 1);
GL.Scale(scale, scale, 1);
x = offsetX + DetermineHorizontalAlignmentCorrection(horizontalAlignment, textureInfo.Width);
y = -offsetY + DetermineVerticalAlignmentCorrection(verticalAlignment, textureInfo.Height);
var halfWidth = textureInfo.Width / 2;
var halfHeight = textureInfo.Height / 2;
var vertextArray = new[]
{
x - halfWidth, y - halfHeight,
x + halfWidth, y - halfHeight,
x + halfWidth, y + halfHeight,
x - halfWidth, y + halfHeight
};
RenderTextureWithoutBinding(textureInfo.TextureId, vertextArray, opacity);
GL.PopMatrix();
GL.BindTexture(All.Texture2D, 0);
GL.Disable(All.Texture2D);
}
public static void Draw(SKCanvas canvas, SkiaSharp.Extended.Svg.SKSvg svg, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Top,
float opacity = 1f,
float scale = 1f)
{
// todo: I assume we also need to apply opacity.
// todo: It seems horizontalAlignment and verticalAlignment would make sense too. Is this similar to Anchor?
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: degrees or radians?
canvas.Scale(scale, scale);
var halfWidth = svg.CanvasSize.Width / 2;
var halfHeight = svg.CanvasSize.Height / 2;
// 0/0 are assumed at center of image, but Svg has 0/0 at left top position
canvas.Translate(-halfWidth + offsetX, -halfHeight - offsetY);
canvas.DrawPicture(svg.Picture, new SKPaint()
{
IsAntialias = true
});
canvas.Restore();
}
private static float DetermineVerticalAlignmentCorrection(
LabelStyle.VerticalAlignmentEnum verticalAlignment, float height)
{
if (verticalAlignment == LabelStyle.VerticalAlignmentEnum.Top)
{
return(-height / 2);
}
if (verticalAlignment == LabelStyle.VerticalAlignmentEnum.Bottom)
{
return(height / 2);
}
return(0.0f); // center
}
private static int DetermineVerticalAlignmentCorrection(
LabelStyle.VerticalAlignmentEnum verticalAlignment, int height)
{
if (verticalAlignment == LabelStyle.VerticalAlignmentEnum.Top)
{
return(-(height >> 1));
}
if (verticalAlignment == LabelStyle.VerticalAlignmentEnum.Bottom)
{
return(height >> 1);
}
return(0); // center
}
private static float CalcVerticalAlignment(LabelStyle.VerticalAlignmentEnum verticalAligment)
{
if (verticalAligment == LabelStyle.VerticalAlignmentEnum.Center)
{
return(0.5f);
}
if (verticalAligment == LabelStyle.VerticalAlignmentEnum.Top)
{
return(0f);
}
if (verticalAligment == LabelStyle.VerticalAlignmentEnum.Bottom)
{
return(1f);
}
throw new ArgumentException();
}
public static void RenderSvg(SKCanvas canvas, SkiaSharp.Extended.Svg.SKSvg svg, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Top,
float opacity = 1f,
float scale = 1f)
{
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: degrees or radians?
canvas.Scale(scale, scale);
var halfWidth = svg.CanvasSize.Width / 2;
var halfHeight = svg.CanvasSize.Height / 2;
// 0/0 are assumed at center of image, but Svg has 0/0 at left top position
canvas.Translate(-halfWidth + offsetX, -halfHeight - offsetY);
canvas.DrawPicture(svg.Picture);
canvas.Restore();
}
public static void Draw(SKCanvas canvas, SKSvg svg, float x, float y, float orientation = 0,
float offsetX = 0, float offsetY = 0,
LabelStyle.HorizontalAlignmentEnum horizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left,
LabelStyle.VerticalAlignmentEnum verticalAlignment = LabelStyle.VerticalAlignmentEnum.Top,
float opacity = 1f,
float scale = 1f)
{
// todo: I assume we also need to apply opacity.
// todo: It seems horizontalAlignment and verticalAlignment would make sense too. Is this similar to Anchor?
canvas.Save();
canvas.Translate(x, y);
canvas.RotateDegrees(orientation, 0, 0); // todo: degrees or radians?
canvas.Scale(scale, scale);
var halfWidth = svg.Picture.CullRect.Width / 2;
var halfHeight = svg.Picture.CullRect.Height / 2;
// 0/0 are assumed at center of image, but Svg has 0/0 at left top position
canvas.Translate(-halfWidth + offsetX, -halfHeight - offsetY);
var alpha = Convert.ToByte(255 * opacity);
var transparency = SKColors.White.WithAlpha(alpha);
using (var cf = SKColorFilter.CreateBlendMode(transparency, SKBlendMode.DstIn))
{
canvas.DrawPicture(svg.Picture, new SKPaint()
{
IsAntialias = true,
ColorFilter = cf,
});
}
canvas.Restore();
}
