/// <summary>
/// Draws text.
/// </summary>
/// <param name="text">The text.</param>
/// <param name="location">The location the text will be displayed at.</param>
/// <param name="font">The font of the text.</param>
/// <param name="size">The font size in points.</param>
/// <param name="brush">The brush used to draw the text.</param>
public void DrawText(string text, Vector2 location, Font font, float size, Brush brush)
{
if (string.IsNullOrWhiteSpace(text))
{
return;
}
float scale = (size * Dpi) / (72 * font.UnitsPerEm);
SetBrush(brush);
int horizontalPosition = 0;
int verticalPosition = font.Ascend;
for (int i = 0; i < text.Length; i++)
{
if (char.IsControl(text[i]))
{
switch (text[i])
{
case '\n':
verticalPosition += font.Ascend - font.Descend + font.LineGap;
horizontalPosition = 0;
break;
}
}
else
{
Font.Glyph glyph = font.GetGlyph(text[i]);
if (glyph.Vertices.Length > 0)
{
textMatrix = Matrix.Transpose(Matrix.Translation(horizontalPosition + glyph.LeftSideBearing, -verticalPosition, 0)
* Matrix.Scaling(scale, -scale, 1)
* Matrix.Translation(location.X, location.Y, 0));
UpdateMatrixBuffer();
brush.UpdateVertices(glyph.Vertices);
DrawVertices(glyph.Indices, glyph.Vertices);
}
horizontalPosition += glyph.AdvanceWidth;
}
}
textMatrix = Matrix.Identity;
UpdateMatrixBuffer();
}
/// <summary>
/// Sets the clipping region to the specified triangles.
/// </summary>
/// <param name="indices">The index buffer.</param>
/// <param name="vertices">The vertex buffer.</param>
/// <param name="reset">Optional. If set to true the old clipping region is discarded, otherweise the new region adds to the old one.</param>
/// <remarks>The clipping region is reset automatically before every render cycle.</remarks>
public void SetClip(int[] indices, Vector2[] vertices, bool reset = true)
{
SetBrushBuffer(ClipBrush);
if (reset) ResetClip();
deviceContext.OutputMerger.SetDepthStencilState(clipDepthStencilState, 1);
var realVertices = new Vertex[vertices.Length];
for (int i = 0; i < vertices.Length; i++)
realVertices[i] = new Vertex(vertices[i]);
DrawVertices(indices, realVertices);
deviceContext.OutputMerger.SetDepthStencilState(clippingDepthStencilState, 1);
}
/// <summary>
/// Draws layouted text.
/// </summary>
/// <param name="layout">The precalculated layout.</param>
/// <param name="location">THe location the layout will be displayed at.</param>
/// <param name="brush">The brush used to draw the layout.</param>
public void DrawTextLayout(TextLayout layout, Vector2 location, Brush brush)
{
}
/// <summary>
/// Draws text.
/// </summary>
/// <param name="text">The text.</param>
/// <param name="location">The location the text will be displayed at.</param>
/// <param name="font">The font of the text.</param>
/// <param name="size">The font size in points.</param>
/// <param name="brush">The brush used to draw the text.</param>
public void DrawText(string text, Vector2 location, Font font, float size, Brush brush)
{
if (string.IsNullOrWhiteSpace(text))
return;
float scale = (size * Dpi) / (72 * font.UnitsPerEm);
SetBrush(brush);
int horizontalPosition = 0;
int verticalPosition = font.Ascend;
for (int i = 0; i < text.Length; i++)
{
if (char.IsControl(text[i]))
{
switch (text[i])
{
case '\n':
verticalPosition += font.Ascend - font.Descend + font.LineGap;
horizontalPosition = 0;
break;
}
}
else
{
Font.Glyph glyph = font.GetGlyph(text[i]);
if (glyph.Vertices.Length > 0)
{
textMatrix = Matrix.Transpose(Matrix.Translation(horizontalPosition + glyph.LeftSideBearing, -verticalPosition, 0)
* Matrix.Scaling(scale, -scale, 1)
* Matrix.Translation(location.X, location.Y, 0));
UpdateMatrixBuffer();
brush.UpdateVertices(glyph.Vertices);
DrawVertices(glyph.Indices, glyph.Vertices);
}
horizontalPosition += glyph.AdvanceWidth;
}
}
textMatrix = Matrix.Identity;
UpdateMatrixBuffer();
}
/// <summary>
/// Fills a set of triangles with a brush.
/// </summary>
/// <param name="indices">The index buffer.</param>
/// <param name="vertices">The vertex buffer.</param>
/// <param name="brush">The brush used to fill the triangles.</param>
public void FillTriangleList(int[] indices, Vector2[] vertices, Brush brush)
{
SetBrush(brush);
var realVertices = new Vertex[vertices.Length];
for (int i = 0; i < vertices.Length; i++)
realVertices[i] = new Vertex(vertices[i]);
brush.UpdateVertices(realVertices);
DrawVertices(indices, realVertices);
}
/// <summary>
/// Draws a texture.
/// </summary>
/// <param name="texture">The texture.</param>
/// <param name="location">The loction the texture will be displayed at.</param>
/// <param name="opacity">The opacity of the drawn texture.</param>
/// <param name="interpolationMode">The interpolation mode used to stretch the texture.</param>
public void DrawTexture(Texture texture, Vector2 location, float opacity = 1, InterpolationMode interpolationMode = InterpolationMode.Default)
{
DrawTexture(texture, Color4.White, new Rectangle(location.X, location.Y, texture.Width, texture.Height), opacity, interpolationMode);
}
/// <summary>
/// Draws layouted text.
/// </summary>
/// <param name="layout">The precalculated layout.</param>
/// <param name="location">THe location the layout will be displayed at.</param>
/// <param name="brush">The brush used to draw the layout.</param>
public void DrawTextLayout(TextLayout layout, Vector2 location, Brush brush)
{
}
/// <summary>
/// Draws a texture.
/// </summary>
/// <param name="texture">The texture.</param>
/// <param name="location">The loction the texture will be displayed at.</param>
/// <param name="opacity">The opacity of the drawn texture.</param>
/// <param name="interpolationMode">The interpolation mode used to stretch the texture.</param>
public void DrawTexture(Texture texture, Vector2 location, float opacity = 1, InterpolationMode interpolationMode = InterpolationMode.Default)
{
DrawTexture(texture, Color4.White, new Rectangle(location.X, location.Y, texture.Width, texture.Height), opacity, interpolationMode);
}
