void Sprite::Render(RenderTarget&, Renderer& renderer) const
{
// Get the sprite size
float width = static_cast<float>(mySubRect.Width);
float height = static_cast<float>(mySubRect.Height);
// Check if the texture is valid, and calculate the texture coordinates
FloatRect coords;
if (myTexture)
coords = myTexture->GetTexCoords(mySubRect);
// Compute the texture coordinates
float left = coords.Left;
float top = coords.Top;
float right = coords.Left + coords.Width;
float bottom = coords.Top + coords.Height;
if (myIsFlippedX) std::swap(left, right);
if (myIsFlippedY) std::swap(top, bottom);
// Bind the texture
renderer.SetTexture(myTexture);
// Draw the sprite's geometry
renderer.Begin(Renderer::TriangleStrip);
renderer.AddVertex(0, 0, left, top);
renderer.AddVertex(width, 0, right, top);
renderer.AddVertex(0, height, left, bottom);
renderer.AddVertex(width, height, right, bottom);
renderer.End();
}
void AnimatedSprite::Render(RenderTarget&, Renderer& renderer) const
{
// Get the sprite size
float width = mSubRectSize.x;
float height = mSubRectSize.y;
// Check if the image is valid, and calculate the texture coordinates
FloatRect coords;
IntRect subrect(mSubRectOffset.x + mSubRectSize.x * mFrameNumber, mSubRectOffset.y, mSubRectSize.x, mSubRectSize.y);
if (GetImage())
coords = GetImage()->GetTexCoords(subrect);
// Compute the texture coordinates
float left = coords.Left;
float top = coords.Top;
float right = coords.Left + coords.Width;
float bottom = coords.Top + coords.Height;
// Bind the texture
renderer.SetTexture(GetImage());
// Draw the sprite's geometry
renderer.Begin(Renderer::TriangleStrip);
renderer.AddVertex(0, 0, left, top);
renderer.AddVertex(width, 0, right, top);
renderer.AddVertex(0, height, left, bottom);
renderer.AddVertex(width, height, right, bottom);
renderer.End();
}
void Text::Render(RenderTarget&, Renderer& renderer) const
{
// No text or not font: nothing to render
if (!myFont || myString.IsEmpty())
return;
// Bind the font texture
const Image& texture = myFont->GetImage(myCharacterSize);
renderer.SetTexture(&texture);
// Computes values related to the text style
bool bold = (myStyle & Bold) != 0;
bool underlined = (myStyle & Underlined) != 0;
float italicCoeff = (myStyle & Italic) ? 0.208f : 0.f; // 12 degrees
float underlineOffset = myCharacterSize * 0.1f;
float underlineThickness = myCharacterSize * (bold ? 0.1f : 0.07f);
FloatRect underlineCoords = texture.GetTexCoords(IntRect(1, 1, 1, 1));
float underlineLeft = underlineCoords.Left;
float underlineTop = underlineCoords.Top;
float underlineRight = underlineCoords.Left + underlineCoords.Width;
float underlineBottom = underlineCoords.Top + underlineCoords.Height;
// Initialize the rendering coordinates
float space = static_cast<float>(myFont->GetGlyph(L' ', myCharacterSize, bold).Advance);
float lineSpacing = static_cast<float>(myFont->GetLineSpacing(myCharacterSize));
float x = 0.f;
float y = static_cast<float>(myCharacterSize);
// Note:
// Here we use a Begin/End pair for each quad because
// the font's texture may change in a call to GetGlyph
// Draw one quad for each character
Uint32 prevChar = 0;
for (std::size_t i = 0; i < myString.GetSize(); ++i)
{
Uint32 curChar = myString[i];
// Apply the kerning offset
x += static_cast<float>(myFont->GetKerning(prevChar, curChar, myCharacterSize));
prevChar = curChar;
// If we're using the underlined style and there's a new line, draw a line
if (underlined && (curChar == L'\n'))
{
float top = y + underlineOffset;
float bottom = top + underlineThickness;
renderer.Begin(Renderer::QuadList);
renderer.AddVertex(0, top, underlineLeft, underlineTop);
renderer.AddVertex(x, top, underlineRight, underlineTop);
renderer.AddVertex(x, bottom, underlineRight, underlineBottom);
renderer.AddVertex(0, bottom, underlineLeft, underlineBottom);
renderer.End();
}
// Handle special characters
switch (curChar)
{
case L' ' : x += space; continue;
case L'\t' : x += space * 4; continue;
case L'\n' : y += lineSpacing; x = 0; continue;
case L'\v' : y += lineSpacing * 4; continue;
}
// Extract the current glyph's description
const Glyph& glyph = myFont->GetGlyph(curChar, myCharacterSize, bold);
int advance = glyph.Advance;
const IntRect& bounds = glyph.Bounds;
const FloatRect& coords = texture.GetTexCoords(glyph.SubRect);
int boundsRight = bounds.Left + bounds.Width;
int boundsBottom = bounds.Top + bounds.Height;
float coordsRight = coords.Left + coords.Width;
float coordsBottom = coords.Top + coords.Height;
// Draw a textured quad for the current character
renderer.Begin(Renderer::QuadList);
renderer.AddVertex(x + bounds.Left - italicCoeff * bounds.Top, y + bounds.Top, coords.Left, coords.Top);
renderer.AddVertex(x + boundsRight - italicCoeff * bounds.Top, y + bounds.Top, coordsRight, coords.Top);
renderer.AddVertex(x + boundsRight - italicCoeff * boundsBottom, y + boundsBottom, coordsRight, coordsBottom);
renderer.AddVertex(x + bounds.Left - italicCoeff * boundsBottom, y + boundsBottom, coords.Left, coordsBottom);
renderer.End();
// Advance to the next character
x += advance;
}
// If we're using the underlined style, add the last line
if (underlined)
{
float top = y + underlineOffset;
float bottom = top + underlineThickness;
renderer.Begin(Renderer::QuadList);
renderer.AddVertex(0, top, underlineLeft, underlineTop);
renderer.AddVertex(x, top, underlineRight, underlineTop);
renderer.AddVertex(x, bottom, underlineRight, underlineBottom);
renderer.AddVertex(0, bottom, underlineLeft, underlineBottom);
renderer.End();
}
}
