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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2008 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Sprite.hpp>
#include <SFML/Graphics/Image.hpp>
#include <SFML/Graphics/Renderer.hpp>
namespace sf
{
////////////////////////////////////////////////////////////
/// Default constructor
////////////////////////////////////////////////////////////
Sprite::Sprite() :
myImage (NULL),
mySubRect (0, 0, 1, 1),
myIsFlippedX(false),
myIsFlippedY(false)
{
}
////////////////////////////////////////////////////////////
/// Construct the sprite from a source image
////////////////////////////////////////////////////////////
Sprite::Sprite(const Image& Img, const Vector2f& Position, const Vector2f& Scale, float Rotation, const Color& Col) :
Drawable (Position, Scale, Rotation, Col),
myImage (&Img),
mySubRect (0, 0, Img.GetWidth(), Img.GetHeight()),
myIsFlippedX(false),
myIsFlippedY(false)
{
}
////////////////////////////////////////////////////////////
/// Set the image of the sprite
////////////////////////////////////////////////////////////
void Sprite::SetImage(const Image& Img)
{
// If there was no source image before, adjust the rectangle
if (!myImage)
SetSubRect(IntRect(0, 0, Img.GetWidth(), Img.GetHeight()));
// Assign the new image
myImage = &Img;
}
////////////////////////////////////////////////////////////
/// Set the sub-rectangle of the sprite inside the source image
////////////////////////////////////////////////////////////
void Sprite::SetSubRect(const IntRect& SubRect)
{
mySubRect = SubRect;
}
////////////////////////////////////////////////////////////
/// Resize the sprite (by changing its scale factors) (take 2 values).
/// The default size is defined by the subrect
////////////////////////////////////////////////////////////
void Sprite::Resize(float Width, float Height)
{
if ((mySubRect.GetWidth() > 0) && (mySubRect.GetHeight() > 0))
{
SetScale(Width / mySubRect.GetWidth(), Height / mySubRect.GetHeight());
}
}
////////////////////////////////////////////////////////////
/// Resize the object (by changing its scale factors) (take a 2D vector)
/// The default size is defined by the subrect
////////////////////////////////////////////////////////////
void Sprite::Resize(const Vector2f& Size)
{
Resize(Size.x, Size.y);
}
////////////////////////////////////////////////////////////
/// Flip the sprite horizontally
////////////////////////////////////////////////////////////
void Sprite::FlipX(bool Flipped)
{
myIsFlippedX = Flipped;
}
////////////////////////////////////////////////////////////
/// Flip the sprite vertically
////////////////////////////////////////////////////////////
void Sprite::FlipY(bool Flipped)
{
myIsFlippedY = Flipped;
}
////////////////////////////////////////////////////////////
/// Get the source image of the sprite
////////////////////////////////////////////////////////////
const Image* Sprite::GetImage() const
{
return myImage;
}
////////////////////////////////////////////////////////////
/// Get the sub-rectangle of the sprite inside the source image
////////////////////////////////////////////////////////////
const IntRect& Sprite::GetSubRect() const
{
return mySubRect;
}
////////////////////////////////////////////////////////////
/// Get the sprite size
////////////////////////////////////////////////////////////
Vector2f Sprite::GetSize() const
{
return Vector2f(mySubRect.GetWidth() * GetScale().x, mySubRect.GetHeight() * GetScale().y);
}
////////////////////////////////////////////////////////////
/// Get the color of a given pixel in the sprite
////////////////////////////////////////////////////////////
Color Sprite::GetPixel(unsigned int X, unsigned int Y) const
{
if (myImage)
{
unsigned int ImageX = mySubRect.Left + static_cast<unsigned int>(X / GetScale().x);
unsigned int ImageY = mySubRect.Top + static_cast<unsigned int>(Y / GetScale().y);
return myImage->GetPixel(ImageX, ImageY) * GetColor();
}
else
{
return GetColor();
}
}
////////////////////////////////////////////////////////////
/// /see sfDrawable::Render
////////////////////////////////////////////////////////////
void Sprite::Render(const RenderWindow&) const
{
// Get the sprite size
float Width = static_cast<float>(mySubRect.GetWidth());
float Height = static_cast<float>(mySubRect.GetHeight());
// Check if the image is valid
if (myImage)
{
// Set the texture
myImage->Bind();
// Calculate the texture coordinates
FloatRect TexCoords = myImage->GetTexCoords(mySubRect);
FloatRect Rect(myIsFlippedX ? TexCoords.Right : TexCoords.Left,
myIsFlippedY ? TexCoords.Bottom : TexCoords.Top,
myIsFlippedX ? TexCoords.Left : TexCoords.Right,
myIsFlippedY ? TexCoords.Top : TexCoords.Bottom);
// Draw the sprite's triangles
glBegin(GL_QUADS);
glTexCoord2f(Rect.Left, Rect.Top); glVertex2f(0, 0);
glTexCoord2f(Rect.Left, Rect.Bottom); glVertex2f(0, Height);
glTexCoord2f(Rect.Right, Rect.Bottom); glVertex2f(Width, Height);
glTexCoord2f(Rect.Right, Rect.Top); glVertex2f(Width, 0) ;
glEnd();
}
else
{
// Disable texturing
GLCheck(glDisable(GL_TEXTURE_2D));
// Draw the sprite's triangles
glBegin(GL_QUADS);
glVertex2f(0, 0);
glVertex2f(0, Height);
glVertex2f(Width, Height);
glVertex2f(Width, 0);
glEnd();
}
}
} // namespace sf
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