Draw

Routines for drawing sprites and primitives to the screen.

Header: #include <asw/modules/draw.h>Namespace: asw::draw

Sprite Drawing

sprite

void sprite(const asw::Texture& tex, const asw::Vec2<float>& position);

Draw a texture at the given position.

sprite_flip

void sprite_flip(const asw::Texture& tex,
                 const asw::Vec2<float>& position,
                 bool flip_x,
                 bool flip_y);

Draw a sprite with optional horizontal and/or vertical flipping.

stretch_sprite

void stretch_sprite(const asw::Texture& tex, const asw::Quad<float>& position);

Draw a sprite stretched to fit the given quad (position + size).

rotate_sprite

void rotate_sprite(const asw::Texture& tex,
                   const asw::Vec2<float>& position,
                   float angle);

Draw a sprite rotated by the given angle (in radians).

stretch_sprite_blit

void stretch_sprite_blit(const asw::Texture& tex,
                         const asw::Quad<float>& source,
                         const asw::Quad<float>& dest);

Draw a portion of a texture (defined by source) stretched to the dest quad.

stretch_sprite_rotate_blit

void stretch_sprite_rotate_blit(const asw::Texture& tex,
                                const asw::Quad<float>& source,
                                const asw::Quad<float>& dest,
                                float angle);

Draw a portion of a texture stretched and rotated (angle in radians).

Text Drawing

text

void text(const asw::Font& font,
          const std::string& text,
          const asw::Vec2<float>& position,
          asw::Color color,
          asw::TextJustify justify = asw::TextJustify::Left);

Draw text with the specified justification.

Parameter	Type	Default	Description
font	const asw::Font&		The font to use
text	const std::string&		The text to draw
position	const asw::Vec2<float>&		The position to draw at
color	asw::Color		The text color
justify	asw::TextJustify	Left	Text alignment (Left, Center, Right)

Primitive Drawing

clear_color

void clear_color(asw::Color color);

Clear the screen to a color.

point

void point(const asw::Vec2<float>& position, asw::Color color);

Draw a single point.

line

void line(const asw::Vec2<float>& position1,
          const asw::Vec2<float>& position2,
          asw::Color color);

Draw a line between two points.

rect

void rect(const asw::Quad<float>& position, asw::Color color);

Draw an outlined rectangle.

rect_fill

void rect_fill(const asw::Quad<float>& position, asw::Color color);

Draw a filled rectangle.

circle

void circle(const asw::Vec2<float>& position, float radius, asw::Color color);

Draw an outlined circle.

circle_fill

void circle_fill(const asw::Vec2<float>& position, float radius, asw::Color color);

Draw a filled circle.

Texture Utilities

set_blend_mode

void set_blend_mode(const asw::Texture& texture, asw::BlendMode mode);

Set the blend mode of a texture.

set_alpha

void set_alpha(const asw::Texture& texture, float alpha);

Set the alpha (opacity) of a texture.

Example

auto tex = asw::assets::load_texture("player.png");
auto font = asw::assets::load_font("font.ttf", 16);

// Draw sprite
asw::draw::sprite(tex, {100.0f, 200.0f});

// Draw rotated sprite (radians)
asw::draw::rotate_sprite(tex, {100.0f, 200.0f}, 0.785f);

// Draw primitives
asw::draw::rect_fill({10, 10, 100, 50}, asw::color::red);
asw::draw::circle_fill({200.0f, 200.0f}, 30.0f, asw::color::lime);

// Draw text with justification
asw::draw::text(font, "Hello ASW!", {10.0f, 10.0f}, asw::color::white);
asw::draw::text(font, "Centered", {320.0f, 10.0f}, asw::color::white, asw::TextJustify::Center);