void Canvas::fill_rect(float x1, float y1, float x2, float y2, const Gradient &gradient)
{
Vec2f positions[6] =
{
Vec2f(x1, y1),
Vec2f(x2, y1),
Vec2f(x1, y2),
Vec2f(x2, y1),
Vec2f(x1, y2),
Vec2f(x2, y2)
};
Vec4f colors[6] =
{
Vec4f(gradient.top_left),
Vec4f(gradient.top_right),
Vec4f(gradient.bottom_left),
Vec4f(gradient.top_right),
Vec4f(gradient.bottom_left),
Vec4f(gradient.bottom_right)
};
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, positions, colors, 6);
}
void Font_DrawFlat::draw_text(Canvas &canvas, const Pointf &position, const std::string &text, const Colorf &color, float line_spacing)
{
float offset_x = 0;
float offset_y = 0;
UTF8_Reader reader(text.data(), text.length());
RenderBatchTriangle *batcher = canvas.impl->batcher.get_triangle_batcher();
while (!reader.is_end())
{
unsigned int glyph = reader.get_char();
reader.next();
if (glyph == '\n')
{
offset_x = 0;
offset_y += line_spacing;
continue;
}
Font_TextureGlyph *gptr = glyph_cache->get_glyph(canvas, font_engine, glyph);
if (gptr)
{
if (!gptr->texture.is_null())
{
float xp = offset_x + position.x + gptr->offset.x;
float yp = offset_y + position.y + gptr->offset.y;
Rectf dest_size(xp, yp, Sizef(gptr->geometry.get_size()));
batcher->draw_image(canvas, gptr->geometry, dest_size, color, gptr->texture);
}
offset_x += gptr->metrics.advance.width;
offset_y += gptr->metrics.advance.height;
}
}
}
void Canvas::fill_triangles(const std::vector<Vec2f> &positions, const std::vector<Vec2f> &texture_positions, const Texture2D &texture, const std::vector<Colorf> &colors)
{
if (!positions.empty())
{
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangles(*this, &positions[0], &texture_positions[0], positions.size(), texture, &colors[0]);
}
}
void Canvas::fill_triangles(const std::vector<Vec2f> &triangles, const Colorf &color)
{
if (!triangles.empty())
{
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, &triangles[0], color, triangles.size());
}
}
void Canvas::fill_triangles(const Vec2f *triangle_positions, int num_vertices, const Texture2D &texture, const Rect &texture_rect, const Colorf &color)
{
if (num_vertices)
{
std::vector<Vec2f> texture_positions;
Canvas_Impl::get_texture_coords(triangle_positions, num_vertices, texture, texture_rect, texture_positions);
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangles(*this, triangle_positions, &texture_positions[0], num_vertices, texture, color);
}
}
void Canvas::fill_triangles(const std::vector<Vec2f> &positions, const Texture2D &texture, const Rect &texture_rect, const Colorf &color)
{
if (!positions.empty())
{
std::vector<Vec2f> texture_positions;
Canvas_Impl::get_texture_coords(&positions[0], positions.size(), texture, texture_rect, texture_positions);
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangles(*this, &positions[0], &texture_positions[0], positions.size(), texture, color);
}
}
void Canvas::fill_triangles(const std::vector<Vec2f> &triangles, const Gradient &gradient)
{
if (!triangles.empty())
{
std::vector<Colorf> colors;
Canvas_Impl::get_gradient_colors(&triangles[0], triangles.size(), gradient, colors);
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, &triangles[0], &colors[0], triangles.size());
}
}
void Canvas::fill_triangles(const Vec2f *triangle_positions, int num_vertices, const Gradient &gradient)
{
if (num_vertices)
{
std::vector<Colorf> colors;
Canvas_Impl::get_gradient_colors(triangle_positions, num_vertices, gradient, colors);
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, triangle_positions, &colors[0], num_vertices);
}
}
void Canvas::fill_triangle(const Pointf &a, const Pointf &b, const Pointf &c, const Colorf &color)
{
Vec2f positions[3] =
{
Vec2f(a.x, a.y),
Vec2f(b.x, b.y),
Vec2f(c.x, c.y)
};
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, positions, color, 3);
}
void Font_DrawScaled::draw_text(Canvas &canvas, const Pointf &position, const std::string &text, const Colorf &color, float line_spacing)
{
float offset_x = 0;
float offset_y = 0;
UTF8_Reader reader(text.data(), text.length());
RenderBatchTriangle *batcher = canvas.impl->batcher.get_triangle_batcher();
const Mat4f original_transform = canvas.get_transform();
clan::Mat4f scale_matrix = clan::Mat4f::scale(scaled_height, scaled_height, scaled_height);
Sizef advance;
while (!reader.is_end())
{
unsigned int glyph = reader.get_char();
reader.next();
if (glyph == '\n')
{
offset_x = 0;
offset_y += line_spacing * scaled_height;
continue;
}
canvas.set_transform(original_transform * Mat4f::translate(position.x + offset_x, position.y + offset_y, 0) * scale_matrix);
Font_TextureGlyph *gptr = glyph_cache->get_glyph(canvas, font_engine, glyph);
if (gptr)
{
if (!gptr->texture.is_null())
{
float xp = gptr->offset.x;
float yp = gptr->offset.y;
Rectf dest_size(xp, yp, gptr->size);
batcher->draw_image(canvas, gptr->geometry, dest_size, color, gptr->texture);
}
offset_x += gptr->metrics.advance.width * scaled_height;
offset_y += gptr->metrics.advance.height * scaled_height;
}
}
canvas.set_transform(original_transform);
}
void GlyphCache::draw_text(FontEngine *font_engine, Canvas &canvas, float xpos, float ypos, const std::string &text, const Colorf &color)
{
std::string::size_type string_length = text.length();
if (string_length==0)
{
return;
}
RenderBatchTriangle *batcher = canvas.impl->batcher.get_triangle_batcher();
GraphicContext &gc = canvas.get_gc();
// Scan the string
UTF8_Reader reader(text.data(), text.length());
while(!reader.is_end())
{
unsigned int glyph = reader.get_char();
reader.next();
Font_TextureGlyph *gptr = get_glyph(font_engine, gc, glyph);
if (gptr == NULL) continue;
if (!gptr->texture.is_null())
{
float xp = xpos + gptr->offset.x;
float yp = ypos + gptr->offset.y;
Rectf dest_size(xp, yp, Sizef(gptr->geometry.get_size()));
if (enable_subpixel)
{
batcher->draw_glyph_subpixel(canvas, gptr->geometry, dest_size, color, gptr->texture);
}else
{
batcher->draw_image(canvas, gptr->geometry, dest_size, color, gptr->texture);
}
}
xpos += gptr->increment.x;
ypos += gptr->increment.y;
}
}
void Sprite_Impl::draw(Canvas &canvas, const Rect &p_src, const Pointf &p_dest, const Pointf &p_scale)
{
SpriteFrame &frame = frames[current_frame];
// Find size of surface:
float src_width = (float) p_src.get_width();
float src_height = (float) p_src.get_height();
// Calculate translation hotspot
Pointf target_translation_hotspot = calc_hotspot(
translation_origin,
(float) (translation_hotspot.x + frame.offset.x),
(float) (translation_hotspot.y + frame.offset.y),
src_width,
src_height);
// Calculate rotation hotspot:
Pointf target_rotation_hotspot = calc_hotspot(
rotation_origin,
(float) (rotation_hotspot.x + frame.offset.x),
(float) (rotation_hotspot.y + frame.offset.y),
src_width,
src_height);
// Find top left point of destination rectangle and map rotation hotspot to screen coordinates:
float destWidth = src_width * p_scale.x;
float destHeight = src_height * p_scale.y;
float pixDestX = p_dest.x -target_translation_hotspot.x * p_scale.x;
float pixDestY = p_dest.y -target_translation_hotspot.y * p_scale.y;
target_rotation_hotspot.x = float(pixDestX + target_rotation_hotspot.x * p_scale.x);
target_rotation_hotspot.y = float(pixDestY + target_rotation_hotspot.y * p_scale.y);
// Calculate unit vectors for rotated surface:
// (cached for speed reasons)
static float vect_rotate_x[2] = { 1.0f, 0.0f };
static float vect_rotate_y[2] = { 0.0f, 1.0f };
static Angle last_angle(0, angle_radians);
Angle target_rotate_angle = angle - base_angle;
if (last_angle != target_rotate_angle)
{
float angle_degrees = target_rotate_angle.to_degrees();
if (angle_degrees == 0.0f)
{
vect_rotate_x[0] = 1.0;
vect_rotate_x[1] = 0.0;
vect_rotate_y[0] = 0.0;
vect_rotate_y[1] = 1.0;
}
else if (angle_degrees == 90.0f)
{
vect_rotate_x[0] = 0.0;
vect_rotate_x[1] = 1.0;
vect_rotate_y[0] = -1.0;
vect_rotate_y[1] = 0.0;
}
else if (angle_degrees == 180.0f)
{
vect_rotate_x[0] = -1.0;
vect_rotate_x[1] = 0.0;
vect_rotate_y[0] = 0.0;
vect_rotate_y[1] = -1.0;
}
else if (angle_degrees == 270.0f)
{
vect_rotate_x[0] = 0.0;
vect_rotate_x[1] = -1.0;
vect_rotate_y[0] = 1.0;
vect_rotate_y[1] = 0.0;
}
else
{
float angle_rad = target_rotate_angle.to_radians();
vect_rotate_x[0] = cos(angle_rad);
vect_rotate_x[1] = sin(angle_rad);
vect_rotate_y[0] = cos(PI/2+angle_rad);
vect_rotate_y[1] = sin(PI/2+angle_rad);
}
}
// Calculate final source rectangle points for render:
const Texture2D &texture = frames[current_frame].texture;
float texture_width = texture.get_width();
float texture_height = texture.get_height();
Pointf texture_position[4]; // Scaled to the range of 0.0f to 1.0f
Pointf dest_position[4];
texture_position[0].x = (((float) p_src.left) ) / texture_width;
texture_position[1].x = (((float) p_src.left+src_width) ) / texture_width;
texture_position[2].x = (((float) p_src.left) ) / texture_width;
texture_position[3].x = (((float) p_src.left+src_width) ) / texture_width;
texture_position[0].y = (((float) p_src.top) ) / texture_height;
texture_position[1].y = (((float) p_src.top) ) / texture_height;
texture_position[2].y = (((float) p_src.top+src_height) ) / texture_height;
texture_position[3].y = (((float) p_src.top+src_height) ) / texture_height;
// Calculate final destination rectangle points for surface rectangle:
if (target_rotate_angle.to_radians() == 0.0f)
{
dest_position[0].x = pixDestX;
dest_position[1].x = pixDestX+destWidth;
dest_position[2].x = pixDestX;
dest_position[3].x = pixDestX+destWidth;
dest_position[0].y = pixDestY;
dest_position[1].y = pixDestY;
dest_position[2].y = pixDestY+destHeight;
dest_position[3].y = pixDestY+destHeight;
}
else
{
// Roll
dest_position[0].x = calc_rotate_x(pixDestX, pixDestY, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[0], vect_rotate_y[0]);
dest_position[1].x = calc_rotate_x(pixDestX+destWidth, pixDestY, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[0], vect_rotate_y[0]);
dest_position[2].x = calc_rotate_x(pixDestX, pixDestY+destHeight, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[0], vect_rotate_y[0]);
dest_position[3].x = calc_rotate_x(pixDestX+destWidth, pixDestY+destHeight, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[0], vect_rotate_y[0]);
dest_position[0].y = calc_rotate_y(pixDestX, pixDestY, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[1], vect_rotate_y[1]);
dest_position[1].y = calc_rotate_y(pixDestX+destWidth, pixDestY, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[1], vect_rotate_y[1]);
dest_position[2].y = calc_rotate_y(pixDestX, pixDestY+destHeight, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[1], vect_rotate_y[1]);
dest_position[3].y = calc_rotate_y(pixDestX+destWidth, pixDestY+destHeight, target_rotation_hotspot.x, target_rotation_hotspot.y, vect_rotate_x[1], vect_rotate_y[1]);
}
RenderBatchTriangle *batcher = canvas.impl->batcher.get_triangle_batcher();
batcher->draw_sprite(canvas, texture_position, dest_position, frames[current_frame].texture, color);
}
void Canvas::fill_triangles(const Vec2f *positions, const Vec2f *texture_positions, int num_vertices, const Texture2D &texture, const Colorf *colors)
{
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangles(*this, positions, texture_positions, num_vertices, texture, colors);
}
void Canvas::fill_triangles(const Vec2f *triangle_positions, int num_vertices, const Colorf &color)
{
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill_triangle(*this, triangle_positions, color, num_vertices);
}
void Canvas::fill_circle(const Pointf ¢er, const Pointf ¢ergradient, float radius, const Gradient &gradient)
{
float offset_x = 0;
float offset_y = 0;
float rotationcount = max(5.0f, (radius - 3.0f));
float halfpi = 1.5707963267948966192313216916398f;
float turn = halfpi / rotationcount;
if(center.distance(center + centergradient) < radius)
{
offset_x = centergradient.x;
offset_y = -centergradient.y;
}
Vec4f colors[3] =
{
Vec4f(gradient.top_left.get_red(), gradient.top_left.get_green(), gradient.top_left.get_blue(), gradient.top_left.get_alpha()),
Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha()),
Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha())
};
Vec4f triangle_colors[4*3];
for (int i=0; i<3; i++)
{
triangle_colors[0*3+i] = colors[i];
triangle_colors[1*3+i] = colors[i];
triangle_colors[2*3+i] = colors[i];
triangle_colors[3*3+i] = colors[i];
}
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
for(float i = 0; i < rotationcount ; i++)
{
float pos1 = cos(i * turn);
float pos2 = sin(i * turn);
float pos3 = cos((i+1) * turn);
float pos4 = sin((i+1) * turn);
Vec2f positions[4*3] =
{
// 90 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x + ((float)radius * pos1), center.y + ((float)radius * pos2)),
Vec2f(center.x + ((float)radius * pos3), center.y + ((float)radius * pos4)),
// 0 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x + ((float)radius * pos2), center.y - ((float)radius * pos1)),
Vec2f(center.x + ((float)radius * pos4), center.y - ((float)radius * pos3)),
// 270 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x - ((float)radius * pos1), center.y - ((float)radius * pos2)),
Vec2f(center.x - ((float)radius * pos3), center.y - ((float)radius * pos4)),
// 180 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x - ((float)radius * pos2), center.y + ((float)radius * pos1)),
Vec2f(center.x - ((float)radius * pos4), center.y + ((float)radius * pos3))
};
batcher->fill_triangle(*this, positions, triangle_colors, 4*3);
}
}
void Canvas::fill_rect(float x1, float y1, float x2, float y2, const Colorf &color)
{
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
batcher->fill(*this, x1, y1, x2, y2, color);
}