void perform_rendering(VertexSource& vs)
{
pixfmt_type pixf(rbuf_window());
typedef agg::pixfmt_amask_adaptor<pixfmt_type, alpha_mask_type> pixfmt_amask_type;
typedef agg::renderer_base<pixfmt_amask_type> amask_ren_type;
pixfmt_amask_type pixfa(pixf, m_alpha_mask);
amask_ren_type rbase(pixfa);
agg::renderer_scanline_aa_solid<amask_ren_type> ren(rbase);
ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
start_timer();
m_ras.reset();
m_ras.add_path(vs);
agg::render_scanlines(m_ras, m_sl, ren);
double t1 = elapsed_time();
char buf[100];
sprintf(buf, "Render with AlphaMask: %.3fms", t1);
draw_text(250, 5, buf);
}
void roadmap_canvas_draw_multiple_circles
(int count, RoadMapGuiPoint *centers, int *radius, int filled,
int fast_draw) {
int i;
static agg::path_storage path;
for (i = 0; i < count; ++i) {
int r = radius[i];
int x = centers[i].x;
int y = centers[i].y;
agg::ellipse e( x, y, r, r);
path.concat_path(e);
if (filled) {
ras.reset();
ras.add_path(path);
ren_solid.color(CurrentPen->color);
agg::render_scanlines( ras, sl, ren_solid);
/* } else if (fast_draw) {
renderer_pr ren_pr(agg_renb);
agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
ren_pr.line_color(CurrentPen->color);
ras_line.add_path(path);
*/
} else {
raso.add_path(path);
}
path.remove_all ();
}
}
virtual void on_draw()
{
pixfmt pixf(rbuf_window());
renderer_base rb(pixf);
renderer_solid rs(rb);
rb.clear(agg::rgba(1, 1, 1));
// When Gamma changes rebuild the gamma and gradient LUTs
//------------------
if(m_old_gamma != m_gamma.value())
{
m_gamma_lut.gamma(m_gamma.value());
build_gradient_lut();
m_old_gamma = m_gamma.value();
}
// Gradient center. All gradient functions assume the
// center being in the origin (0,0) and you can't
// change it. But you can apply arbitrary transformations
// to the gradient (see below).
//------------------
double cx = initial_width() / 2;
double cy = initial_height() / 2;
double r = 100;
// Focal center. Defined in the gradient coordinates,
// that is, with respect to the origin (0,0)
//------------------
double fx = m_mouse_x - cx;
double fy = m_mouse_y - cy;
gradient_func_type gradient_func(r, fx, fy);
gradient_adaptor_type gradient_adaptor(gradient_func);
agg::trans_affine gradient_mtx;
// Making the affine matrix. Move to (cx,cy),
// apply the resizing transformations and invert
// the matrix. Gradients and images always assume the
// inverse transformations.
//------------------
gradient_mtx.translate(cx, cy);
gradient_mtx *= trans_affine_resizing();
gradient_mtx.invert();
interpolator_type span_interpolator(gradient_mtx);
span_gradient_type span_gradient(span_interpolator,
gradient_adaptor,
m_gradient_lut,
0, r);
// Form the simple rectangle
//------------------
m_rasterizer.reset();
m_rasterizer.move_to_d(0,0);
m_rasterizer.line_to_d(width(), 0);
m_rasterizer.line_to_d(width(), height());
m_rasterizer.line_to_d(0, height());
// Render the gradient to the whole screen and measure the time
//------------------
start_timer();
agg::render_scanlines_aa(m_rasterizer, m_scanline, rb, m_alloc, span_gradient);
double tm = elapsed_time();
// Draw the transformed circle that shows the gradient boundary
//------------------
agg::ellipse e(cx, cy, r, r);
agg::conv_stroke<agg::ellipse> estr(e);
agg::conv_transform<
agg::conv_stroke<
agg::ellipse> > etrans(estr, trans_affine_resizing());
m_rasterizer.add_path(etrans);
agg::render_scanlines_aa_solid(m_rasterizer, m_scanline, rb, agg::rgba(1,1,1));
// Show the gradient time
//------------------
char buf[64];
agg::gsv_text t;
t.size(10.0);
agg::conv_stroke<agg::gsv_text> pt(t);
pt.width(1.5);
sprintf(buf, "%3.2f ms", tm);
t.start_point(10.0, 35.0);
t.text(buf);
m_rasterizer.add_path(pt);
agg::render_scanlines_aa_solid(m_rasterizer, m_scanline, rb, agg::rgba(0,0,0));
#if !LINEAR_RGB
// Show the controls
//------------------
agg::render_ctrl(m_rasterizer, m_scanline, rb, m_gamma);
// Apply the inverse gamma to the whole buffer
// (transform the colors to the perceptually uniform space)
//------------------
pixf.apply_gamma_inv(m_gamma_lut);
#endif
}
virtual void on_draw()
{
pixfmt pixf(rbuf_window());
pixfmt_pre pixf_pre(rbuf_window());
renderer_base rb(pixf);
renderer_base_pre rb_pre(pixf_pre);
if(!m_test_flag)
{
rb.clear(agg::rgba(1, 1, 1));
}
if(m_trans_type.cur_item() == 0)
{
// For the affine parallelogram transformations we
// calculate the 4-th (implicit) point of the parallelogram
m_quad.xn(3) = m_quad.xn(0) + (m_quad.xn(2) - m_quad.xn(1));
m_quad.yn(3) = m_quad.yn(0) + (m_quad.yn(2) - m_quad.yn(1));
}
if(!m_test_flag)
{
//--------------------------
// Render the "quad" tool and controls
g_rasterizer.add_path(m_quad);
agg::render_scanlines_aa_solid(g_rasterizer, g_scanline, rb, agg::rgba(0, 0.3, 0.5, 0.6));
//--------------------------
agg::render_ctrl(g_rasterizer, g_scanline, rb, m_trans_type);
}
// Prepare the polygon to rasterize. Here we need to fill
// the destination (transformed) polygon.
g_rasterizer.clip_box(0, 0, width(), height());
g_rasterizer.reset();
g_rasterizer.move_to_d(m_quad.xn(0), m_quad.yn(0));
g_rasterizer.line_to_d(m_quad.xn(1), m_quad.yn(1));
g_rasterizer.line_to_d(m_quad.xn(2), m_quad.yn(2));
g_rasterizer.line_to_d(m_quad.xn(3), m_quad.yn(3));
typedef agg::span_allocator<color_type> span_alloc_type;
span_alloc_type sa;
agg::image_filter<agg::image_filter_hanning> filter;
typedef agg::wrap_mode_reflect_auto_pow2 remainder_type;
typedef agg::image_accessor_wrap<pixfmt,
remainder_type,
remainder_type> img_source_type;
pixfmt img_pixf(rbuf_img(0));
img_source_type img_src(img_pixf);
enum subdiv_shift_e { subdiv_shift = 2 };
switch(m_trans_type.cur_item())
{
case 0:
{
// Note that we consruct an affine matrix that transforms
// a parallelogram to a rectangle, i.e., it's inverted.
// It's actually the same as:
// tr(g_x1, g_y1, g_x2, g_y2, m_triangle.polygon());
// tr.invert();
agg::trans_affine tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
// Also note that we can use the linear interpolator instead of
// arbitrary span_interpolator_trans. It works much faster,
// but the transformations must be linear and parellel.
typedef agg::span_interpolator_linear<agg::trans_affine> interpolator_type;
interpolator_type interpolator(tr);
typedef span_image_filter_2x2<img_source_type,
interpolator_type> span_gen_type;
span_gen_type sg(img_src, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
break;
}
case 1:
{
agg::trans_bilinear tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
if(tr.is_valid())
{
typedef agg::span_interpolator_linear<agg::trans_bilinear> interpolator_type;
interpolator_type interpolator(tr);
typedef span_image_filter_2x2<img_source_type,
interpolator_type> span_gen_type;
span_gen_type sg(img_src, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
case 2:
{
agg::trans_perspective tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
if(tr.is_valid())
{
typedef agg::span_interpolator_linear_subdiv<agg::trans_perspective, 8> interpolator_type;
interpolator_type interpolator(tr);
typedef span_image_filter_2x2<img_source_type,
interpolator_type> span_gen_type;
span_gen_type sg(img_src, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
}
}
void roadmap_canvas_draw_formated_string_angle (const RoadMapGuiPoint *position,
RoadMapGuiPoint *center,
int angle, int size,
int font_type,
const char *text)
{
font_manager_type *fman;
font_manager_type *image_fman;
font_engine_type *feng;
font_engine_type *image_feng;
if ((font_type & FONT_TYPE_NORMAL) && (!RoadMapCanvasNormalFontLoaded))
font_type = FONT_TYPE_BOLD;
if (font_type & FONT_TYPE_NORMAL){
fman = &m_fman_nor;
feng = &m_feng_nor;
image_feng = &m_image_feng_nor;
image_fman = &m_image_fman_nor;
}
else{
fman = &m_fman;
feng = &m_feng;
image_feng = &m_image_feng;
image_fman = &m_image_fman;
}
if ((font_type & FONT_TYPE_BOLD) && (RoadMapCanvasFontLoaded != 1)) return;
dbg_time_start(DBG_TIME_TEXT_FULL);
dbg_time_start(DBG_TIME_TEXT_CNV);
wchar_t wstr[255];
int length = roadmap_canvas_agg_to_wchar (text, wstr, 255);
if (length <=0) return;
#ifdef USE_FRIBIDI
wchar_t *bidi_text = bidi_string(wstr);
const wchar_t* p = bidi_text;
#else
const wchar_t* p = wstr;
#endif
ren_solid.color(CurrentPen->color);
dbg_time_end(DBG_TIME_TEXT_CNV);
double x = 0;
double y = 0;
if (size < 0) size = 15;
if ( roadmap_screen_is_hd_screen() )
{
size = (int)(size * CANVAS_HD_FONT_FACTOR);
}
else{
#ifdef _WIN32
size = (int) (size * 0.9);
#endif
}
if (angle == 0) {
/* Use faster drawing for text with no angle */
x = position->x;
y = position->y;
// ren_solid.color(agg::rgba8(0, 0, 0));
image_feng->height(size);
image_feng->width(size);
while(*p) {
const agg::glyph_cache* glyph = image_fman->glyph(*p);
if(glyph) {
image_fman->init_embedded_adaptors(glyph, x, y);
agg::render_scanlines(image_fman->gray8_adaptor(),
image_fman->gray8_scanline(),
ren_solid);
// increment pen position
x += glyph->advance_x;
y += glyph->advance_y;
}
++p;
}
}
else{
feng->height(size);
feng->width(size);
}
while(*p) {
dbg_time_start(DBG_TIME_TEXT_ONE_LETTER);
dbg_time_start(DBG_TIME_TEXT_GET_GLYPH);
const agg::glyph_cache* glyph = fman->glyph(*p);
dbg_time_end(DBG_TIME_TEXT_GET_GLYPH);
if(glyph) {
fman->init_embedded_adaptors(glyph, x, y);
//agg::conv_curve<font_manager_type::path_adaptor_type> stroke(fman->path_adaptor());
agg::trans_affine mtx;
if (abs(angle) > 0) {
mtx *= agg::trans_affine_rotation(agg::deg2rad(angle));
}
mtx *= agg::trans_affine_translation(position->x, position->y);
agg::conv_transform<font_manager_type::path_adaptor_type> tr(fman->path_adaptor(), mtx);
agg::conv_curve<agg::conv_transform<font_manager_type::path_adaptor_type> > fill(tr);
//agg::conv_stroke<
//agg::conv_curve<agg::conv_transform<font_manager_type::path_adaptor_type> > >
//stroke(fill);
//agg::conv_contour<agg::conv_transform<font_manager_type::path_adaptor_type> >contour(tr);
//contour.width(2);
//agg::conv_stroke< agg::conv_contour<agg::conv_transform<font_manager_type::path_adaptor_type> > > stroke(contour);
//agg::conv_stroke< agg::conv_transform<font_manager_type::path_adaptor_type> > stroke(tr);
dbg_time_start(DBG_TIME_TEXT_ONE_RAS);
#ifdef WIN32_PROFILE
ResumeCAPAll();
#endif
ras.reset();
ras.add_path(tr);
agg::render_scanlines(ras, sl, ren_solid);
//ras.add_path(fill);
//ras.add_path(stroke);
//ren_solid.color(agg::rgba8(255, 255, 255));
//agg::render_scanlines(ras, sl, ren_solid);
//ras.add_path(tr);
//ren_solid.color(agg::rgba8(0, 0, 0));
//agg::render_scanlines(ras, sl, ren_solid);
#ifdef WIN32_PROFILE
SuspendCAPAll();
#endif
dbg_time_end(DBG_TIME_TEXT_ONE_RAS);
// increment pen position
x += glyph->advance_x;
y += glyph->advance_y;
dbg_time_end(DBG_TIME_TEXT_ONE_LETTER);
}
++p;
}
#ifdef USE_FRIBIDI
free(bidi_text);
#endif
dbg_time_end(DBG_TIME_TEXT_FULL);
}
void roadmap_canvas_draw_multiple_lines (int count, int *lines,
RoadMapGuiPoint *points, int fast_draw) {
int i;
int count_of_points;
dbg_time_start(DBG_TIME_DRAW_LINES);
#ifdef WIN32_PROFILE
ResumeCAPAll();
#endif
#ifdef _WIN32_
if (fast_draw) {
roadmap_canvas_native_draw_multiple_lines (count, lines, points,
CurrentPen->color.r, CurrentPen->color.g, CurrentPen->color.b,
CurrentPen->thickness);
return;
}
#endif
if (!fast_draw) {
raso.round_cap(true);
raso.line_join(agg::outline_miter_accurate_join);
} else {
raso.round_cap(false);
raso.line_join(agg::outline_no_join);
}
// raso.accurate_join(true);
static agg::path_storage path;
for (i = 0; i < count; ++i) {
int first = 1;
count_of_points = *lines;
if (count_of_points < 2) continue;
dbg_time_start(DBG_TIME_CREATE_PATH);
for (int j=0; j<count_of_points; j++) {
if (first) {
first = 0;
path.move_to(points->x, points->y);
} else {
path.line_to(points->x, points->y);
}
points++;
}
dbg_time_end(DBG_TIME_CREATE_PATH);
dbg_time_start(DBG_TIME_ADD_PATH);
#if 0
if (fast_draw) {
renderer_pr ren_pr(agg_renb);
agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
ren_pr.line_color(CurrentPen->color);
ras_line.add_path(path);
} else {
#endif
raso.add_path(path);
//}
path.remove_all ();
dbg_time_end(DBG_TIME_ADD_PATH);
lines += 1;
}
#ifdef WIN32_PROFILE
SuspendCAPAll();
#endif
return;
dbg_time_end(DBG_TIME_DRAW_LINES);
}
void roadmap_canvas_draw_multiple_polygons
(int count, int *polygons, RoadMapGuiPoint *points, int filled,
int fast_draw) {
int i;
int count_of_points;
static agg::path_storage path;
for (i = 0; i < count; ++i) {
count_of_points = *polygons;
int first = 1;
for (int j=0; j<count_of_points; j++) {
if (first) {
first = 0;
path.move_to(points->x, points->y);
} else {
path.line_to(points->x, points->y);
}
points++;
}
path.close_polygon();
if (filled) {
ras.reset();
ras.add_path(path);
ren_solid.color(CurrentPen->color);
agg::render_scanlines( ras, sl, ren_solid);
} else if (fast_draw) {
renderer_pr ren_pr(agg_renb);
agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
ren_pr.line_color(CurrentPen->color);
ras_line.add_path(path);
} else {
raso.add_path(path);
}
path.remove_all ();
polygons += 1;
}
}
unsigned render()
{
pixfmt_type pf(rbuf_window());
agg::renderer_base<pixfmt_type> rb(pf);
agg::renderer_scanline_aa_solid<agg::renderer_base<pixfmt_type> > ren(rb);
switch(m_polygons.cur_item())
{
case 0:
{
//------------------------------------
// Two simple paths
//
agg::path_storage ps1;
agg::path_storage ps2;
double x = m_x - initial_width()/2 + 100;
double y = m_y - initial_height()/2 + 100;
ps1.move_to(x+140, y+145);
ps1.line_to(x+225, y+44);
ps1.line_to(x+296, y+219);
ps1.close_polygon();
ps1.line_to(x+226, y+289);
ps1.line_to(x+82, y+292);
ps1.move_to(x+220, y+222);
ps1.line_to(x+363, y+249);
ps1.line_to(x+265, y+331);
ps1.move_to(x+242, y+243);
ps1.line_to(x+268, y+309);
ps1.line_to(x+325, y+261);
ps1.move_to(x+259, y+259);
ps1.line_to(x+273, y+288);
ps1.line_to(x+298, y+266);
ps2.move_to(100+32, 100+77);
ps2.line_to(100+473, 100+263);
ps2.line_to(100+351, 100+290);
ps2.line_to(100+354, 100+374);
m_ras.reset();
m_ras.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
m_ras.reset();
m_ras.add_path(ps2);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
generate_alpha_mask(ps1);
perform_rendering(ps2);
}
break;
case 1:
{
//------------------------------------
// Closed stroke
//
agg::path_storage ps1;
agg::path_storage ps2;
agg::conv_stroke<agg::path_storage> stroke(ps2);
stroke.width(10.0);
double x = m_x - initial_width()/2 + 100;
double y = m_y - initial_height()/2 + 100;
ps1.move_to(x+140, y+145);
ps1.line_to(x+225, y+44);
ps1.line_to(x+296, y+219);
ps1.close_polygon();
ps1.line_to(x+226, y+289);
ps1.line_to(x+82, y+292);
ps1.move_to(x+220-50, y+222);
ps1.line_to(x+265-50, y+331);
ps1.line_to(x+363-50, y+249);
ps1.close_polygon(agg::path_flags_ccw);
ps2.move_to(100+32, 100+77);
ps2.line_to(100+473, 100+263);
ps2.line_to(100+351, 100+290);
ps2.line_to(100+354, 100+374);
ps2.close_polygon();
m_ras.reset();
m_ras.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
m_ras.reset();
m_ras.add_path(stroke);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
generate_alpha_mask(ps1);
perform_rendering(stroke);
}
break;
case 2:
{
//------------------------------------
// Great Britain and Arrows
//
agg::path_storage gb_poly;
agg::path_storage arrows;
make_gb_poly(gb_poly);
make_arrows(arrows);
agg::trans_affine mtx1;
agg::trans_affine mtx2;
mtx1 *= agg::trans_affine_translation(-1150, -1150);
mtx1 *= agg::trans_affine_scaling(2.0);
mtx2 = mtx1;
mtx2 *= agg::trans_affine_translation(m_x - initial_width()/2,
m_y - initial_height()/2);
agg::conv_transform<agg::path_storage> trans_gb_poly(gb_poly, mtx1);
agg::conv_transform<agg::path_storage> trans_arrows(arrows, mtx2);
m_ras.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
m_ras.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(m_ras, m_sl, ren);
m_ras.add_path(trans_arrows);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
generate_alpha_mask(trans_gb_poly);
perform_rendering(trans_arrows);
}
break;
case 3:
{
//------------------------------------
// Great Britain and a Spiral
//
spiral sp(m_x, m_y, 10, 150, 30, 0.0);
agg::conv_stroke<spiral> stroke(sp);
stroke.width(15.0);
agg::path_storage gb_poly;
make_gb_poly(gb_poly);
agg::trans_affine mtx;
mtx *= agg::trans_affine_translation(-1150, -1150);
mtx *= agg::trans_affine_scaling(2.0);
agg::conv_transform<agg::path_storage> trans_gb_poly(gb_poly, mtx);
m_ras.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
m_ras.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(m_ras, m_sl, ren);
m_ras.add_path(stroke);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
generate_alpha_mask(trans_gb_poly);
perform_rendering(stroke);
}
break;
case 4:
{
//------------------------------------
// Spiral and glyph
//
spiral sp(m_x, m_y, 10, 150, 30, 0.0);
agg::conv_stroke<spiral> stroke(sp);
stroke.width(15.0);
agg::path_storage glyph;
glyph.move_to(28.47, 6.45);
glyph.curve3(21.58, 1.12, 19.82, 0.29);
glyph.curve3(17.19, -0.93, 14.21, -0.93);
glyph.curve3(9.57, -0.93, 6.57, 2.25);
glyph.curve3(3.56, 5.42, 3.56, 10.60);
glyph.curve3(3.56, 13.87, 5.03, 16.26);
glyph.curve3(7.03, 19.58, 11.99, 22.51);
glyph.curve3(16.94, 25.44, 28.47, 29.64);
glyph.line_to(28.47, 31.40);
glyph.curve3(28.47, 38.09, 26.34, 40.58);
glyph.curve3(24.22, 43.07, 20.17, 43.07);
glyph.curve3(17.09, 43.07, 15.28, 41.41);
glyph.curve3(13.43, 39.75, 13.43, 37.60);
glyph.line_to(13.53, 34.77);
glyph.curve3(13.53, 32.52, 12.38, 31.30);
glyph.curve3(11.23, 30.08, 9.38, 30.08);
glyph.curve3(7.57, 30.08, 6.42, 31.35);
glyph.curve3(5.27, 32.62, 5.27, 34.81);
glyph.curve3(5.27, 39.01, 9.57, 42.53);
glyph.curve3(13.87, 46.04, 21.63, 46.04);
glyph.curve3(27.59, 46.04, 31.40, 44.04);
glyph.curve3(34.28, 42.53, 35.64, 39.31);
glyph.curve3(36.52, 37.21, 36.52, 30.71);
glyph.line_to(36.52, 15.53);
glyph.curve3(36.52, 9.13, 36.77, 7.69);
glyph.curve3(37.01, 6.25, 37.57, 5.76);
glyph.curve3(38.13, 5.27, 38.87, 5.27);
glyph.curve3(39.65, 5.27, 40.23, 5.62);
glyph.curve3(41.26, 6.25, 44.19, 9.18);
glyph.line_to(44.19, 6.45);
glyph.curve3(38.72, -0.88, 33.74, -0.88);
glyph.curve3(31.35, -0.88, 29.93, 0.78);
glyph.curve3(28.52, 2.44, 28.47, 6.45);
glyph.close_polygon();
glyph.move_to(28.47, 9.62);
glyph.line_to(28.47, 26.66);
glyph.curve3(21.09, 23.73, 18.95, 22.51);
glyph.curve3(15.09, 20.36, 13.43, 18.02);
glyph.curve3(11.77, 15.67, 11.77, 12.89);
glyph.curve3(11.77, 9.38, 13.87, 7.06);
glyph.curve3(15.97, 4.74, 18.70, 4.74);
glyph.curve3(22.41, 4.74, 28.47, 9.62);
glyph.close_polygon();
agg::trans_affine mtx;
mtx *= agg::trans_affine_scaling(4.0);
mtx *= agg::trans_affine_translation(220, 200);
agg::conv_transform<agg::path_storage> trans(glyph, mtx);
agg::conv_curve<agg::conv_transform<agg::path_storage> > curve(trans);
m_ras.reset();
m_ras.add_path(stroke);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
m_ras.reset();
m_ras.add_path(curve);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(m_ras, m_sl, ren);
generate_alpha_mask(stroke);
perform_rendering(curve);
}
break;
}
return 0;
}
virtual void on_draw()
{
if(m_gamma.value() != m_old_gamma)
{
m_gamma_lut.gamma(m_gamma.value());
load_img(0, "spheres");
pixfmt pixf(rbuf_img(0));
pixf.apply_gamma_dir(m_gamma_lut);
m_old_gamma = m_gamma.value();
}
pixfmt pixf(rbuf_window());
pixfmt_pre pixf_pre(rbuf_window());
renderer_base rb(pixf);
renderer_base_pre rb_pre(pixf_pre);
renderer_solid r(rb);
rb.clear(agg::rgba(1, 1, 1));
if(m_trans_type.cur_item() < 2)
{
// For the affine parallelogram transformations we
// calculate the 4-th (implicit) point of the parallelogram
m_quad.xn(3) = m_quad.xn(0) + (m_quad.xn(2) - m_quad.xn(1));
m_quad.yn(3) = m_quad.yn(0) + (m_quad.yn(2) - m_quad.yn(1));
}
//--------------------------
// Render the "quad" tool and controls
g_rasterizer.add_path(m_quad);
r.color(agg::rgba(0, 0.3, 0.5, 0.1));
agg::render_scanlines(g_rasterizer, g_scanline, r);
// Prepare the polygon to rasterize. Here we need to fill
// the destination (transformed) polygon.
g_rasterizer.clip_box(0, 0, width(), height());
g_rasterizer.reset();
int b = 0;
g_rasterizer.move_to_d(m_quad.xn(0)-b, m_quad.yn(0)-b);
g_rasterizer.line_to_d(m_quad.xn(1)+b, m_quad.yn(1)-b);
g_rasterizer.line_to_d(m_quad.xn(2)+b, m_quad.yn(2)+b);
g_rasterizer.line_to_d(m_quad.xn(3)-b, m_quad.yn(3)+b);
typedef agg::span_allocator<color_type> span_alloc_type;
span_alloc_type sa;
agg::image_filter_bilinear filter_kernel;
agg::image_filter_lut filter(filter_kernel, true);
pixfmt pixf_img(rbuf_img(0));
typedef agg::image_accessor_clone<pixfmt> source_type;
source_type source(pixf_img);
start_timer();
switch(m_trans_type.cur_item())
{
case 0:
{
agg::trans_affine tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
typedef agg::span_interpolator_linear<agg::trans_affine> interpolator_type;
interpolator_type interpolator(tr);
typedef image_filter_2x2_type<source_type,
interpolator_type> span_gen_type;
span_gen_type sg(source, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
break;
}
case 1:
{
agg::trans_affine tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
typedef agg::span_interpolator_linear<agg::trans_affine> interpolator_type;
typedef image_resample_affine_type<source_type> span_gen_type;
interpolator_type interpolator(tr);
span_gen_type sg(source, interpolator, filter);
sg.blur(m_blur.value());
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
break;
}
case 2:
{
agg::trans_perspective tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
if(tr.is_valid())
{
typedef agg::span_interpolator_linear_subdiv<agg::trans_perspective> interpolator_type;
interpolator_type interpolator(tr);
typedef image_filter_2x2_type<source_type,
interpolator_type> span_gen_type;
span_gen_type sg(source, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
case 3:
{
agg::trans_perspective tr(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
if(tr.is_valid())
{
typedef agg::span_interpolator_trans<agg::trans_perspective> interpolator_type;
interpolator_type interpolator(tr);
typedef image_filter_2x2_type<source_type,
interpolator_type> span_gen_type;
span_gen_type sg(source, interpolator, filter);
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
case 4:
{
typedef agg::span_interpolator_persp_lerp<> interpolator_type;
typedef agg::span_subdiv_adaptor<interpolator_type> subdiv_adaptor_type;
interpolator_type interpolator(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
subdiv_adaptor_type subdiv_adaptor(interpolator);
if(interpolator.is_valid())
{
typedef image_resample_type<source_type,
subdiv_adaptor_type> span_gen_type;
span_gen_type sg(source, subdiv_adaptor, filter);
sg.blur(m_blur.value());
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
case 5:
{
typedef agg::span_interpolator_persp_exact<> interpolator_type;
typedef agg::span_subdiv_adaptor<interpolator_type> subdiv_adaptor_type;
interpolator_type interpolator(m_quad.polygon(), g_x1, g_y1, g_x2, g_y2);
subdiv_adaptor_type subdiv_adaptor(interpolator);
if(interpolator.is_valid())
{
typedef image_resample_type<source_type,
subdiv_adaptor_type> span_gen_type;
span_gen_type sg(source, subdiv_adaptor, filter);
sg.blur(m_blur.value());
agg::render_scanlines_aa(g_rasterizer, g_scanline, rb_pre, sa, sg);
}
break;
}
}
double tm = elapsed_time();
pixf.apply_gamma_inv(m_gamma_lut);
char buf[64];
agg::gsv_text t;
t.size(10.0);
agg::conv_stroke<agg::gsv_text> pt(t);
pt.width(1.5);
sprintf(buf, "%3.2f ms", tm);
t.start_point(10.0, 70.0);
t.text(buf);
g_rasterizer.add_path(pt);
r.color(agg::rgba(0,0,0));
agg::render_scanlines(g_rasterizer, g_scanline, r);
//--------------------------
agg::render_ctrl(g_rasterizer, g_scanline, rb, m_trans_type);
agg::render_ctrl(g_rasterizer, g_scanline, rb, m_gamma);
agg::render_ctrl(g_rasterizer, g_scanline, rb, m_blur);
}