/* === S Y N F I G ========================================================= */
/*! \file plant.cpp
-** \brief Template
+** \brief Implementation of the "Plant" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
SYNFIG_LAYER_INIT(Plant);
SYNFIG_LAYER_SET_NAME(Plant,"plant");
-SYNFIG_LAYER_SET_LOCAL_NAME(Plant,_("Plant"));
-SYNFIG_LAYER_SET_CATEGORY(Plant,_("Other"));
-SYNFIG_LAYER_SET_VERSION(Plant,"0.1");
+SYNFIG_LAYER_SET_LOCAL_NAME(Plant,N_("Plant"));
+SYNFIG_LAYER_SET_CATEGORY(Plant,N_("Other"));
+SYNFIG_LAYER_SET_VERSION(Plant,"0.2");
SYNFIG_LAYER_SET_CVS_ID(Plant,"$Id$");
/* === P R O C E D U R E S ================================================= */
Plant::Plant():
+ offset(0,0),
split_angle(Angle::deg(10)),
gravity(0,-0.1),
velocity(0.3),
- perp_velocity(0.3),
+ perp_velocity(0.0),
step(0.01),
- sprouts(10)
+ sprouts(10),
+ version(version__),
+ use_width(true)
{
bounding_rect=Rect::zero();
random_factor=0.2;
needs_sync_=true;
sync();
size_as_alpha=false;
+ reverse=true;
}
void
{
Mutex::Lock lock(mutex);
if (!needs_sync_) return;
+ time_t start_time; time(&start_time);
particle_list.clear();
bounding_rect=Rect::zero();
// loop through the bline; seg counts the blines as we do so; stop before iter is the last bline in the list
for(;next!=bline.end();iter=next++,seg++)
{
+ float iterw=iter->get_width(); // the width value of the iter vertex
+ float nextw=next->get_width(); // the width value of the next vertex
+ float width; // the width at an intermediate position
curve.p1()=iter->get_vertex();
curve.t1()=iter->get_tangent2();
curve.p2()=next->get_vertex();
Real f;
int i=0, branch_count = 0, steps = round_to_int(1.0/step);
+ if (steps < 1) steps = 1;
for(f=0.0;f<1.0;f+=step,i++)
{
Point point(curve(f));
bounding_rect.expand(point);
- Real stunt_growth(random_factor * random(Random::SMOOTH_COSINE,i,f+seg,0.0f,0.0f)/2.0+0.5);
+ Real stunt_growth(random_factor * (random(Random::SMOOTH_COSINE,i,f+seg,0.0f,0.0f)/2.0+0.5));
stunt_growth*=stunt_growth;
if((((i+1)*sprouts + steps/2) / steps) > branch_count) {
branch_velocity[0] += random_factor * random(Random::SMOOTH_COSINE, 1, f*splits, 0.0f, 0.0f);
branch_velocity[1] += random_factor * random(Random::SMOOTH_COSINE, 2, f*splits, 0.0f, 0.0f);
+ if (use_width)
+ {
+ width = iterw+(nextw-iterw)*f; // calculate the width based on the current position
+
+ branch_velocity[0] *= width; // scale the velocity accordingly to the current width
+ branch_velocity[1] *= width;
+ }
+
branch_count++;
branch(i, 0, 0, // time
stunt_growth, // stunt growth
}
}
+ time_t end_time; time(&end_time);
+ if (end_time-start_time > 4)
+ synfig::info("Plant::sync() constructed %d particles in %d seconds\n",
+ particle_list.size(), int(end_time-start_time));
needs_sync_=false;
}
needs_sync_=true;
return true;
}
+ IMPORT(offset);
IMPORT_PLUS(split_angle,needs_sync_=true);
IMPORT_PLUS(gravity,needs_sync_=true);
IMPORT_PLUS(gradient,needs_sync_=true);
IMPORT_PLUS(velocity,needs_sync_=true);
IMPORT_PLUS(perp_velocity,needs_sync_=true);
- IMPORT_PLUS(step,needs_sync_=true);
- IMPORT_PLUS(splits,needs_sync_=true);
+ IMPORT_PLUS(step,{
+ needs_sync_ = true;
+ if (step <= 0)
+ step=0.01; // user is probably clueless - give a good default
+ else if (step < 0.00001)
+ step=0.00001; // 100K should be enough for anyone
+ else if (step > 1)
+ step=1;
+ });
+ IMPORT_PLUS(splits,{
+ needs_sync_=true;
+ if (splits < 1)
+ splits = 1;
+ });
IMPORT_PLUS(sprouts,needs_sync_=true);
IMPORT_PLUS(random_factor,needs_sync_=true);
IMPORT_PLUS(drag,needs_sync_=true);
IMPORT(size);
IMPORT(size_as_alpha);
+ IMPORT(reverse);
return Layer_Composite::set_param(param,value);
}
if(param=="seed")
return random.get_seed();
EXPORT(bline);
+ EXPORT(offset);
EXPORT(split_angle);
EXPORT(gravity);
EXPORT(velocity);
EXPORT(size);
EXPORT(size_as_alpha);
+ EXPORT(reverse);
EXPORT_NAME();
- EXPORT_VERSION();
+
+ if(param=="Version" || param=="version" || param=="version__")
+ return version;
return Layer_Composite::get_param(param);
}
ret.push_back(ParamDesc("bline")
.set_local_name(_("Vertices"))
.set_description(_("A list of BLine Points"))
- //.set_origin("offset")
+ .set_origin("offset")
//.set_scalar("width")
);
+ ret.push_back(ParamDesc("offset")
+ .set_local_name(_("Offset"))
+ );
+
ret.push_back(ParamDesc("gradient")
.set_local_name(_("Gradient"))
.set_description(_("Gradient to be used for coloring the plant"))
.set_description(_("If enabled, the alpha channel from the gradient is multiplied by the stem size, and an alpha of 1.0 is used when rendering"))
);
+ ret.push_back(ParamDesc("reverse")
+ .set_local_name(_("Reverse"))
+ .set_description(_("If enabled, render the plant in the opposite direction"))
+ );
+
ret.push_back(ParamDesc("step")
.set_local_name(_("Step"))
.set_description(_("Measure of the distance between points when rendering"))
}
bool
+Plant::set_version(const String &ver)
+{
+ version = ver;
+
+ if (version == "0.1")
+ use_width = false;
+
+ return true;
+}
+
+bool
Plant::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
bool ret(context.accelerated_render(surface,quality,renddesc,cb));
dest_surface.set_wh(surface->get_w(),surface->get_h());
dest_surface.clear();
- const Point tl(renddesc.get_tl());
- const Point br(renddesc.get_br());
+ const Point tl(renddesc.get_tl()-offset);
+ const Point br(renddesc.get_br()-offset);
const int w(renddesc.get_w());
const int h(renddesc.get_h());
+ const int surface_width(surface->get_w());
+ const int surface_height(surface->get_h());
+
// Width and Height of a pixel
const Real pw = (br[0] - tl[0]) / w;
const Real ph = (br[1] - tl[1]) / h;
+ if (isinf(pw) || isinf(ph))
+ return true;
+
if(needs_sync_==true)
sync();
- std::vector<Particle>::reverse_iterator iter;
- const float size_factor(1);
- float radius(size_factor*size*sqrt(1.0f/(abs(pw)*abs(ph)))), temp_radius;
-
- if(radius>1.0f)
+ if (particle_list.begin() != particle_list.end())
{
- radius*=1.0; // what does this do?
- int x1,y1,x2,y2;
- for(iter=particle_list.rbegin();iter!=particle_list.rend();++iter)
- {
- temp_radius = radius;
- float radius(temp_radius);
- Color color(iter->color);
- if(size_as_alpha)
- {
- radius*=color.get_a();
- color.set_a(1);
- }
-
- // calculate the box that this particle will be drawn as
- x1=ceil_to_int((iter->point[0]-tl[0])/pw-(radius*0.5));
- y1=ceil_to_int((iter->point[1]-tl[1])/ph-(radius*0.5));
- x2=x1+round_to_int(radius);
- y2=y1+round_to_int(radius);
-
- // if the box is entirely off the canvas, go to the next particle
- if(x1>=surface->get_w() || y1>=surface->get_h() || x2<0 || y2<0) continue;
+ std::vector<Particle>::iterator iter;
+ Particle *particle;
- // adjust the box so it's entirely on the canvas
- if(x2>=surface->get_w()) x2=surface->get_w();
- if(y2>=surface->get_h()) y2=surface->get_h();
- if(x1<0) x1=0;
- if(y1<0) y1=0;
+ float radius(size*sqrt(1.0f/(abs(pw)*abs(ph))));
- int w(min(round_to_int(radius),x2-x1));
- int h(min(round_to_int(radius),y2-y1));
+ int x1,y1,x2,y2;
- if(w<=0 || h<=0)
- continue;
+ if (reverse) iter = particle_list.end();
+ else iter = particle_list.begin();
- Surface::alpha_pen surface_pen(dest_surface.get_pen(x1,y1),1.0f);
- dest_surface.fill(color,surface_pen,w,h);
- }
- }
- else
- {
- //radius/=0.01;
- radius*=sqrt(step)*12.0f;
- for(iter=particle_list.rbegin();iter!=particle_list.rend();++iter)
+ while (true)
{
- temp_radius = radius;
- float radius(temp_radius);
- Color color(iter->color);
+ if (reverse) particle = &(*(iter-1));
+ else particle = &(*iter);
+
+ float scaled_radius(radius);
+ Color color(particle->color);
if(size_as_alpha)
{
- radius*=color.get_a();
+ scaled_radius*=color.get_a();
color.set_a(1);
}
- // calculate the point that this particle will be drawn as
- int x=floor_to_int((iter->point[0]-tl[0])/pw-0.5f);
- int y=floor_to_int((iter->point[1]-tl[1])/ph-0.5f);
+ // previously, radius was multiplied by sqrt(step)*12 only if
+ // the radius came out at less than 1 (pixel):
+ // if (radius<=1.0f) radius*=sqrt(step)*12.0f;
+ // seems a little arbitrary - does it help?
- // if the point is off the canvas, go to the next particle
- // fixme: we're losing a whole row and a whole column of pixels from each tile
- // by doing this. even in the final rendered image there are visible
- // horizontal stripes of damage:
- // http://dooglus.rincevent.net/synfig/plant-corruption.png
- if(x>=surface->get_w()-1 || y>=surface->get_h()-1 || x<0 || y<0) continue;
-
- // calculate how much of the point is at (x) and how much at (x+1)
- float x1=((iter->point[0]-tl[0])/pw-0.5f-x)*radius, x0=radius-x1;
-
- // calculate how much of the point is at (y) and how much at (y+1)
- float y1=((iter->point[1]-tl[1])/ph-0.5f-y)*radius, y0=radius-y1;
-
- Surface::alpha_pen surface_pen(dest_surface.get_pen(x,y),1.0f);
-
- // | x0 | x1
- // ---+-----+-----
- // y0 | 1st | 2nd
- // ---+-----+-----
- // y1 | 4th | 3rd
+ // calculate the box that this particle will be drawn as
+ float x1f=(particle->point[0]-tl[0])/pw-(scaled_radius*0.5);
+ float x2f=(particle->point[0]-tl[0])/pw+(scaled_radius*0.5);
+ float y1f=(particle->point[1]-tl[1])/ph-(scaled_radius*0.5);
+ float y2f=(particle->point[1]-tl[1])/ph+(scaled_radius*0.5);
+ x1=ceil_to_int(x1f);
+ x2=ceil_to_int(x2f)-1;
+ y1=ceil_to_int(y1f);
+ y2=ceil_to_int(y2f)-1;
+
+ // if the box isn't entirely off the canvas, draw it
+ if(x1<=surface_width && y1<=surface_height && x2>=0 && y2>=0)
+ {
+ float x1e=x1-x1f, x2e=x2f-x2, y1e=y1-y1f, y2e=y2f-y2;
+ // printf("x1e %.4f x2e %.4f y1e %.4f y2e %.4f\n", x1e, x2e, y1e, y2e);
+
+ // adjust the box so it's entirely on the canvas
+ if(x1<=0) { x1=0; x1e=0; }
+ if(y1<=0) { y1=0; y1e=0; }
+ if(x2>=surface_width) { x2=surface_width; x2e=0; }
+ if(y2>=surface_height) { y2=surface_height; y2e=0; }
+
+ int w(x2-x1), h(y2-y1);
+
+ Surface::alpha_pen surface_pen(dest_surface.get_pen(x1,y1),1.0f);
+ if(w>0 && h>0)
+ dest_surface.fill(color,surface_pen,w,h);
+
+ /* the rectangle doesn't cross any vertical pixel boundaries so we don't
+ * need to draw any top or bottom edges
+ */
+ if(x2<x1)
+ {
+ // case 1 - a single pixel
+ if(y2<y1)
+ {
+ surface_pen.move_to(x2,y2);
+ surface_pen.set_alpha((x2f-x1f)*(y2f-y1f));
+ surface_pen.put_value(color);
+ }
+ // case 2 - a single vertical column of pixels
+ else
+ {
+ surface_pen.move_to(x2,y1-1);
+ if (y1e!=0) // maybe draw top pixel
+ {
+ surface_pen.set_alpha(y1e*(x2f-x1f));
+ surface_pen.put_value(color);
+ }
+ surface_pen.inc_y();
+ surface_pen.set_alpha(x2f-x1f);
+ for(int i=y1; i<y2; i++) // maybe draw pixels between
+ {
+ surface_pen.put_value(color);
+ surface_pen.inc_y();
+ }
+ if (y2e!=0) // maybe draw bottom pixel
+ {
+ surface_pen.set_alpha(y2e*(x2f-x1f));
+ surface_pen.put_value(color);
+ }
+ }
+ }
+ else
+ {
+ // case 3 - a single horizontal row of pixels
+ if(y2<y1)
+ {
+ surface_pen.move_to(x1-1,y2);
+ if (x1e!=0) // maybe draw left pixel
+ {
+ surface_pen.set_alpha(x1e*(y2f-y1f));
+ surface_pen.put_value(color);
+ }
+ surface_pen.inc_x();
+ surface_pen.set_alpha(y2f-y1f);
+ for(int i=x1; i<x2; i++) // maybe draw pixels between
+ {
+ surface_pen.put_value(color);
+ surface_pen.inc_x();
+ }
+ if (x2e!=0) // maybe draw right pixel
+ {
+ surface_pen.set_alpha(x2e*(y2f-y1f));
+ surface_pen.put_value(color);
+ }
+ }
+ // case 4 - a proper block of pixels
+ else
+ {
+ if (x1e!=0) // maybe draw left edge
+ {
+ surface_pen.move_to(x1-1,y1-1);
+ if (y1e!=0) // maybe draw top left pixel
+ {
+ surface_pen.set_alpha(x1e*y1e);
+ surface_pen.put_value(color);
+ }
+ surface_pen.inc_y();
+ surface_pen.set_alpha(x1e);
+ for(int i=y1; i<y2; i++) // maybe draw pixels along the left edge
+ {
+ surface_pen.put_value(color);
+ surface_pen.inc_y();
+ }
+ if (y2e!=0) // maybe draw bottom left pixel
+ {
+ surface_pen.set_alpha(x1e*y2e);
+ surface_pen.put_value(color);
+ }
+ surface_pen.inc_x();
+ }
+ else
+ surface_pen.move_to(x1,y2);
+
+ if (y2e!=0) // maybe draw bottom edge
+ {
+ surface_pen.set_alpha(y2e);
+ for(int i=x1; i<x2; i++) // maybe draw pixels along the bottom edge
+ {
+ surface_pen.put_value(color);
+ surface_pen.inc_x();
+ }
+ if (x2e!=0) // maybe draw bottom right pixel
+ {
+ surface_pen.set_alpha(x2e*y2e);
+ surface_pen.put_value(color);
+ }
+ surface_pen.dec_y();
+ }
+ else
+ surface_pen.move_to(x2,y2-1);
+
+ if (x2e!=0) // maybe draw right edge
+ {
+ surface_pen.set_alpha(x2e);
+ for(int i=y1; i<y2; i++) // maybe draw pixels along the right edge
+ {
+ surface_pen.put_value(color);
+ surface_pen.dec_y();
+ }
+ if (y1e!=0) // maybe draw top right pixel
+ {
+ surface_pen.set_alpha(x2e*y1e);
+ surface_pen.put_value(color);
+ }
+ surface_pen.dec_x();
+ }
+ else
+ surface_pen.move_to(x2-1,y1-1);
+
+ if (y1e!=0) // maybe draw top edge
+ {
+ surface_pen.set_alpha(y1e);
+ for(int i=x1; i<x2; i++) // maybe draw pixels along the top edge
+ {
+ surface_pen.put_value(color);
+ surface_pen.dec_x();
+ }
+ }
+ }
+ }
+ }
- surface_pen.set_alpha(x0*y0); surface_pen.put_value(color); surface_pen.inc_x();
- surface_pen.set_alpha(x1*y0); surface_pen.put_value(color); surface_pen.inc_y();
- surface_pen.set_alpha(x1*y1); surface_pen.put_value(color); surface_pen.dec_x();
- surface_pen.set_alpha(x0*y1); surface_pen.put_value(color);
+ if (reverse)
+ {
+ if (--iter == particle_list.begin())
+ break;
+ }
+ else
+ {
+ if (++iter == particle_list.end())
+ break;
+ }
}
}
projects / synfig.git / blobdiff