--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file bline.cpp
+** \brief Template
+**
+** $Id: plant.cpp,v 1.2 2005/01/13 06:48:39 darco Exp $
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <synfig/angle.h>
+#include "plant.h"
+#include <synfig/string.h>
+#include <synfig/time.h>
+#include <synfig/context.h>
+#include <synfig/paramdesc.h>
+#include <synfig/renddesc.h>
+#include <synfig/surface.h>
+#include <synfig/value.h>
+#include <synfig/valuenode.h>
+
+#include <ETL/calculus>
+#include <ETL/bezier>
+#include <ETL/hermite>
+#include <vector>
+
+#include <synfig/valuenode_bline.h>
+
+#endif
+
+using namespace etl;
+
+/* === M A C R O S ========================================================= */
+
+#define SAMPLES 300
+#define ROUND_END_FACTOR (4)
+#define CUSP_THRESHOLD (0.15)
+#define NO_LOOP_COOKIE synfig::Vector(84951305,7836658)
+#define EPSILON (0.000000001)
+#define CUSP_TANGENT_ADJUST (0.025)
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(Plant);
+SYNFIG_LAYER_SET_NAME(Plant,"plant");
+SYNFIG_LAYER_SET_LOCAL_NAME(Plant,_("Plant"));
+SYNFIG_LAYER_SET_CATEGORY(Plant,_("Particle Systems"));
+SYNFIG_LAYER_SET_VERSION(Plant,"0.1");
+SYNFIG_LAYER_SET_CVS_ID(Plant,"$Id: plant.cpp,v 1.2 2005/01/13 06:48:39 darco Exp $");
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+
+Plant::Plant():
+ split_angle(Angle::deg(10)),
+ gravity(0,-0.1),
+ velocity(0.3),
+ step(0.01),
+ sprouts(10)
+{
+ bounding_rect=Rect::zero();
+ random_factor=0.2;
+ random.set_seed(time(NULL));
+
+ bline.push_back(BLinePoint());
+ bline.push_back(BLinePoint());
+ bline.push_back(BLinePoint());
+ bline[0].set_vertex(Point(0,1));
+ bline[1].set_vertex(Point(0,-1));
+ bline[2].set_vertex(Point(1,0));
+ bline[0].set_tangent(bline[1].get_vertex()-bline[2].get_vertex()*0.5f);
+ bline[1].set_tangent(bline[2].get_vertex()-bline[0].get_vertex()*0.5f);
+ bline[2].set_tangent(bline[0].get_vertex()-bline[1].get_vertex()*0.5f);
+ bline[0].set_width(1.0f);
+ bline[1].set_width(1.0f);
+ bline[2].set_width(1.0f);
+ bline_loop=true;
+ mass=(0.5);
+ splits=5;
+ drag=0.1;
+ size=0.015;
+ sync();
+ size_as_alpha=false;
+}
+
+void
+Plant::branch(int n,int depth,float t, float stunt_growth, synfig::Point position,synfig::Vector vel)const
+{
+ float next_split((1.0-t)/(splits-depth)+t/*+random_factor*random(40+depth,t*splits,0,0)/splits*/);
+ for(;t<next_split;t+=step)
+ {
+ vel[0]+=gravity[0]*step;
+ vel[1]+=gravity[1]*step;
+ vel*=(1.0-(drag)*step);
+ position[0]+=vel[0]*step;
+ position[1]+=vel[1]*step;
+
+ particle_list.push_back(Particle(
+ position,
+ gradient(t)
+ ));
+ bounding_rect.expand(position);
+ }
+
+ if(t>=1.0-stunt_growth)return;
+
+ synfig::Real sin_v=synfig::Angle::cos(split_angle).get();
+ synfig::Real cos_v=synfig::Angle::sin(split_angle).get();
+
+ synfig::Vector velocity1(vel[0]*sin_v-vel[1]*cos_v+random_factor*random(2,30+n+depth,t*splits,0.0f,0.0f),vel[0]*cos_v+vel[1]*sin_v+random_factor*random(2,32+n+depth,t*splits,0.0f,0.0f));
+ synfig::Vector velocity2(vel[0]*sin_v+vel[1]*cos_v+random_factor*random(2,31+n+depth,t*splits,0.0f,0.0f),-vel[0]*cos_v+vel[1]*sin_v+random_factor*random(2,33+n+depth,t*splits,0.0f,0.0f));
+
+ Plant::branch(n,depth+1,t,stunt_growth,position,velocity1);
+ Plant::branch(n,depth+1,t,stunt_growth,position,velocity2);
+}
+
+void
+Plant::calc_bounding_rect()const
+{
+ std::vector<synfig::BLinePoint>::const_iterator iter,next;
+
+ bounding_rect=Rect::zero();
+
+ // Bline must have at least 2 points in it
+ if(bline.size()<=2)
+ return;
+
+ next=bline.begin();
+
+ if(bline_loop)
+ iter=--bline.end();
+ else
+ iter=next++;
+
+ for(;next!=bline.end();iter=next++)
+ {
+ bounding_rect.expand(iter->get_vertex());
+ bounding_rect.expand(next->get_vertex());
+ bounding_rect.expand(iter->get_vertex()+iter->get_tangent2()*0.3333333333333);
+ bounding_rect.expand(next->get_vertex()-next->get_tangent1()*0.3333333333333);
+ bounding_rect.expand(next->get_vertex()+next->get_tangent2()*velocity);
+ }
+ bounding_rect.expand_x(gravity[0]);
+ bounding_rect.expand_y(gravity[1]);
+ bounding_rect.expand_x(size);
+ bounding_rect.expand_y(size);
+}
+
+void
+Plant::sync()const
+{
+ particle_list.clear();
+
+ bounding_rect=Rect::zero();
+
+ // Bline must have at least 2 points in it
+ if(bline.size()<=2)
+ return;
+
+ std::vector<synfig::BLinePoint>::const_iterator iter,next;
+
+ etl::hermite<Vector> curve;
+
+ Real step(abs(this->step));
+
+ int seg(0);
+
+ next=bline.begin();
+
+ if(bline_loop)
+ iter=--bline.end();
+ else
+ iter=next++;
+
+ for(;next!=bline.end();iter=next++,seg++)
+ {
+ curve.p1()=iter->get_vertex();
+ curve.t1()=iter->get_tangent2();
+ curve.p2()=next->get_vertex();
+ curve.t2()=next->get_tangent1();
+ curve.sync();
+ etl::derivative<etl::hermite<Vector> > deriv(curve);
+
+ Real f;
+ int i(0), b(round_to_int((1.0/step)/(float)sprouts-1));
+ if(b<=0)b=1;
+ for(f=0.0;f<1.0;f+=step,i++)
+ {
+ Point point(curve(f));
+
+ particle_list.push_back(Particle(
+ point,
+ gradient(0)
+ ));
+
+ bounding_rect.expand(point);
+
+ Real stunt_growth(random(2,i,f+seg,0.0f,0.0f)/2.0+0.5);
+ stunt_growth*=stunt_growth;
+
+ Vector branch_velocity(deriv(f).norm()*velocity);
+
+ branch_velocity[0]+=random_factor*random(2,1,f*splits,0.0f,0.0f);
+ branch_velocity[1]+=random_factor*random(2,2,f*splits,0.0f,0.0f);
+
+ if(i%b==0)
+ branch(
+ i,
+ 0,
+ 0, // time
+ stunt_growth, // stunt growth
+ point,branch_velocity
+ );
+ }
+ }
+
+ needs_sync_=false;
+}
+
+bool
+Plant::set_param(const String & param, const ValueBase &value)
+{
+ if(param=="bline" && value.get_type()==ValueBase::TYPE_LIST)
+ {
+ bline=value;
+ bline_loop=value.get_loop();
+ needs_sync_=true;
+
+ return true;
+ }
+ if(param=="seed" && value.same_as(int()))
+ {
+ random.set_seed(value.get(int()));
+ needs_sync_=true;
+ return true;
+ }
+ 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(step,needs_sync_=true);
+ IMPORT_PLUS(splits,needs_sync_=true);
+ 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);
+
+ return Layer_Composite::set_param(param,value);
+}
+/*
+void
+Plant::set_time(Context context, Time time)const
+{
+ if(needs_sync==true)
+ {
+ sync();
+ needs_sync_=false;
+ }
+ //const_cast<Plant*>(this)->sync();
+ context.set_time(time);
+}
+
+void
+Plant::set_time(Context context, Time time, Vector pos)const
+{
+ if(needs_sync==true)
+ {
+ sync();
+ needs_sync_=false;
+ }
+ //const_cast<Plant*>(this)->sync();
+ context.set_time(time,pos);
+}
+*/
+ValueBase
+Plant::get_param(const String& param)const
+{
+ if(param=="seed")
+ return random.get_seed();
+ EXPORT(bline);
+ EXPORT(split_angle);
+ EXPORT(gravity);
+ EXPORT(velocity);
+ EXPORT(step);
+ EXPORT(gradient);
+ EXPORT(splits);
+ EXPORT(sprouts);
+ EXPORT(random_factor);
+ EXPORT(drag);
+ EXPORT(size);
+
+ EXPORT(size_as_alpha);
+
+ EXPORT_NAME();
+ EXPORT_VERSION();
+
+ return Layer_Composite::get_param(param);
+}
+
+Layer::Vocab
+Plant::get_param_vocab()const
+{
+ Layer::Vocab ret(Layer_Composite::get_param_vocab());
+
+ ret.push_back(ParamDesc("bline")
+ .set_local_name(_("Vertices"))
+ //.set_origin("offset")
+ //.set_scalar("width")
+ .set_description(_("A list of BLine Points"))
+ );
+
+ ret.push_back(ParamDesc("gradient")
+ .set_local_name(_("Gradient"))
+ );
+
+ ret.push_back(ParamDesc("split_angle")
+ .set_local_name(_("Split Angle"))
+ );
+
+ ret.push_back(ParamDesc("gravity")
+ .set_local_name(_("Gravity"))
+ .set_is_distance()
+ );
+
+ ret.push_back(ParamDesc("velocity")
+ .set_local_name(_("Velocity"))
+ );
+
+ ret.push_back(ParamDesc("size")
+ .set_local_name(_("Stem Size"))
+ .set_is_distance()
+ );
+
+ ret.push_back(ParamDesc("size_as_alpha")
+ .set_local_name(_("SizeAsAlpha"))
+ );
+
+ ret.push_back(ParamDesc("step")
+ .set_local_name(_("Step"))
+ );
+
+ ret.push_back(ParamDesc("seed")
+ .set_local_name(_("Seed"))
+ );
+
+ ret.push_back(ParamDesc("splits")
+ .set_local_name(_("Splits"))
+ );
+
+ ret.push_back(ParamDesc("sprouts")
+ .set_local_name(_("Sprouts"))
+ );
+
+ ret.push_back(ParamDesc("random_factor")
+ .set_local_name(_("Random Factor"))
+ );
+
+ ret.push_back(ParamDesc("drag")
+ .set_local_name(_("Drag"))
+ );
+
+
+ return ret;
+}
+
+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));
+ if(is_disabled() || !ret)
+ return ret;
+
+ Surface dest_surface;
+ 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 int w(renddesc.get_w());
+ const int h(renddesc.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(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))));
+
+ if(radius>1.0f)
+ {
+ radius*=1.0;
+ int x1,y1,x2,y2;
+ for(iter=particle_list.rbegin();iter!=particle_list.rend();++iter)
+ {
+ float radius(radius);
+ Color color(iter->color);
+ if(size_as_alpha)
+ {
+ radius*=color.get_a();
+ color.set_a(1);
+ }
+
+ 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(x1>=surface->get_w() || y1>=surface->get_h())
+ continue;
+
+ if(x2<0 || y2<0)
+ continue;
+
+ 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;
+
+ int w(min(round_to_int(radius),x2-x1));
+ int h(min(round_to_int(radius),y2-y1));
+
+ if(w<=0 || h<=0)
+ continue;
+
+ 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;
+ int x,y;
+ float a,b,c,d;
+ for(iter=particle_list.rbegin();iter!=particle_list.rend();++iter)
+ {
+ float radius(radius);
+ Color color(iter->color);
+ if(size_as_alpha)
+ {
+ radius*=color.get_a();
+ color.set_a(1);
+ }
+
+ x=floor_to_int((iter->point[0]-tl[0])/pw-0.5f);
+ y=floor_to_int((iter->point[1]-tl[1])/ph-0.5f);
+
+ if(x>=surface->get_w()-1 || y>=surface->get_h()-1 || x<0 || y<0)
+ {
+ continue;
+ }
+
+ a=((iter->point[0]-tl[0])/pw-0.5f-x)*radius;
+ b=((iter->point[1]-tl[1])/ph-0.5f-y)*radius;
+ c=radius-a;
+ d=radius-b;
+
+ Surface::alpha_pen surface_pen(dest_surface.get_pen(x,y),1.0f);
+
+ surface_pen.set_alpha(c*d);
+ surface_pen.put_value(color);
+ surface_pen.inc_x();
+ surface_pen.set_alpha(a*d);
+ surface_pen.put_value(color);
+ surface_pen.inc_y();
+ surface_pen.set_alpha(a*b);
+ surface_pen.put_value(color);
+ surface_pen.dec_x();
+ surface_pen.set_alpha(c*b);
+ surface_pen.put_value(color);
+ }
+ }
+
+ Surface::alpha_pen pen(surface->get_pen(0,0),get_amount(),get_blend_method());
+ dest_surface.blit_to(pen);
+
+ return true;
+}
+
+Rect
+Plant::get_bounding_rect(Context context)const
+{
+ if(needs_sync_==true)
+ sync();
+
+ if(is_disabled())
+ return Rect::zero();
+
+ if(Color::is_onto(get_blend_method()))
+ return context.get_full_bounding_rect() & bounding_rect;
+
+ //if(get_blend_method()==Color::BLEND_BEHIND)
+ // return context.get_full_bounding_rect() | bounding_rect;
+ return bounding_rect;
+}
projects / synfig.git / blobdiff