+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file plant.cpp
-** \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
-** 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,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 ================================================= */
-
-/* === M E T H O D S ======================================================= */
-
-
-Plant::Plant():
- origin(0,0),
- split_angle(Angle::deg(10)),
- gravity(0,-0.1),
- velocity(0.3),
- perp_velocity(0.0),
- step(0.01),
- sprouts(10),
- version(version__),
- use_width(true)
-{
- 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;
- needs_sync_=true;
- sync();
- size_as_alpha=false;
- reverse=true;
-}
-
-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)));
- if (particle_list.size() % 1000000 == 0)
- synfig::info("constructed %d million particles...", particle_list.size()/1000000);
-
- 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(Random::SMOOTH_COSINE, 30+n+depth, t*splits, 0.0f, 0.0f),
- vel[0]*cos_v + vel[1]*sin_v + random_factor*random(Random::SMOOTH_COSINE, 32+n+depth, t*splits, 0.0f, 0.0f));
- synfig::Vector velocity2(vel[0]*sin_v + vel[1]*cos_v + random_factor*random(Random::SMOOTH_COSINE, 31+n+depth, t*splits, 0.0f, 0.0f),
- -vel[0]*cos_v + vel[1]*sin_v + random_factor*random(Random::SMOOTH_COSINE, 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
-{
- Mutex::Lock lock(mutex);
- if (!needs_sync_) return;
- time_t start_time; time(&start_time);
- particle_list.clear();
-
- bounding_rect=Rect::zero();
-
- // Bline must have at least 2 points in it
- if(bline.size()<2)
- {
- needs_sync_=false;
- 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(); // iter is the last bline in the list; next is the first bline in the list
- else iter=next++; // iter is the first bline in the list; next is the second bline in the list
-
- // 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();
- curve.t2()=next->get_tangent1();
- curve.sync();
- etl::derivative<etl::hermite<Vector> > deriv(curve);
-
- 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));
-
- particle_list.push_back(Particle(point, gradient(0)));
- if (particle_list.size() % 1000000 == 0)
- synfig::info("constructed %d million particles...", particle_list.size()/1000000);
-
- bounding_rect.expand(point);
-
- 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) {
- Vector branch_velocity(deriv(f).norm()*velocity + deriv(f).perp().norm()*perp_velocity);
-
- if (isnan(branch_velocity[0]) || isnan(branch_velocity[1]))
- continue;
-
- 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
- point, branch_velocity);
- }
- }
- }
-
- 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;
-}
-
-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_type_as(int()))
- {
- random.set_seed(value.get(int()));
- needs_sync_=true;
- return true;
- }
- IMPORT(origin);
- 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;
- 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);
- IMPORT(use_width);
-
- IMPORT_AS(origin,"offset");
-
- 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(origin);
- EXPORT(split_angle);
- EXPORT(gravity);
- EXPORT(velocity);
- EXPORT(perp_velocity);
- EXPORT(step);
- EXPORT(gradient);
- EXPORT(splits);
- EXPORT(sprouts);
- EXPORT(random_factor);
- EXPORT(drag);
- EXPORT(size);
- EXPORT(size_as_alpha);
- EXPORT(reverse);
- EXPORT(use_width);
-
- EXPORT_NAME();
-
- if(param=="Version" || param=="version" || param=="version__")
- return 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_description(_("A list of BLine Points"))
- .set_origin("origin")
- .set_hint("width")
- );
-
- ret.push_back(ParamDesc("origin")
- .set_local_name(_("Origin"))
- );
-
- ret.push_back(ParamDesc("gradient")
- .set_local_name(_("Gradient"))
- .set_description(_("Gradient to be used for coloring the plant"))
- );
-
- ret.push_back(ParamDesc("split_angle")
- .set_local_name(_("Split Angle"))
- .set_description(_("Angle by which each split deviates from its parent"))
- );
-
- ret.push_back(ParamDesc("gravity")
- .set_local_name(_("Gravity"))
- .set_description(_("Direction in which the shoots tend to face"))
- .set_is_distance()
- );
-
- ret.push_back(ParamDesc("velocity")
- .set_local_name(_("Tangential Velocity"))
- .set_description(_("Amount to which shoots tend to grow along the tangent to the BLine"))
- );
-
- ret.push_back(ParamDesc("perp_velocity")
- .set_local_name(_("Perpendicular Velocity"))
- .set_description(_("Amount to which shoots tend to grow perpendicular to the tangent to the BLine"))
- );
-
- ret.push_back(ParamDesc("size")
- .set_local_name(_("Stem Size"))
- .set_description(_("Size of the stem"))
- .set_is_distance()
- );
-
- ret.push_back(ParamDesc("size_as_alpha")
- .set_local_name(_("Size As Alpha"))
- .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"))
- );
-
- ret.push_back(ParamDesc("seed")
- .set_local_name(_("Seed"))
- .set_description(_("Used to seed the pseudo-random number generator"))
- );
-
- ret.push_back(ParamDesc("splits")
- .set_local_name(_("Splits"))
- .set_description(_("Maximum number of times that each sprout can sprout recursively"))
- );
-
- ret.push_back(ParamDesc("sprouts")
- .set_local_name(_("Sprouts"))
- .set_description(_("Number of places that growth occurs on each bline section"))
- );
-
- ret.push_back(ParamDesc("random_factor")
- .set_local_name(_("Random Factor"))
- .set_description(_("Used to scale down all random effects. Set to zero to disable randomness"))
- );
-
- ret.push_back(ParamDesc("drag")
- .set_local_name(_("Drag"))
- .set_description(_("Drag slows the growth"))
- );
-
- ret.push_back(ParamDesc("use_width")
- .set_local_name(_("Use Width"))
- .set_description(_("Scale the velocity by the bline's width"))
- );
-
- return ret;
-}
-
-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));
- 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()-origin);
- const Point br(renddesc.get_br()-origin);
-
- 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();
-
- if (particle_list.begin() != particle_list.end())
- {
- std::vector<Particle>::iterator iter;
- Particle *particle;
-
- float radius(size*sqrt(1.0f/(abs(pw)*abs(ph))));
-
- int x1,y1,x2,y2;
-
- if (reverse) iter = particle_list.end();
- else iter = particle_list.begin();
-
- while (true)
- {
- if (reverse) particle = &(*(iter-1));
- else particle = &(*iter);
-
- float scaled_radius(radius);
- Color color(particle->color);
- if(size_as_alpha)
- {
- scaled_radius*=color.get_a();
- color.set_a(1);
- }
-
- // 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?
-
- // 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();
- }
- }
- }
- }
- }
-
- if (reverse)
- {
- if (--iter == particle_list.begin())
- break;
- }
- else
- {
- if (++iter == particle_list.end())
- break;
- }
- }
- }
-
- 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