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demo.cpp
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demo.cpp
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#include <iostream>
#include <iomanip>
#include <memory>
#include <ctime>
#include "Candle/geometry/Polygon.hpp"
#include "Candle/graphics/VertexArray.hpp"
#include "Candle/Constants.hpp"
#include "Candle/LightingArea.hpp"
#include "Candle/LightSource.hpp"
#include "Candle/RadialLight.hpp"
#include "Candle/DirectedLight.hpp"
/*
* AUXILIAR
*/
float clamp(float x){
return std::max(0.f, std::min(1.f, x));
}
struct App{
/*
* WINDOW
*/
constexpr static const float WIDTH = 700.f;
constexpr static const float HEIGHT = 700.f;
constexpr static const float MENU_W = HEIGHT/8.f;
sf::RenderWindow w;
sf::View sandboxView, menuView;
/*
* LIGHTING
*/
candle::LightingArea lighting;
bool glow = true;
bool persistent_fog = true;
std::vector<std::shared_ptr<candle::LightSource>> lights1; // all
std::vector<std::shared_ptr<candle::LightSource>> lights2; // glowing
candle::EdgeVector edgePool;
sf::VertexArray edgeVertices;
sf::Texture fogTex;
/*
* BACKGROUND
*/
static const int ROWS = 16;
static const int COLS = 16;
float CELL_W = WIDTH / COLS;
float CELL_H = HEIGHT / ROWS;
sf::VertexArray background;
/*
* INTERACTIVITY - Brushes - Lights
*/
enum Brush{
NONE = -1,
RADIAL = 0,
DIRECTED = 1,
BLOCK = 2,
LINE = 3};
Brush brush;
bool lineStarted;
sf::VertexArray mouseBlock;
float blockSize;
candle::RadialLight radialLight;
candle::DirectedLight directedLight;
bool control, shift, alt;
/*
* INTERACTIVITY - Menu
*/
struct Button: sf::Drawable, sf::Transformable{
static sf::Color buttonA1;
static sf::Color buttonA2;
static sf::Color buttonZ1;
static sf::Color buttonZ2;
static int BC;
sf::RectangleShape rect;
sf::Drawable* icon;
void (*function)(App*);
Button(sf::Drawable* d, void (*f)(App*)){
float bw = (MENU_W-4);
rect.setFillColor(buttonZ1);
rect.setOutlineColor(buttonZ2);
rect.setOutlineThickness(2);
rect.setSize({bw, bw});
setPosition(2, 2 + (BC)*(bw + 4));
icon = d;
function = f;
BC++;
}
~Button(){
// delete icon;
}
bool contains(const sf::Vector2f& p) const{
return getTransform().transformRect(rect.getGlobalBounds()).contains(p);
}
void draw(sf::RenderTarget& t, sf::RenderStates st) const{
st.transform = this->getTransform();
t.draw(rect, st);
if(icon != NULL)
t.draw(*icon, st);
}
};
std::vector<Button> buttons;
/*
* SUBROUTINES
*/
sf::Vector2f getMousePosition(){
sf::Vector2f mp = w.mapPixelToCoords(sf::Mouse::getPosition(w));
if(control){
mp = {
CELL_W * (0.5f + std::round(mp.x/CELL_W - 0.5f)),
CELL_H * (0.5f + std::round(mp.y/CELL_H - 0.5f))
};
}
return mp;
}
App()
: lighting(candle::LightingArea::FOG, {0.f,0.f}, {WIDTH, HEIGHT})
{
w.create(sf::VideoMode(WIDTH+MENU_W, HEIGHT), "Candle - demo");
w.setFramerateLimit(60);
float totalWidth = WIDTH + MENU_W;
edgeVertices.setPrimitiveType(sf::Lines);
background.setPrimitiveType(sf::Quads);
background.resize(ROWS * COLS * 4);
if(fogTex.loadFromFile("texture.png")){
lighting.setAreaTexture(&fogTex);
lighting.scale(WIDTH/fogTex.getSize().x, HEIGHT/fogTex.getSize().y);
}else{
std::cout << "No texture detected" << std::endl;
lighting.setAreaColor(sf::Color::Black);
}
lighting.clear();
mouseBlock.setPrimitiveType(sf::Lines);
mouseBlock.resize(8);
sandboxView.setSize(WIDTH, HEIGHT);
sandboxView.setCenter(WIDTH/2.f, HEIGHT/2.f);
sandboxView.setViewport({0.f, 0.f, WIDTH/totalWidth, 1.f});
menuView.setSize(MENU_W, HEIGHT);
menuView.setCenter(MENU_W/2, HEIGHT/2);
menuView.setViewport({WIDTH/totalWidth, 0.f, MENU_W/totalWidth, 1.f});
radialLight.setRange(100.f);
directedLight.setRange(200.f);
directedLight.setBeamWidth(200.f);
static const sf::Color BG_COLORS[] = {
sf::Color::Green,
sf::Color::Blue,
sf::Color::Red
};
int colors = sizeof(BG_COLORS) / sizeof(*BG_COLORS);
for (int i = 0; i < COLS * ROWS; i++){
int p1 = i*4;
int p2 = p1+1;
int p3 = p1+2;
int p4 = p1+3;
float x = CELL_W * (i % COLS);
float y = CELL_H * (i / COLS);
background[p1].color =
background[p2].color =
background[p3].color =
background[p4].color = BG_COLORS[i % colors];
background[p1].position = {x, y};
background[p2].position = {x, y + CELL_H};
background[p3].position = {x + CELL_W, y + CELL_H};
background[p4].position = {x + CELL_W, y};
}
setMouseBlockSize(CELL_W);
brush = NONE;
lineStarted = false;
control = false;
shift = false;
alt = false;
auto i1 = new sf::CircleShape(MENU_W/3, 60);
i1->setFillColor({255,255,150,255});
i1->setOutlineColor(sf::Color::White);
i1->setOutlineThickness(2);
i1->move(MENU_W/6, MENU_W/6);
buttons.emplace_back(i1, [](App* app){ app->setBrush(RADIAL); });
auto i2 = new sf::RectangleShape({MENU_W*2/3, MENU_W/2});
i2->move(MENU_W/6, MENU_W/4);
i2->setFillColor({255,255,150,255});
i2->setOutlineColor(sf::Color::White);
i2->setOutlineThickness(1);
buttons.emplace_back(i2, [](App* app){ app->setBrush(DIRECTED); });
auto i3 = new sf::RectangleShape({MENU_W/2, MENU_W/2});
i3->move(MENU_W/4, MENU_W/4);
i3->setFillColor({25,25,25,255});
buttons.emplace_back(i3, [](App* app){ app->setBrush(BLOCK); });
auto i4 = new sf::RectangleShape({MENU_W, 3});
i4->move(MENU_W*2/15, MENU_W*2/15);
i4->rotate(45.f);
i4->setFillColor({25,25,25,255});
buttons.emplace_back(i4, [](App* app){ app->setBrush(LINE); });
auto i7 = new sf::VertexArray(sf::Quads, 12);
for(int i=0; i < 12; i++){
(*i7)[i] = background[i];
}
sfu::transform(*i7, {MENU_W*2/7/CELL_W, 0, MENU_W/14 - 1,
0, MENU_W*2/7/CELL_H, MENU_W*5/14 - 1,
0, 0, 1
});
sfu::darken(*i7, 0.2);
buttons.emplace_back(i7, [](App *app){ app->lighting.setAreaOpacity(clamp(app->lighting.getAreaOpacity() - 0.1)); });
auto i8 = new sf::VertexArray(*i7);
sfu::darken(*i8, 0.5);
buttons.emplace_back(i8, [](App *app){ app->lighting.setAreaOpacity(clamp(app->lighting.getAreaOpacity() + 0.1)); });
auto i5 = new sf::VertexArray(sf::Quads, 8);
(*i5)[0].position = {1, 0};
(*i5)[1].position = {2, 0};
(*i5)[2].position = {2, 3};
(*i5)[3].position = {1, 3};
(*i5)[4].position = {0, 1};
(*i5)[5].position = {3, 1};
(*i5)[6].position = {3, 2};
(*i5)[7].position = {0, 2};
sfu::setColor(*i5, {255,255,150,255});
float a = sfu::PI/4;
float s = MENU_W*2/9;
sfu::transform(*i5, {s*std::cos(a), s*-std::sin(a), MENU_W/2,
s*std::sin(a), s*std::cos(a), 0,
0, 0, 1
});
buttons.emplace_back(i5, [](App* app){ app->clearLights(); });
auto i6 = new sf::VertexArray(*i5);
sfu::setColor(*i6, {25,25,25,255});
buttons.emplace_back(i6, [](App *app){ app->clearEdges(); app->castAllLights(); });
}
void capture(){
sf::Texture tex;
tex.create(w.getSize().x, w.getSize().y);
tex.update(w);
sf::RenderTexture rt;
rt.create(WIDTH, HEIGHT);
rt.setView(sf::View({WIDTH/2, HEIGHT/2}, {WIDTH, HEIGHT}));
rt.draw(sf::Sprite(tex));
rt.display();
std::string name = "candle-capture-";
char timestr[13];
time_t rawtime;
struct tm * timeinfo;
time(&rawtime);
timeinfo = localtime(&rawtime);
strftime(timestr,13,"%y%m%d%H%M%S",timeinfo);
name += timestr;
name += ".png";
if(!rt.getTexture().copyToImage().saveToFile(name)){
exit(1);
}
}
void setMouseBlockSize(float size){
if(size > 0){
mouseBlock[7].position =
mouseBlock[0].position = {-size/2, -size/2};
mouseBlock[1].position =
mouseBlock[2].position = {size/2, -size/2};
mouseBlock[3].position =
mouseBlock[4].position = {size/2, size/2};
mouseBlock[5].position =
mouseBlock[6].position = {-size/2, size/2};
blockSize = size;
if(brush == BLOCK){
popBlock();
pushBlock(getMousePosition());
castAllLights();
}
}
}
void pushEdge(const sfu::Line& edge){
edgePool.push_back(edge);
edgeVertices.append(sf::Vertex(edge.m_origin));
edgeVertices.append(sf::Vertex(edge.point(1.f)));
}
void popEdge(){
edgePool.pop_back();
edgeVertices.resize(edgeVertices.getVertexCount() - 2);
}
void pushBlock(const sf::Vector2f& pos){
const sf::Vector2f points[] = {
pos + mouseBlock[0].position,
pos + mouseBlock[2].position,
pos + mouseBlock[4].position,
pos + mouseBlock[6].position,
};
sfu::Polygon p(points, 4);
for(auto& l: p.lines){
pushEdge(l);
}
}
void popBlock(){
for(int i = 0; i < 4; i++){
popEdge();
}
}
void drawBrush(){
sf::Transform t;
t.translate(getMousePosition());
switch(brush){
case LINE:
w.draw(sf::CircleShape(1.5f), sf::RenderStates(t));
break;
default:
break;
}
}
void setBrush(Brush b){
if(b != brush){
if(b == BLOCK){
pushBlock(getMousePosition());
}
if(brush == BLOCK){
popBlock();
castAllLights();
}
if(lineStarted){
popEdge();
castAllLights();
lineStarted = false;
}
brush = b;
updateOnMouseMove();
}
}
void castAllLights(){
for(auto& l: lights1){
l -> castLight(edgePool.begin(), edgePool.end());
}
}
void click(){
sf::Vector2f mp = getMousePosition();
if(mp.x > WIDTH){
mp.x -= WIDTH;
bool press=false;
for(auto& button: buttons){
if(button.contains(mp)){
button.rect.setFillColor(sf::Color(Button::buttonA1));
button.rect.setOutlineColor(sf::Color(Button::buttonA2));
button.function(this);
press = true;
}else{
button.rect.setFillColor(sf::Color(Button::buttonZ1));
button.rect.setOutlineColor(sf::Color(Button::buttonZ2));
}
}
if(!press) setBrush(NONE);
}else{
switch(brush){
case RADIAL:{
std::shared_ptr<candle::LightSource> nl(new candle::RadialLight(radialLight));
lights1.push_back(nl);
if(glow){
lights2.push_back(nl);
}
}
break;
case DIRECTED:{
std::shared_ptr<candle::LightSource> nl(new candle::DirectedLight(directedLight));
lights1.push_back(nl);
if(glow){
lights2.push_back(nl);
}
}
break;
case LINE:
pushEdge(sfu::Line(mp, 0.f));
lineStarted = true;
break;
case BLOCK:
pushBlock(mp);
break;
default:
break;
}
}
}
void updateOnMouseMove(){
sf::Vector2f mp = getMousePosition();
if(mp.x < WIDTH){
switch(brush){
case BLOCK:
popBlock();
pushBlock(mp);
castAllLights();
break;
case RADIAL:
radialLight.setPosition(mp);
radialLight.castLight(edgePool.begin(), edgePool.end());
break;
case DIRECTED:
directedLight.setPosition(mp);
directedLight.castLight(edgePool.begin(), edgePool.end());
break;
case LINE:
if(lineStarted){
int n = edgePool.size();
sf::Vector2f orig = edgePool[n-1].m_origin;
popEdge();
pushEdge(sfu::Line(orig, mp));
castAllLights();
}
default:
break;
}
}
}
void updateOnMouseScroll(int d){
if(getMousePosition().x < WIDTH){
switch(brush){
case RADIAL:
if(alt){
radialLight.rotate(d*6);
}else if(shift){
radialLight.setBeamAngle(radialLight.getBeamAngle() + d*5);
}else{
radialLight.setRange(std::max(0.f, radialLight.getRange() + d*10));
}
radialLight.castLight(edgePool.begin(), edgePool.end());
break;
case DIRECTED:
if(alt){
directedLight.rotate(6 * d);
}else if(shift){
directedLight.setBeamWidth(directedLight.getBeamWidth() + d*5);
}else{
directedLight.setRange(std::max(0.f, directedLight.getRange() + d*10));
}
directedLight.castLight(edgePool.begin(), edgePool.end());
break;
case BLOCK:
setMouseBlockSize(blockSize + d*CELL_W);
break;
default:
break;
}
}
}
void updateOnPressKey(sf::Keyboard::Key k){
switch(k){
case sf::Keyboard::M:{
bool textured = lighting.getAreaTexture() != nullptr;
if(lighting.getMode() == candle::LightingArea::FOG){
lighting.setMode(candle::LightingArea::AMBIENT);
lighting.setAreaColor(textured? sf::Color::White: sf::Color::Yellow);
}else{
lighting.setMode(candle::LightingArea::FOG);
lighting.setAreaColor(textured? sf::Color::White: sf::Color::Black);
}
}
break;
case sf::Keyboard::T:
persistent_fog = !persistent_fog;
break;
case sf::Keyboard::P:
capture();
break;
case sf::Keyboard::Q:
case sf::Keyboard::Escape:
w.close();
break;
case sf::Keyboard::LControl:
control = true;
break;
case sf::Keyboard::LAlt:
alt = true;
break;
case sf::Keyboard::LShift:
shift = true;
break;
case sf::Keyboard::R:
setBrush(RADIAL);
break;
case sf::Keyboard::D:
setBrush(DIRECTED);
break;
case sf::Keyboard::B:
setBrush(BLOCK);
break;
case sf::Keyboard::L:
setBrush(LINE);
break;
case sf::Keyboard::A:
lighting.setAreaOpacity(clamp(lighting.getAreaOpacity()+0.1));
break;
case sf::Keyboard::Z:
lighting.setAreaOpacity(clamp(lighting.getAreaOpacity()-0.1));
break;
case sf::Keyboard::S:
if(brush == RADIAL || brush == DIRECTED){
radialLight.setIntensity(clamp(radialLight.getIntensity()+0.1));
directedLight.setIntensity(clamp(directedLight.getIntensity()+0.1));
}
break;
case sf::Keyboard::X:
if(brush == RADIAL || brush == DIRECTED){
radialLight.setIntensity(clamp(radialLight.getIntensity()-0.1));
directedLight.setIntensity(clamp(directedLight.getIntensity()-0.1));
}
break;
case sf::Keyboard::G:
if(brush == RADIAL || brush == DIRECTED){
glow = !glow;
}
break;
case sf::Keyboard::F:
if(brush == RADIAL || brush == DIRECTED){
radialLight.setFade(!radialLight.getFade());
directedLight.setFade(!directedLight.getFade());
}
break;
case sf::Keyboard::C:
if(brush == RADIAL || brush == DIRECTED){
static const sf::Color L_COLORS[] = {
sf::Color::White,
sf::Color::Magenta,
sf::Color::Cyan,
sf::Color::Yellow
};
static int color_i = 0;
int n = sizeof(L_COLORS)/sizeof(*L_COLORS);
color_i = (color_i+1) % n;
radialLight.setColor(L_COLORS[color_i]);
directedLight.setColor(L_COLORS[color_i]);
}
break;
case sf::Keyboard::Space:
lineStarted = false;
if(alt){
clearEdges();
}else if(shift){
clearLights();
}else{
clearAll();
}
castAllLights();
break;
default:
break;
}
}
void updateOnReleaseKey(sf::Keyboard::Key k){
switch(k){
case sf::Keyboard::LControl:
control = false;
break;
case sf::Keyboard::LAlt:
alt = false;
break;
case sf::Keyboard::LShift:
shift = false;
break;
default:
break;
}
}
void clearLights(){
lights1.clear();
lights2.clear();
}
void clearEdges(){
edgePool.clear();
edgeVertices.clear();
lineStarted = false;
if(brush == BLOCK) pushBlock(getMousePosition());
}
void clearAll(){
clearLights();
clearEdges();
}
void mainLoop(){
//candle::initializeTextures();
sf::Clock clock;
while(w.isOpen()){
sf::Event e;
while(w.pollEvent(e)){
switch(e.type){
case sf::Event::Closed:
w.close();
break;
case sf::Event::MouseMoved:
updateOnMouseMove();
break;
case sf::Event::MouseWheelScrolled:
updateOnMouseScroll((0 < e.mouseWheelScroll.delta) - (e.mouseWheelScroll.delta < 0));
break;
case sf::Event::KeyPressed:
updateOnPressKey(e.key.code);
break;
case sf::Event::KeyReleased:
updateOnReleaseKey(e.key.code);
break;
case sf::Event::MouseButtonPressed:
if(e.mouseButton.button == sf::Mouse::Left){
click();
}else{
setBrush(NONE);
}
break;
case sf::Event::MouseButtonReleased:
if(e.mouseButton.button == sf::Mouse::Left){
lineStarted = false;
for(auto& b: buttons){
b.rect.setFillColor(Button::buttonZ1);
b.rect.setOutlineColor(Button::buttonZ2);
}
}
break;
default:
break;
}
}
if(persistent_fog){
lighting.clear();
}
for(auto& l: lights1){
lighting.draw(*l);
}
if(brush == RADIAL){
lighting.draw(radialLight);
}else if(brush == DIRECTED){
lighting.draw(directedLight);
}
lighting.display();
w.clear();
w.setView(menuView);
for(auto& b: buttons){
w.draw(b);
}
w.setView(sandboxView);
w.draw(background);
w.draw(lighting);
for(auto& l: lights2){
w.draw(*l);
}
if(glow){
if(brush == RADIAL){
w.draw(radialLight);
}else if(brush == DIRECTED){
w.draw(directedLight);
}
}
w.draw(edgeVertices);
drawBrush();
w.display();
sf::Time dt = clock.restart();
int fps = int(std::round(1.f/dt.asSeconds()));
w.setTitle("Candle demo ["
+ std::to_string(fps)
+ " fps: "
+ std::to_string(dt.asMilliseconds())
+ " ms] ("
+ std::to_string(lights1.size() + (brush==RADIAL || brush==DIRECTED))
+ " Light/s "
+ std::to_string(edgePool.size())
+ " Edge/s)");
}
}
};
int App::Button::BC = 0;
sf::Color App::Button::buttonA1({50,50,250,255});
sf::Color App::Button::buttonA2({40,40,40,255});
sf::Color App::Button::buttonZ1({50,50,50,255});
sf::Color App::Button::buttonZ2({20,20,20,255});
/*
* MAIN
*/
int main(){
App app;
app.mainLoop();
return 0;
}