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#pragma once
#include "ofMain.h"
#include "ofxSvg.h"
#include "ofxHelios.h"
#include "colourPolyline.h"
class glyph{
public:
glyph(char c,float w,vector<ofPolyline> lines){
glyph(c,w,lines,ofColor(0,0,0));
}
glyph(char c,float w,vector<ofPolyline> lines,ofColor col){
code=c;
width=w;
outline=lines;
colour=col;
}
void draw(float x, float y){
ofSetColor(colour);
ofPushMatrix();
ofTranslate(x,y);
for (auto& v:outline) v.draw();
ofPopMatrix();
}
void randomiseColour(){
colour=ofColor::fromHsb(ofRandom(255.0),225,255);
}
char code;
float width;
vector<ofPolyline> outline;
ofColor colour;
};
class glyphWord{
public:
glyphWord(){amount=1.0f;}
vector<glyph> glyphs;
float amount;
};
class glyphbanner{
ofXml SVGFont;
vector<glyphWord> words;
vector<colourPolyline> outlines;
ofVec2f centre;
float lastUpdateTime;
float enspace;
vector<string> split(string s) {
size_t pos_start = 0, pos_end;
string token;
vector<string> res;
while ((pos_end = s.find (" ", pos_start)) != string::npos) {
token = s.substr (pos_start, pos_end - pos_start);
pos_start = pos_end + 1;
res.push_back (token);
}
res.push_back (s.substr (pos_start));
return res;
}
public:
glyphbanner(){};
void init(string message){
createWords(message);
lastUpdateTime=ofGetElapsedTimef();
}
int length(){
int l=0;
for (auto& w:words) {
l+=w.glyphs.size();
}
return l+max(0,(int)words.size()-1);
}
float width(){
float _w=0.0f;
for (auto& w:words) {
for (auto& g:w.glyphs) _w+=g.width;
}
return _w+max((float)(words.size()-1)*enspace,0.0f);
}
string text(){
string s;
for (auto& w:words) {
for (auto& g:w.glyphs) s+=ofToString(g.code);
}
return s;
}
void loadFont(filesystem::path path){
if( SVGFont.load(path) ){
vector<glyphWord> w=words;
clear();
createWords(w);
enspace=getGlyph(' ').width;
ofLog()<<"loaded "<<path.stem().string();
}else{
ofLog()<<"unable to load "<<path<<" check data/ folder";
}
}
void createWords(string message){
clear();
vector<string> m=split(message);
for (auto& word: m){
glyphWord w;
for (auto& c: word){
w.glyphs.push_back(getGlyph(c,ofColor::fromHsb(ofRandom(255.0),225,255)));
}
words.push_back(w);
}
}
void createWords(vector<glyphWord> _words){
clear();
for (auto& _w:_words) {
glyphWord w;
for (auto& g: _w.glyphs){
w.glyphs.push_back(getGlyph(g.code,g.colour));
}
words.push_back(w);
}
}
glyph getGlyph(char c,ofColor col=ofColor(255,255,255)){
vector<ofPolyline> shapes;
ofPolyline shape;
string elementPath = "/svg/defs/font/glyph[@unicode='"+ofToString(c)+"']";
if(SVGFont.findFirst(elementPath) == 0 ){
elementPath = "/svg/defs/font/glyph[@unicode='?']";
}
ofXml xmlElement = SVGFont.findFirst(elementPath);
float charWidth = ofToFloat(xmlElement.getAttribute("horiz-adv-x").getValue());
vector<string> splitGlyphPath = ofSplitString(xmlElement.getAttribute("d").getValue(), " ");//glyph path data in SVG looks like this: "M 139 -9.45 L 230 18.9 L 299 22.1 L 227 25.2"
for(int i=0; i<splitGlyphPath.size(); i+=3){
if(splitGlyphPath[i] == "M"){
if (shape.size()) {
shapes.push_back(shape);
shape.clear();
}
shape.addVertex(ofToFloat(splitGlyphPath[i+1]), ofToFloat(splitGlyphPath[i+2]));
}else if(splitGlyphPath[i] == "L"){
shape.lineTo(ofToFloat(splitGlyphPath[i+1]), ofToFloat(splitGlyphPath[i+2]));
}
}
if (shape.size()) shapes.push_back(shape);
return glyph(c,charWidth,shapes,col);
}
void addGlyph(char g,ofColor c){
if (g==' ') words.push_back(glyphWord());
else {
words[words.size()-1].glyphs.push_back(getGlyph(g,c));
}
}
void removeGlyph(){
if (words.size()){
glyphWord lw=words[words.size()-1];
lw.glyphs.pop_back();
if (!lw.glyphs.size()){
words.pop_back();
}
}
}
void clear(){words.clear();}
void update(float period=1.0f){
float t=ofGetElapsedTimef()/period;
int theword=int(t)%words.size();
float segment=t-int(t);
//calculate params for word/letter anim
for (int i=0;i<words.size();i++){
words[i].amount=(i==theword?sin(segment*3.1415):0);
for (auto& g:words[i].glyphs){
if (ofRandom(period)<0.1) {
g.randomiseColour();
}
}
}
}
vector<colourPolyline>& getOutlines(float s=1.0f){
outlines.clear();
float p=(-width())/2;
for (auto& w:words){
for (auto& g:w.glyphs){
if (w.amount>0.0f){
for (auto& o:g.outline){
auto q=o;
q.scale(s,-s);
q.translate(glm::vec3(p*s,0,0));
outlines.push_back(colourPolyline(q,g.colour*w.amount));
}
}
p+=g.width;
}
p+=enspace;
}
return outlines;
}
};
class ofApp : public ofBaseApp{
public:
void setup();
void update();
void draw();
void exit();
void keyPressed(ofKeyEventArgs &keyargs);
void keyReleased(int key);
void mouseMoved(int x, int y );
void mouseDragged(int x, int y, int button);
void mousePressed(int x, int y, int button);
void mouseReleased(int x, int y, int button);
void mouseEntered(int x, int y);
void mouseExited(int x, int y);
void windowResized(int w, int h);
void dragEvent(ofDragInfo dragInfo);
void gotMessage(ofMessage msg);
ofxHelios laser;
ofDirectory fonts;
int currentFont;
string displaytext;
glyphbanner banner;
};
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