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Copy pathProcessing.h
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3186 lines (2810 loc) · 164 KB
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#pragma once
#if __has_include("stb_truetype.h") && !defined(PROCESSING_HAS_STB_TRUETYPE)
# define PROCESSING_HAS_STB_TRUETYPE 1
#endif
#if PROCESSING_HAS_STB_TRUETYPE
// Include stb_truetype header-only (no implementation) for type definitions
# ifndef STB_TRUETYPE_IMPLEMENTATION
# include "stb_truetype.h"
# endif
#endif
#ifndef _WIN32
#include <dirent.h>
#endif
#include <functional>
// =============================================================================
// Processing.h -- processing-cpp API
// =============================================================================
// processing-cpp is a C++ creative coding framework inspired by Processing (Java).
// It exposes a familiar draw-loop API backed by OpenGL/GLFW/GLEW.
//
// HOW TO USE:
// 1. Include this header in your sketch file.
// 2. Inside namespace Processing { ... } define:
// void setup() { size(640,360); }
// void draw() { background(0); ellipse(mouseX,mouseY,40,40); }
// 3. Compile with Processing.cpp and link against GLFW + GLEW + OpenGL.
//
// FILE STRUCTURE:
// Processing.h -- This file. API declarations, inline helpers, classes.
// Processing.cpp -- Implementation of all declared functions.
// Platform.h -- OS abstraction (file dialogs, serial, process, sleep).
// IDE.cpp -- The processing-cpp IDE (sketch editor, build, run, terminal).
// =============================================================================
// ---------------------------------------------------------------------------
// Platform shim (must come first; provides termios/glob stubs on Windows)
// ---------------------------------------------------------------------------
#if __has_include("Platform.h")
# include "Platform.h"
#endif
// ---------------------------------------------------------------------------
// M_PI: Windows (MinGW) only defines this when _USE_MATH_DEFINES is set
// before including <cmath>. We also provide a fallback just in case.
// ---------------------------------------------------------------------------
#ifndef _USE_MATH_DEFINES
# define _USE_MATH_DEFINES
#endif
#include <cmath>
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
// ---------------------------------------------------------------------------
// Standard library includes
// ---------------------------------------------------------------------------
#include <iostream>
#include <sstream>
#include <fstream>
#include <regex>
#include <cstdlib>
#include <ctime>
#include <chrono>
#include <string>
#include <vector>
#include <thread>
#include <functional>
#include <algorithm>
#include <memory>
#include <map>
#include <set>
#include <random>
#include <stack>
#include <queue>
#include <list>
#include <deque>
#include <tuple>
#include <optional>
#include <variant>
#include <numeric>
#include <iterator>
#include <memory>
#include <regex>
#include <iomanip>
#include <unordered_map>
#include <unordered_set>
// ---------------------------------------------------------------------------
// OpenGL / GLFW
// ---------------------------------------------------------------------------
// Java-style string + number concatenation
inline std::string operator+(const std::string& s, int n) { return s + std::to_string(n); }
inline std::string operator+(const std::string& s, long n) { return s + std::to_string(n); }
inline std::string operator+(const std::string& s, size_t n) { return s + std::to_string(n); }
inline std::string operator+(const std::string& s, float n) { return s + std::to_string(n); }
inline std::string operator+(const std::string& s, double n) { return s + std::to_string(n); }
inline std::string operator+(const std::string& s, char c) { return s + std::string(1, c); }
inline std::string operator+(int n, const std::string& s) { return std::to_string(n) + s; }
inline std::string operator+(long n, const std::string& s) { return std::to_string(n) + s; }
inline std::string operator+(size_t n, const std::string& s) { return std::to_string(n) + s; }
inline std::string operator+(float n, const std::string& s) { return std::to_string(n) + s; }
inline std::string operator+(double n, const std::string& s) { return std::to_string(n) + s; }
inline std::string operator+(char c, const std::string& s) { return std::string(1, c) + s; }
#include <GL/glew.h>
#include <GLFW/glfw3.h>
namespace Processing {
// =============================================================================
// PVECTOR -- 2D/3D vector with all standard Processing operations
// =============================================================================
class PVector {
public:
float x, y, z;
// Constructors
PVector() : x(0), y(0), z(0) {}
PVector(float x, float y) : x(x), y(y), z(0) {}
PVector(float x, float y, float z): x(x), y(y), z(z) {}
// Setters
PVector& set(float _x, float _y, float _z=0) { x=_x; y=_y; z=_z; return *this; }
PVector& set(const PVector& v) { x=v.x; y=v.y; z=v.z; return *this; }
PVector copy() const { return PVector(x, y, z); }
// Magnitude
float mag() const { return std::sqrt(x*x + y*y + z*z); }
float magSq() const { return x*x + y*y + z*z; }
// Arithmetic (in-place)
PVector& add(float _x, float _y, float _z=0) { x+=_x; y+=_y; z+=_z; return *this; }
PVector& add(const PVector& v) { x+=v.x; y+=v.y; z+=v.z; return *this; }
PVector& sub(float _x, float _y, float _z=0) { x-=_x; y-=_y; z-=_z; return *this; }
PVector& sub(const PVector& v) { x-=v.x; y-=v.y; z-=v.z; return *this; }
PVector& mult(float s) { x*=s; y*=s; z*=s; return *this; }
PVector& div(float s) { x/=s; y/=s; z/=s; return *this; }
// Arithmetic (static, returns new vector)
static PVector add(const PVector& a, const PVector& b) { return PVector(a.x+b.x, a.y+b.y, a.z+b.z); }
static PVector sub(const PVector& a, const PVector& b) { return PVector(a.x-b.x, a.y-b.y, a.z-b.z); }
static PVector mult(const PVector& v, float s) { return PVector(v.x*s, v.y*s, v.z*s); }
static PVector div(const PVector& v, float s) { return PVector(v.x/s, v.y/s, v.z/s); }
// Operators
PVector operator+(const PVector& v) const { return PVector(x+v.x, y+v.y, z+v.z); }
PVector operator-(const PVector& v) const { return PVector(x-v.x, y-v.y, z-v.z); }
PVector operator*(float s) const { return PVector(x*s, y*s, z*s); }
PVector operator/(float s) const { return PVector(x/s, y/s, z/s); }
PVector& operator+=(const PVector& v) { return add(v); }
PVector& operator-=(const PVector& v) { return sub(v); }
PVector& operator*=(float s) { return mult(s); }
PVector& operator/=(float s) { return div(s); }
bool operator==(const PVector& v) const { return x==v.x && y==v.y && z==v.z; }
bool operator!=(const PVector& v) const { return !(*this==v); }
// Dot / cross product
float dot(const PVector& v) const { return x*v.x + y*v.y + z*v.z; }
float dot(float _x, float _y, float _z=0) const { return x*_x + y*_y + z*_z; }
static float dot(const PVector& a, const PVector& b) { return a.dot(b); }
PVector cross(const PVector& v) const { return PVector(y*v.z-z*v.y, z*v.x-x*v.z, x*v.y-y*v.x); }
static PVector cross(const PVector& a, const PVector& b) { return a.cross(b); }
// Normalization / limits
PVector& normalize() { float m=mag(); if(m>0) div(m); return *this; }
PVector normalized() const { PVector v(*this); return v.normalize(); }
PVector& limit(float mx) { if(magSq()>mx*mx){ normalize(); mult(mx); } return *this; }
PVector& setMag(float m) { normalize(); mult(m); return *this; }
// Distance / angle
float dist(const PVector& v) const { float dx=x-v.x,dy=y-v.y,dz=z-v.z; return std::sqrt(dx*dx+dy*dy+dz*dz); }
static float dist(const PVector& a, const PVector& b) { return a.dist(b); }
float heading() const { return std::atan2(y, x); }
float angleBetween(const PVector& v) const {
float m = mag() * v.mag();
if (m == 0) return 0;
float c = dot(v) / m;
c = c < -1 ? -1 : (c > 1 ? 1 : c);
return std::acos(c);
}
static float angleBetween(const PVector& a, const PVector& b) { return a.angleBetween(b); }
// Mutation
PVector& rotate(float t) { float c=std::cos(t),s=std::sin(t),nx=x*c-y*s,ny=x*s+y*c; x=nx; y=ny; return *this; }
PVector& lerp(const PVector& v, float t) { x+=(v.x-x)*t; y+=(v.y-y)*t; z+=(v.z-z)*t; return *this; }
PVector& lerp(float _x, float _y, float _z, float t) { x+=(_x-x)*t; y+=(_y-y)*t; z+=(_z-z)*t; return *this; }
static PVector lerp(const PVector& a, const PVector& b, float t) {
return PVector(a.x+(b.x-a.x)*t, a.y+(b.y-a.y)*t, a.z+(b.z-a.z)*t);
}
// Static constructors
static PVector fromAngle(float a, float len=1.0f) { return PVector(std::cos(a)*len, std::sin(a)*len); }
static PVector random2D() {
float a = static_cast<float>(rand()) / RAND_MAX * 6.28318f;
return fromAngle(a);
}
static PVector random3D() {
float t = static_cast<float>(rand()) / RAND_MAX * 6.28318f;
float p = std::acos(2.0f * static_cast<float>(rand()) / RAND_MAX - 1.0f);
return PVector(std::sin(p)*std::cos(t), std::sin(p)*std::sin(t), std::cos(p));
}
std::string toString() const {
std::ostringstream ss;
ss << "[ " << x << ", " << y << ", " << z << " ]";
return ss.str();
}
};
// =============================================================================
// PCOLOR -- RGBA color with HSB conversion and blend operations
// =============================================================================
class PColor {
public:
float r, g, b, a;
PColor() : r(0), g(0), b(0), a(255) {}
PColor(float gray) : r(gray),g(gray),b(gray),a(255) {}
PColor(float gray, float a) : r(gray),g(gray),b(gray),a(a) {}
PColor(float r, float g, float b) : r(r), g(g), b(b), a(255) {}
PColor(float r, float g, float b, float a) : r(r), g(g), b(b), a(a) {}
// Construct from packed ARGB integer (0xAARRGGBB)
explicit PColor(unsigned int argb)
: r((argb>>16)&0xFF), g((argb>>8)&0xFF), b(argb&0xFF), a((argb>>24)&0xFF) {}
// Pack to ARGB integer
unsigned int toARGB() const {
int ri=(int)std::fmax(0,std::fmin(255,r));
int gi=(int)std::fmax(0,std::fmin(255,g));
int bi=(int)std::fmax(0,std::fmin(255,b));
int ai=(int)std::fmax(0,std::fmin(255,a));
return (unsigned int)((ai<<24)|(ri<<16)|(gi<<8)|bi);
}
// Normalised [0..1] accessors
float rf() const { return r/255.0f; }
float gf() const { return g/255.0f; }
float bf() const { return b/255.0f; }
float af() const { return a/255.0f; }
PColor& set(float _r, float _g, float _b, float _a=255) { r=_r; g=_g; b=_b; a=_a; return *this; }
PColor& set(float gray, float _a=255) { r=g=b=gray; a=_a; return *this; }
PColor copy() const { return PColor(r, g, b, a); }
// HSB conversions
float hue() const {
float rf_=r/255.f, gf_=g/255.f, bf_=b/255.f;
float mx=std::fmax(rf_,std::fmax(gf_,bf_));
float mn=std::fmin(rf_,std::fmin(gf_,bf_));
float d=mx-mn;
if (d==0) return 0;
float h = (mx==rf_) ? (gf_-bf_)/d : (mx==gf_) ? 2.f+(bf_-rf_)/d : 4.f+(rf_-gf_)/d;
h *= 60.f;
if (h < 0) h += 360.f;
return h;
}
float saturation() const {
float mx=std::fmax(r,std::fmax(g,b));
float mn=std::fmin(r,std::fmin(g,b));
return mx==0 ? 0 : ((mx-mn)/mx)*100.f;
}
float brightness() const { return std::fmax(r,std::fmax(g,b))/255.f*100.f; }
static PColor fromHSB(float h, float s, float bv, float a=255) {
s /= 100.f; bv /= 100.f;
if (s == 0) { float v=bv*255.f; return PColor(v,v,v,a); }
float hh=std::fmod(h,360.f)/60.f;
int i=(int)hh;
float f=hh-i, p=bv*(1-s), q=bv*(1-s*f), t=bv*(1-s*(1-f));
float rv,gv,blv;
switch(i){
case 0: rv=bv;gv=t; blv=p; break;
case 1: rv=q; gv=bv;blv=p; break;
case 2: rv=p; gv=bv;blv=t; break;
case 3: rv=p; gv=q; blv=bv; break;
case 4: rv=t; gv=p; blv=bv; break;
default:rv=bv;gv=p; blv=q; break;
}
return PColor(rv*255,gv*255,blv*255,a);
}
// Arithmetic operators
PColor operator+(const PColor& o) const { return PColor(r+o.r, g+o.g, b+o.b, a+o.a); }
PColor operator-(const PColor& o) const { return PColor(r-o.r, g-o.g, b-o.b, a-o.a); }
PColor operator*(float s) const { return PColor(r*s, g*s, b*s, a*s); }
PColor operator/(float s) const { return PColor(r/s, g/s, b/s, a/s); }
PColor& operator+=(const PColor& o) { r+=o.r; g+=o.g; b+=o.b; a+=o.a; return *this; }
PColor& operator-=(const PColor& o) { r-=o.r; g-=o.g; b-=o.b; a-=o.a; return *this; }
PColor& operator*=(float s) { r*=s; g*=s; b*=s; a*=s; return *this; }
PColor& operator/=(float s) { r/=s; g/=s; b/=s; a/=s; return *this; }
bool operator==(const PColor& o) const { return r==o.r && g==o.g && b==o.b && a==o.a; }
bool operator!=(const PColor& o) const { return !(*this==o); }
// Utility
static PColor lerp(const PColor& c1, const PColor& c2, float t) {
return PColor(c1.r+(c2.r-c1.r)*t, c1.g+(c2.g-c1.g)*t, c1.b+(c2.b-c1.b)*t, c1.a+(c2.a-c1.a)*t);
}
PColor& clamp() {
r=std::fmax(0,std::fmin(255,r)); g=std::fmax(0,std::fmin(255,g));
b=std::fmax(0,std::fmin(255,b)); a=std::fmax(0,std::fmin(255,a));
return *this;
}
PColor multRGB(float s) const { return PColor(r*s, g*s, b*s, a); }
// Blend modes (return new color)
static PColor blend(const PColor& src, const PColor& dst) {
float sa = src.a/255.f;
return PColor(src.r*sa+dst.r*(1-sa), src.g*sa+dst.g*(1-sa), src.b*sa+dst.b*(1-sa), 255);
}
static PColor add(const PColor& a, const PColor& b) {
return PColor(std::fmin(255,a.r+b.r), std::fmin(255,a.g+b.g), std::fmin(255,a.b+b.b), a.a);
}
static PColor multiply(const PColor& a, const PColor& b) {
return PColor((a.r/255.f)*b.r, (a.g/255.f)*b.g, (a.b/255.f)*b.b, a.a);
}
static PColor screen(const PColor& a, const PColor& b) {
auto sc=[](float x,float y){ return 255-(255-x)*(255-y)/255.f; };
return PColor(sc(a.r,b.r), sc(a.g,b.g), sc(a.b,b.b), a.a);
}
float brightness255() const { return std::fmax(r, std::fmax(g, b)); }
std::string toString() const {
std::ostringstream ss;
ss << "PColor(" << r << ", " << g << ", " << b << ", " << a << ")";
return ss.str();
}
};
// Forward declarations so PColor overloads compile below class definitions
void fill(const PColor& c);
void stroke(const PColor& c);
void background(const PColor& c);
void tint(const PColor& c);
// =============================================================================
// IMAGE FILTER CONSTANTS
// =============================================================================
static constexpr int GRAY = 1;
static constexpr int INVERT = 2;
static constexpr int THRESHOLD = 3;
static constexpr int BLUR_FILTER = 4;
static constexpr int POSTERIZE = 5;
// =============================================================================
// PIMAGE -- Pixel buffer backed by an OpenGL texture
// =============================================================================
class PImage {
public:
int width = 0;
int height = 0;
std::vector<unsigned int> pixels;
GLuint texID = 0;
bool dirty = false;
PImage() = default;
PImage(int w, int h) {
// Guard against bad dimensions from corrupted files or failed loads
if (w > 0 && h > 0 && w < 16384 && h < 16384) {
width = w; height = h;
pixels.assign((size_t)w * h, 0xFF000000);
}
}
// Pixel read/write (bounds-checked)
unsigned int get(int x, int y) const {
if (x<0||x>=width||y<0||y>=height) return 0;
return pixels[y*width+x];
}
void set(int x, int y, unsigned int c) {
if (x<0||x>=width||y<0||y>=height) return;
pixels[y*width+x] = c;
dirty = true;
}
// These mirror the Processing Java API; dirty flag is used by updatePixels()
void loadPixels() {}
void updatePixels() { dirty = true; }
// Upload CPU pixels to the GPU texture
void uploadTexture(); // defined in Processing.cpp
void resize(int w, int h) { width=w; height=h; pixels.assign(w*h, 0xFF000000); dirty=true; }
// Apply an image filter to all pixels
void filter(int mode) {
for (auto& p : pixels) {
int r=(p>>16)&0xFF, g=(p>>8)&0xFF, b=p&0xFF, a=(p>>24)&0xFF;
if (mode == GRAY) { int gr=(r+g+b)/3; p=(a<<24)|(gr<<16)|(gr<<8)|gr; }
else if (mode == INVERT) { p=(a<<24)|((255-r)<<16)|((255-g)<<8)|(255-b); }
else if (mode == THRESHOLD) { int gr=(r+g+b)/3; int t=gr>127?255:0; p=(a<<24)|(t<<16)|(t<<8)|t; }
}
dirty = true;
}
// Extract a sub-image
PImage get(int x, int y, int w, int h) const {
PImage out(w, h);
for (int iy=0; iy<h; iy++)
for (int ix=0; ix<w; ix++)
out.pixels[iy*w+ix] = get(x+ix, y+iy);
return out;
}
// Copy from another image with scaling
void copy(const PImage& src, int sx, int sy, int sw, int sh, int dx, int dy, int dw, int dh) {
for (int iy=0; iy<dh; iy++)
for (int ix=0; ix<dw; ix++) {
int srcX = sx+(int)(ix*(float)sw/dw);
int srcY = sy+(int)(iy*(float)sh/dh);
set(dx+ix, dy+iy, src.get(srcX, srcY));
}
dirty = true;
}
// Apply alpha mask from another grayscale image
void mask(const PImage& m) {
for (int i=0; i<width*height && i<(int)m.pixels.size(); i++) {
int a = (m.pixels[i]>>16)&0xFF;
pixels[i] = (pixels[i]&0x00FFFFFF)|(a<<24);
}
dirty = true;
}
void mask(const PImage* m) { if (m) mask(*m); }
// Destructor frees GPU texture
virtual ~PImage() { if (texID) glDeleteTextures(1, &texID); }
// Non-copyable (owns GPU resource -- use PImage* for assignment)
PImage(const PImage&) = delete;
PImage& operator=(const PImage&) = delete;
// Movable
PImage(PImage&& o) noexcept
: width(o.width), height(o.height), pixels(std::move(o.pixels)),
texID(o.texID), dirty(o.dirty) { o.texID=0; }
};
// =============================================================================
// PGRAPHICS -- Off-screen render target (framebuffer object)
// =============================================================================
class PGraphics : public PImage {
public:
GLuint fbo = 0; // framebuffer object
GLuint rbo = 0; // renderbuffer (depth+stencil)
bool active = false;
// Independent per-buffer style state. Real Processing's PGraphics has
// its OWN fill/stroke/text/etc. settings, completely separate from the
// main canvas's -- setting fill() on the main canvas must never affect
// a PGraphics buffer, and vice versa. Previously every PGraphics method
// forwarded directly to the single global PApplet::g_papplet singleton,
// meaning style state silently bled between the main canvas and every
// buffer (e.g. a thick green main-canvas stroke would incorrectly show
// up on an ellipse drawn inside a buffer that never set its own
// stroke). beginDraw()/endDraw() now swap PApplet's current style out
// for this buffer's OWN remembered style, and swap it back after,
// exactly mirroring how Java's PGraphics keeps independent state.
struct StyleSnapshot {
// Defaults match PApplet's own real defaults (white fill, black
// stroke) -- these are also real Processing's documented
// beginDraw() defaults ("Sets the default properties"), NOT an
// arbitrary choice. The earlier version of this struct had
// fillR=0 (black fill), which is backwards -- every fresh
// PGraphics buffer with no explicit fill()/stroke() calls should
// look exactly like a freshly created Processing sketch: white
// fill, black stroke, weight 1.
float fillR=1, fillG=1, fillB=1, fillA=1;
float strokeR=0, strokeG=0, strokeB=0, strokeA=1;
float strokeW=1;
bool doFill=true, doStroke=true, smoothing=true;
// BUG FIX: these were raw 0/0/0 literals, which silently meant
// CORNER mode (CORNER=0) for ellipseMode specifically, when real
// Processing's actual default is CENTER (=3). That made every
// fresh PGraphics buffer's ellipse() calls interpret their first
// two arguments as the bounding box's top-left corner instead of
// its center, shifting every default-mode ellipse by half its
// width/height toward the bottom-right. rectMode's and
// imageMode's real defaults ARE actually CORNER (=0), so those
// two were correct by coincidence -- only currentEllipseMode
// needed the real CENTER constant.
// Using literal values, not the CORNER/CENTER named constants:
// those constants are declared later in this file, after
// PGraphics's own definition, so they're not in scope yet here.
// CORNER=0, CENTER=3 (see the static constexpr declarations
// further down in this file).
int currentRectMode=0 /*CORNER*/, currentEllipseMode=3 /*CENTER*/, currentImageMode=0 /*CORNER*/;
float tintR=1, tintG=1, tintB=1, tintA=1;
bool doTint=false;
int colorModeVal=0;
float colorMaxH=255.f, colorMaxS=255.f, colorMaxB=255.f, colorMaxA=255.f;
float g_textSize=14.0f;
int g_textAlignX=0, g_textAlignY=0;
float g_textLeading=0.0f;
bool initialized=false; // false until beginDraw() runs once and sets real Processing defaults
};
StyleSnapshot myStyle; // this buffer's OWN persistent style
StyleSnapshot _savedMainStyle; // main canvas's style, stashed during beginDraw()..endDraw()
// Multisampled render target: PGraphics now matches real Processing's
// default antialiasing (smooth(2) on P2D/P3D) by rendering into a
// multisample renderbuffer-backed FBO, then resolving (blitting) down
// into the plain texture-backed FBO that drawPGraphicsRect samples
// from. Without this, the main canvas's window-level MSAA never
// applied to off-screen buffers at all.
GLuint msaaFbo = 0;
GLuint msaaColorRbo = 0;
GLuint msaaDepthRbo = 0;
int samples = 0; // 0 = no multisampling
PGraphics() = default;
PGraphics(int w, int h) : PImage(w, h) {
// Can't reach PApplet::g_papplet here -- PApplet's complete type
// isn't available yet at this point in the header (PGraphics is
// defined before it). Default directly to real Processing's own
// P2D/P3D default (smooth(2)) rather than reaching across that
// forward-reference gap. A sketch wanting a different level for
// its buffers can extend this later if needed.
samples = 2;
// Resolve target: plain, non-multisampled FBO + texture --
// unchanged from before, just filled via a blit-resolve now.
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
if (texID == 0) glGenTextures(1, &texID);
glBindTexture(GL_TEXTURE_2D, texID);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texID, 0);
glGenRenderbuffers(1, &rbo);
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, w, h);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rbo);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Multisample render target: only created if antialiasing was
// actually requested. beginDraw() binds THIS one; endDraw() blits
// it down into the resolve target above.
if (samples > 0) {
glGenFramebuffers(1, &msaaFbo);
glBindFramebuffer(GL_FRAMEBUFFER, msaaFbo);
glGenRenderbuffers(1, &msaaColorRbo);
glBindRenderbuffer(GL_RENDERBUFFER, msaaColorRbo);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, GL_RGBA8, w, h);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, msaaColorRbo);
glGenRenderbuffers(1, &msaaDepthRbo);
glBindRenderbuffer(GL_RENDERBUFFER, msaaDepthRbo);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, samples, GL_DEPTH24_STENCIL8, w, h);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, msaaDepthRbo);
GLenum msaaStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (msaaStatus != GL_FRAMEBUFFER_COMPLETE) {
glDeleteFramebuffers(1, &msaaFbo); msaaFbo = 0;
glDeleteRenderbuffers(1, &msaaColorRbo); msaaColorRbo = 0;
glDeleteRenderbuffers(1, &msaaDepthRbo); msaaDepthRbo = 0;
samples = 0;
}
fprintf(stderr, "=== DEBUG PGraphics MSAA setup: samples=%d msaaFbo=%u w=%d h=%d ===\n", samples, msaaFbo, w, h);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
}
GLint savedViewport[4] = {};
void beginDraw(); // defined after PApplet (needs its complete type for style swap)
void _endDrawImpl(); // body of endDraw(), out-of-line for the same reason
void endDraw() { _endDrawImpl(); }
// Drawing methods forwarded to Processing -- implemented after full decls
void background(float g); void background(float r, float g, float b); void background(float r, float g, float b, float a);
void fill(float g); void fill(float r, float g, float b); void fill(float r, float g, float b, float a);
void noFill(); void stroke(float g); void stroke(float r, float g, float b); void noStroke();
void strokeWeight(float w);
void ellipse(float x, float y, float w, float h);
void rect(float x, float y, float w, float h);
void line(float x1, float y1, float x2, float y2);
void point(float x, float y);
void triangle(float x1,float y1,float x2,float y2,float x3,float y3);
void text(const std::string& s, float x, float y);
void textSize(float size);
void textAlign(int alignX);
void textAlign(int alignX, int alignY);
void translate(float x, float y); void rotate(float a); void scale(float s);
void pushMatrix(); void popMatrix();
void beginShape(); void endShape(int mode=0); void vertex(float x, float y);
void clear();
~PGraphics() {
if (fbo) glDeleteFramebuffers(1, &fbo);
if (rbo) glDeleteRenderbuffers(1, &rbo);
}
PGraphics(const PGraphics&) = delete;
PGraphics& operator=(const PGraphics&) = delete;
// Allow assignment from pointer (PGraphics pg; pg = createGraphics(w,h))
PGraphics& operator=(PGraphics* p) {
if(p && p!=this){
// Transfer ownership. This previously only moved fbo/rbo/
// texID/width/height/active -- missing the MSAA fields added
// later (msaaFbo/msaaColorRbo/msaaDepthRbo/samples) meant a
// freshly created buffer's real multisample resources were
// silently discarded the moment "PGraphics pg; pg =
// createGraphics(...);" ran, leaving pg with samples=0 even
// though the temporary object had samples=2 -- antialiasing
// was being thrown away before the sketch ever got to draw
// anything. Also missing: myStyle/_savedMainStyle (the
// independent per-buffer style state added today), which
// would have reset to defaults on every reassignment instead
// of being the NEW buffer's own fresh defaults as intended --
// actually correct to take p's (a fresh buffer SHOULD start
// with fresh defaults), but worth being explicit about so
// future fields don't get silently dropped the same way.
if(fbo) glDeleteFramebuffers(1,&fbo);
if(rbo) glDeleteRenderbuffers(1,&rbo);
if(msaaFbo) glDeleteFramebuffers(1,&msaaFbo);
if(msaaColorRbo) glDeleteRenderbuffers(1,&msaaColorRbo);
if(msaaDepthRbo) glDeleteRenderbuffers(1,&msaaDepthRbo);
fbo=p->fbo; rbo=p->rbo; texID=p->texID;
msaaFbo=p->msaaFbo; msaaColorRbo=p->msaaColorRbo; msaaDepthRbo=p->msaaDepthRbo;
samples=p->samples;
width=p->width; height=p->height;
active=p->active;
myStyle=p->myStyle; _savedMainStyle=p->_savedMainStyle;
p->fbo=0; p->rbo=0; p->texID=0;
p->msaaFbo=0; p->msaaColorRbo=0; p->msaaDepthRbo=0;
delete p;
}
return *this;
}
};
// =============================================================================
// =============================================================================
// Aliases: 'width' and 'height' are the canonical Processing names
// width/height always equal what size() set -- never corrupted by WM tile resize.
// =============================================================================
// =============================================================================
// =============================================================================
// =============================================================================
// Define any of these in your sketch; unimplemented ones are safely skipped.
//
// On Linux/macOS: declared __attribute__((weak)) so undefined ones link as nullptr.
// On Windows (MinGW): weak declarations don't work; instead, _wireCallbacksFn is
// set at the bottom of IDE.cpp/sketch to point to a function that wires
// all _on* function pointers. See the Windows Event Wiring section of IDE.cpp.
// ---------------------------------------------------------------------------
// Processing event callbacks -- define whichever ones your sketch needs.
// Processing.cpp uses _on* function pointers; wireCallbacks() in
// Sketch_run.cpp assigns only the ones the sketch defines.
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
// Internal event function pointers (set by run() via the callbacks above).
// Exposed here so IDE.cpp's wireCallbacks() can assign them.
// ---------------------------------------------------------------------------
#include <functional>
// ---------------------------------------------------------------------------
// Windows-only: raw POD function pointer set by IDE.cpp during static init.
// POD is guaranteed zero-initialized before any constructor runs, so writing
// to it from a static initializer in another translation unit is always safe.
// Processing::run() calls it (if non-null) after setup() to wire all _on* ptrs.
// ---------------------------------------------------------------------------
// =============================================================================
// =============================================================================
// =============================================================================
// =============================================================================
// =============================================================================
// =============================================================================
// =============================================================================
// CONSTANTS
// =============================================================================
// Mouse buttons
// mouseButton is set to LEFT(37), RIGHT(39), or CENTER(3) when a button is pressed
// ---------------------------------------------------------------------------
// Processing reference constants
// Key codes match Java KeyEvent.VK_* values exactly.
// Mouse button constants match Processing's LEFT/CENTER/RIGHT.
// ---------------------------------------------------------------------------
// key == CODED when a non-ASCII special key is pressed; then check keyCode
static constexpr int CODED = 0xFF;
// Coded keys (keyCode values, Java KeyEvent.VK_*)
static constexpr int UP = 38;
static constexpr int DOWN = 40;
static constexpr int LEFT = 37; // arrow key AND left mouse button
static constexpr int RIGHT = 39; // arrow key AND right mouse button
static constexpr int ALT = 18;
static constexpr int CONTROL = 17;
static constexpr int SHIFT = 16;
static constexpr int HOME_KEY = 36;
static constexpr int END_KEY = 35;
static constexpr int PAGE_UP = 33;
static constexpr int PAGE_DOWN = 34;
static constexpr int F1_KEY = 112; static constexpr int F2_KEY = 113;
static constexpr int F3_KEY = 114; static constexpr int F4_KEY = 115;
static constexpr int F5_KEY = 116; static constexpr int F6_KEY = 117;
static constexpr int F7_KEY = 118; static constexpr int F8_KEY = 119;
static constexpr int F9_KEY = 120; static constexpr int F10_KEY = 121;
static constexpr int F11_KEY = 122; static constexpr int F12_KEY = 123;
// Non-coded keys: use `key` directly (not keyCode) for these
static constexpr char BACKSPACE = 8;
static constexpr char TAB = 9;
static constexpr char ENTER = 10; // PC/Unix enter key
// Undefine any system macros that might conflict
#ifdef RETURN
# undef RETURN
#endif
#ifdef DELETE
# undef DELETE
#endif
static constexpr int RETURN = 13; // Mac return key (same key as ENTER on most systems)
static constexpr int ESC = 27;
static constexpr int DELETE = 127;
// Mouse buttons (mouseButton variable, Java MouseEvent values)
static constexpr int CENTER = 3; // middle mouse button; also rectMode/ellipseMode CENTER
// Color modes
static constexpr int RGB = 1;
static constexpr int HSB = 2;
#define ARGB 3 /* createImage(w,h,ARGB) */
// Shape / rect / ellipse modes
static constexpr int CORNER = 0;
static constexpr int CORNERS = 1;
static constexpr int RADIUS = 2;
// Stroke caps and joins
static constexpr int ROUND = 10;
static constexpr int SQUARE = 11;
static constexpr int PROJECT = 12;
static constexpr int MITER = 13;
static constexpr int BEVEL = 14;
// beginShape() kinds
static constexpr int POINTS = 0;
static constexpr int LINES = 1;
static constexpr int TRIANGLES = 2;
static constexpr int TRIANGLE_FAN = 3;
static constexpr int TRIANGLE_STRIP = 4;
static constexpr int QUADS = 5;
static constexpr int QUAD_STRIP = 6;
static constexpr int CLOSE = 7;
// Text alignment
static constexpr int LEFT_ALIGN = 20;
static constexpr int RIGHT_ALIGN = 21;
static constexpr int TOP_ALIGN = 22;
static constexpr int BOTTOM_ALIGN = 23;
static constexpr int BASELINE = 24;
static constexpr int CENTER_ALIGN = 25;
// Blend modes
static constexpr int BLEND = 30;
static constexpr int ADD = 31;
static constexpr int SUBTRACT = 32;
static constexpr int MULTIPLY = 33;
static constexpr int SCREEN = 34;
static constexpr int DARKEST = 35;
static constexpr int LIGHTEST = 36;
static constexpr int DIFFERENCE = 37;
static constexpr int EXCLUSION = 38;
// Math constants (float precision)
static constexpr float PI = static_cast<float>(M_PI);
static constexpr float TWO_PI = static_cast<float>(M_PI * 2.0);
static constexpr float HALF_PI = static_cast<float>(M_PI / 2.0);
static constexpr float QUARTER_PI = static_cast<float>(M_PI / 4.0);
static constexpr float TAU = TWO_PI; // alias
// Renderer flags for size()
static constexpr int P2D = 2;
static constexpr int P3D = 3;
// Texture / image modes
static constexpr int IMAGE = 100;
static constexpr int NORMAL = 101;
static constexpr int CLAMP = 102;
static constexpr int REPEAT = 103;
// hint() flags
static constexpr int ENABLE_DEPTH_TEST = 1;
static constexpr int DISABLE_DEPTH_TEST = -1;
static constexpr int ENABLE_DEPTH_SORT = 2;
static constexpr int DISABLE_DEPTH_SORT = -2;
static constexpr int ENABLE_OPENGL_ERRORS = 3;
static constexpr int DISABLE_OPENGL_ERRORS = -3;
static constexpr int ENABLE_STROKE_PERSPECTIVE = 4;
static constexpr int DISABLE_STROKE_PERSPECTIVE= -4;
static constexpr int ENABLE_TEXTURE_MIPMAPS = 5;
static constexpr int DISABLE_TEXTURE_MIPMAPS = -5;
// Cursor shapes (map to GLFW)
static constexpr int ARROW = GLFW_ARROW_CURSOR;
static constexpr int CROSS = GLFW_CROSSHAIR_CURSOR;
static constexpr int HAND = GLFW_HAND_CURSOR; // GLFW_POINTING_HAND_CURSOR in 3.4+
static constexpr int MOVE = GLFW_HRESIZE_CURSOR; // GLFW_RESIZE_ALL_CURSOR in 3.4+
static constexpr int TEXT_CURSOR = GLFW_IBEAM_CURSOR;
static constexpr int WAIT = GLFW_VRESIZE_CURSOR; // GLFW_RESIZE_ALL_CURSOR in 3.4+
// =============================================================================
// TIMING -- inline so they compile anywhere without linking Processing.cpp
// =============================================================================
inline unsigned long millis() {
using namespace std::chrono;
static auto start = steady_clock::now();
return static_cast<unsigned long>(duration_cast<milliseconds>(steady_clock::now()-start).count());
}
inline int second() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_sec; }
inline int minute() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_min; }
inline int hour() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_hour; }
inline int day() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_mday; }
inline int month() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_mon+1; }
inline int year() { std::time_t t=std::time(nullptr); return std::localtime(&t)->tm_year+1900;}
// 'color' is a packed 32-bit ARGB integer, just like in Processing Java.
// Constructors respect the current colorMode setting (see colorMode()).
struct color {
unsigned int value;
color() : value(0xFF000000) {} // default: opaque black
color(unsigned int v) : value(v) {} // allows color pix = img->get(x,y)
// Defined in Processing.cpp so the colorMode globals are accessible.
//
// 3-arg and 4-arg int overloads were intentionally removed: they were
// pure pass-throughs that cast to float and called the exact same
// _makeColor() the float overloads call directly, so removing them
// changes no runtime behavior -- it only removes the possibility of
// ambiguous overload resolution on mixed-type calls like
// color(map(...), map(...), 50).
//
// 1-arg and 2-arg int overloads are KEPT: color(int) would otherwise be
// ambiguous between color(float) (grayscale) and color(unsigned int)
// (raw packed ARGB pixel value, e.g. color pix = img->get(x,y)) -- two
// different, equally-valid implicit conversions for the same int
// literal. color(int gray) as an EXACT match resolves that in favor
// of "grayscale", matching real Processing semantics.
color(int gray);
color(int gray, int a);
// Use explicit cast: color(0,153,204,(int)a) or color(0.f,153.f,204.f,a)
color(float gray);
color(float gray, float a);
color(float r, float g, float b);
color(float r, float g, float b, float a);
explicit operator unsigned int() const { return value; }
unsigned int toInt() const { return value; }
// In Processing Java, color IS int. Allow implicit color<->int conversion
// so sketches can write: int c = color(255); int c = lerpColor(a,b,t);
operator int() const { return (int)value; }
// fromRaw: convert raw int (Java color int) directly to color value
static color fromRaw(int v) { color c; c.value=(unsigned int)v; return c; }
bool operator==(const color& o) const { return value == o.value; }
bool operator!=(const color& o) const { return value != o.value; }
};
// Build a color value from components (respects colorMode)
// Pack raw 0-255 RGBA without colorMode (for internal use)
inline color colorVal(int r, int g, int b, int a=255) {
// Clamp to [0,255] -- don't wrap, which would cause dark artifacts
// when noise()*255 or other values slightly exceed 255
auto clamp8=[](int v){return v<0?0:v>255?255:v;};
return color((unsigned int)(((clamp8(a))<<24)|((clamp8(r))<<16)|((clamp8(g))<<8)|(clamp8(b))));
}
// Color component extractors
// =============================================================================
// PRINT / OUTPUT
// =============================================================================
template<typename T> inline void print(const T& v) { std::cout << v; std::cout.flush(); }
template<typename T> inline void println(const T& v) { std::cout << v << "\n"; std::cout.flush(); }
inline void println() { std::cout << "\n"; std::cout.flush(); }
template<typename T> inline void printArray(const std::vector<T>& a) {
for (size_t i=0; i<a.size(); i++) std::cout << "[" << i << "] " << a[i] << "\n";
}
// =============================================================================
// STRING UTILITIES
// =============================================================================
inline std::string str(int v) { return std::to_string(v); }
inline std::string str(float v) { return std::to_string(v); }
inline std::string str(bool v) { return v ? "true" : "false"; }
inline std::string str(char v) { return std::string(1, v); }
inline bool toBoolean(const std::string& s) { return s=="true"||s=="1"||s=="yes"; }
inline int toInt(const std::string& s) { return std::stoi(s); }
inline float toFloat(const std::string& s) { try { return std::stof(s); } catch (...) { return 0.0f; } }
inline char toChar(int v) { return static_cast<char>(v); }
inline std::string trim(const std::string& s) {
size_t a=s.find_first_not_of(" \t\n\r"), b=s.find_last_not_of(" \t\n\r");
return a==std::string::npos ? "" : s.substr(a, b-a+1);
}
inline std::vector<std::string> split(const std::string& s, char d) {
std::vector<std::string> o; std::stringstream ss(s); std::string t;
while (std::getline(ss, t, d)) o.push_back(t);
return o;
}
inline std::vector<std::string> splitTokens(const std::string& s, const std::string& delims) {
std::vector<std::string> o; std::string cur;
for (char c:s) {
if (delims.find(c)!=std::string::npos) { if(!cur.empty()){o.push_back(cur);cur.clear();} }
else cur+=c;
}
if (!cur.empty()) o.push_back(cur);
return o;
}
inline std::string join(const std::vector<std::string>& v, const std::string& sep) {
std::string o;
for (size_t i=0; i<v.size(); i++) { if(i) o+=sep; o+=v[i]; }
return o;
}
// Number formatting
inline std::string nf(float v, int digits) { std::ostringstream ss; ss.precision(digits); ss<<std::fixed<<v; return ss.str(); }
inline std::string nf(int v, int minDigits) { std::ostringstream ss; ss<<std::setw(minDigits)<<std::setfill('0')<<v; return ss.str(); }
inline std::string nf(float v, int left, int right) {
std::ostringstream ss; ss<<std::fixed<<std::setprecision(right)<<v;
std::string s=ss.str(); size_t dot=s.find('.');
size_t intLen=(dot==std::string::npos)?s.size():dot;
while((int)intLen<left){s="0"+s;intLen++;}
return s;
}
inline std::string nfc(float v, int digits) { std::ostringstream ss; ss.precision(digits); ss<<std::fixed<<v; std::string s=ss.str(); int dot=(int)s.find('.'); if(dot<0)dot=(int)s.size(); for(int i=dot-3;i>0;i-=3)s.insert(i,","); return s; }
inline std::string nfp(float v, int digits) { return (v>=0?"+":"") + nf(v,digits); }
inline std::string nfs(float v, int digits) { return (v>=0?" ":"") + nf(v,digits); }
inline std::string hex(int v) { std::ostringstream ss; ss<<std::uppercase<<std::hex<<v; return ss.str(); }
inline std::string hex(int v, int digits) { std::ostringstream ss; ss<<std::uppercase<<std::hex<<std::setw(digits)<<std::setfill('0')<<v; return ss.str(); }
inline std::string binary(int v) { std::string s; for(int i=31;i>=0;i--) s+=((v>>i)&1)?'1':'0'; return s; }
inline int unhex(const std::string& s) { return std::stoi(s,nullptr,16); }
inline int unbinary(const std::string& s){ return std::stoi(s,nullptr,2); }
// Regex helpers
inline std::vector<std::string> match(const std::string& s, const std::string& pat) {
std::vector<std::string> out; std::smatch m; std::regex re(pat);
if (std::regex_search(s,m,re)) for (auto& x:m) out.push_back(x.str());
return out;
}
inline std::vector<std::vector<std::string>> matchAll(const std::string& s, const std::string& pat) {
std::vector<std::vector<std::string>> out; std::regex re(pat);
auto it=std::sregex_iterator(s.begin(),s.end(),re), end=std::sregex_iterator();
for(;it!=end;++it){ std::vector<std::string> row; for(auto& x:*it) row.push_back(x.str()); out.push_back(row); }
return out;
}
// =============================================================================
// FILE I/O
// =============================================================================
inline std::vector<std::string> loadStrings(const std::string& path) {
std::vector<std::string> lines; std::ifstream f(path); std::string l;
while (std::getline(f,l)) lines.push_back(l);
return lines;
}
inline bool saveStrings(const std::string& path, const std::vector<std::string>& lines) {
std::ofstream f(path); if (!f) return false;
for (auto& l:lines) f<<l<<"\n";
return true;
}
inline std::vector<unsigned char> loadBytes(const std::string& path) {
std::ifstream f(path,std::ios::binary);
return std::vector<unsigned char>((std::istreambuf_iterator<char>(f)),std::istreambuf_iterator<char>());
}
inline bool saveBytes(const std::string& path, const std::vector<unsigned char>& data) {
std::ofstream f(path,std::ios::binary); if (!f) return false;
f.write(reinterpret_cast<const char*>(data.data()),data.size());
return true;
}
// =============================================================================
// USER CALLBACKS -- the sketch must define at minimum setup() and draw()