* Pour compiler
* =============
*
- * 1. Créer le fichier hello.pro :
- * +------------------------------------------------------------+
- * |TARGET = hello |
- * |CONFIG += qt debug |
- * |SOURCES += hello.cc |
- * +------------------------------------------------------------+
+ * 1. Créer le fichier hello.pro :
+ * ,----
+ * |TARGET = hello
+ * |CONFIG += qt debug
+ * |SOURCES += hello.cpp
+ * `-----
*
- * 2. Créer le fichier Makefile avec la commande :
+ * 2. Créer le fichier Makefile avec la commande :
* $ qmake -makefile hello.pro
* ou tout simplement :
* $ qmake -makefile
#include <QApplication>
-
-#include <DrawingArea.h>
-#include <DrawingThread.h>
#include <DrawingWindow.h>
#include <iostream>
-int main_drawing_thread(DrawingArea &a)
+void flip(DrawingWindow &w)
{
- std::cout << "[ " << a.width() << " x " << a.height() << " ]\n";
+ std::cout << "[ " << w.width << " x " << w.height << " ]\n";
int c = 0;
int y = 0;
+ int count = 50;//1 << 31;
while (1) {
- std::cerr << "loooooooooooooooooooooop "
- << y << " (" << c << ")\n";
- a.setColor(c, c, c);
- for (int yy = y; yy < y + 10; yy++)
- for (int x = 0; x < a.width(); x++)
- a.drawPoint(x, yy);
- if ((y += 10) >= a.height()) {
+ w.setColor(c, c, c);
+ for (int yy = y; yy < y + 10; yy++) {
+ for (int x = 0; x < w.width; x++)
+ w.drawPoint(x, yy);
+ }
+ if ((y += 10) >= w.height) {
+ w.sync();
y = 0;
c = !c;
+ if (!--count) break;
+ }
+ }
+}
+
+void mandel(DrawingWindow &w)
+{
+ /* paramètres par défaut */
+ int larg = w.width;
+ int haut = w.height;
+ float Rmin = -2.05;
+ float Rmax = 0.55;
+ float Imin = -1.3;
+ float Imax = 1.3;
+
+ int maxiter = 100;
+
+ int x, y; /* le pixel considéré */
+ float cr, ci; /* le complexe correspondant */
+ float zr, zi; /* pour calculer la suite */
+ float zr2, zi2;
+ float pr, pi; /* taille d'un pixel */
+ float rouge, vert, bleu;
+ int i;
+
+ pr = (Rmax - Rmin) / larg;
+ pi = (Imax - Imin) / haut;
+
+ cr = Rmin;
+ for (x = 0; x < larg; x++) {
+ ci = Imin;
+ for (y = 0; y < haut; y++) {
+ /* z_1 = c */
+ zr = cr;
+ zi = ci;
+ for (i = 1; i <= maxiter; i++) {
+ zr2 = zr * zr;
+ zi2 = zi * zi;
+ if (zr2 + zi2 >= 4) {
+ /* |z| >= 2 : on sort de la boucle */
+ break;
+ }
+ /* on calcule le z suivant */
+ zi = 2*zr*zi + ci;
+ zr = zr2 - zi2 + cr;
+ }
+ /* on est sorti trop tôt du for(...):
+ on affiche le pixel d'un couleur en fonction
+ de i */
+ if (i <= maxiter / 2) {
+ /* entre rouge et vert */
+ vert = (2.0 * i) / maxiter;
+ rouge = 1.0 - vert;
+ bleu = 0.0;
+ } else if (i <= maxiter) {
+ /* entre vert et bleu */
+ rouge = 0.0;
+ bleu = (2.0 * i) / maxiter - 1.0;
+ vert = 1.0 - bleu;
+ } else /* (i > maxiter) */
+ rouge = vert = bleu = 0.0;
+ w.setColor(rouge, vert, bleu);
+ w.drawPoint(x, y);
+
+ ci += pi;
}
- sleep(1);
+ cr += pr;
+// if (x % 10 == 0)
+// w.sync();
+ }
+}
+
+void lines(DrawingWindow &w)
+{
+ int n = 100000;
+ int xmax = w.width;
+ int ymax = w.height;
+ while (n-- > 0) {
+ double r = rand() / (float )RAND_MAX;
+ double g = rand() / (float )RAND_MAX;
+ double b = rand() / (float )RAND_MAX;
+ int x1 = rand() % xmax;
+ int y1 = rand() % ymax;
+ int x2 = rand() % xmax;
+ int y2 = rand() % ymax;
+ w.setColor(r, g, b);
+ w.drawLine(x1, y1, x2, y2);
+ //if (n % 100 == 0)
+ w.sync();
+ }
+}
+
+void rectangles(DrawingWindow &w)
+{
+ int d = 5;
+ int z = (w.width > w.height ? w.height : w.width) / 2;
+ z = d * (z / d);
+ while (z > 0) {
+ w.drawRect(z, z, w.width - 1 - z, w.height - 1 - z);
+ z -= d;
}
- return 0;
}
int main(int argc, char *argv[])
{
+ const int w = 700;
+ const int h = 700;
QApplication application(argc, argv);
- DrawingArea drawingArea(800, 600);
- DrawingWindow drawingWindow(drawingArea);
- DrawingThread drawingThread(drawingArea, main_drawing_thread);
- QObject::connect(&drawingArea, SIGNAL(update()),
- &drawingWindow, SLOT(update()));
+ const int nf = 1;
+ const int nm = 1;
+ DrawingWindow *dw[nf + nm];
+
+ for (int i = 0; i < nf; ++i)
+ dw[i] = new DrawingWindow(flip, w, h);
+ for (int i = nf; i < nf + nm; ++i)
+ dw[i] = new DrawingWindow(mandel, w, h);
+
+ for (int i = 0; i < nf + nm; ++i)
+ dw[i]->show();
+
+ DrawingWindow dr(rectangles, w, h);
+ dr.show();
- drawingWindow.show();
- drawingThread.start();
+ DrawingWindow dl(lines, w, h);
+ dl.show();
return application.exec();
}
