Add Tree and Update for gtk119

Gtkmm3/gtk119_imageviewer2/src/MyImage.cc

@@ -30,4 +30,7 @@ bool MyImage::on_draw(const Cairo::RefPtr<Cairo::Context> &cr){
 void MyImage::set_pixbuf(const Glib::RefPtr<Gdk::Pixbuf> &pixbuf)
 {
     image = pixbuf;
+
+    //ReDraw the draw area
+    queue_draw();
 }

Gtkmm3/gtk119_imageviewer2/src/MyWin.cc

@@ -30,9 +30,23 @@ btnopen("Open Image")
 }
 
 void MyWin::btnopen_clicked(){
+    //Create a file open dialog
+    dialog = Gtk::FileChooserNative::create("Open a image File",*this,Gtk::FILE_CHOOSER_ACTION_OPEN,
+                                            "OK","Cancel");
+    
+    dialog->signal_response().connect(sigc::mem_fun(*this,&MyWin::dialog_response));
 
+    dialog->show();
 }
 
 void MyWin::dialog_response(int response_id){
+    if(response_id == Gtk::RESPONSE_ACCEPT){
+        //Show the image in a drawing area
+        auto filename = dialog->get_filename();
+        auto pixbuf = Gdk::Pixbuf::create_from_file(filename);
+        image_area.set_pixbuf(pixbuf);
+        pixbuf.reset();
+    }
 
+    dialog.reset();
 } 

c/Christmas_tree.c

@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <windows.h>
+
+void SetColor(int Mode){
+    //Get Color
+    int color = rand()%16;
+    if(color == 0 ) color = 0x04;
+
+    //Set Color for Console
+    HANDLE  hCon = GetStdHandle(STD_OUTPUT_HANDLE);
+
+    if(Mode == 0){
+        SetConsoleTextAttribute(hCon,FOREGROUND_GREEN);
+    }else{
+        SetConsoleTextAttribute(hCon,color);
+    }
+}
+
+#define PI 3.14159265359
+
+float sx,sy;
+
+float sdCircle(float px,float py,float r){
+    float dx = px - sx, dy = py-sy;
+    return sqrtf(dx * dx + dy * dy) - r;
+}
+
+float opUnion(float d1,float d2){
+    return d1 < d2 ? d1 : d2;
+}
+
+#define T px + scale * r * cosf(theta), py + scale * r * sin(theta)
+
+float f(float px, float py, float theta, float scale, int n){
+    float d = 0.0f;
+    for(float r = 0.0f; r < 0.8f; r += 0.02f){
+        d = opUnion(d,sdCircle(T, 0.05f * scale * (0.95f - r)));
+    }
+
+    if(n > 0){
+        for(int t = -1; t <=1; t+=2){
+            float tt = theta + t * 1.8f;
+            float ss = scale * 0.9f;
+            for(float r = 0.2f; r < 0.8f; r += 0.1f){
+                d = opUnion(d, f(T, tt, ss*0.5f, n-1));
+                ss *= 0.8f;
+            }
+        }
+    }
+}
+
+int main(int argc, char * argv[]){
+    srand((unsigned)time(NULL));
+    int n = argc > 1 ? atoi(argv[1]) : 3;
+
+    int SetCnt = 0;
+    int CntTotal = 0;
+    float fReverseCnt = 0;
+    int ColorIndex = 0;
+    
+    for(sy = 0.8f; sy > 0.0f; sy -= 0.02f, putchar('\n') ){
+        ColorIndex++;
+
+        SetCnt = 0;
+
+        for(sx = -0.35f; sx < 0.35f; sx += 0.01f){
+            if(f(0, 0, PI * 0.5f, 1.0f, n) < 0){
+                if(ColorIndex%5 == 0 ){
+                    SetColor(1);
+                }else{
+                    if(SetCnt < 3){
+                        SetCnt++;
+                        SetColor(1);
+
+                        fReverseCnt = sx + 0.01f;
+                    }else if(sx >= fabs(fReverseCnt)){
+                        SetColor(1);
+                    }else{
+                        SetColor(0);
+                    }
+                }
+                putchar(' ');
+            }else{
+                putchar(' ');
+            }
+        }
+    }
+
+    return 0;
+}