From a4edc9568b48dad69d0d43e5e266eb607199ae78 Mon Sep 17 00:00:00 2001
From: Michael Lemaire <michael@thunderk.net>
Date: Wed, 12 Aug 2015 22:11:26 +0200
Subject: [PATCH] Restored progress display in CLI render

---
 src/interface/commandline/main.cpp | 47 +++++++++++++++++++++++-------
 src/system/Thread.h                | 33 ++++++++++++---------
 2 files changed, 56 insertions(+), 24 deletions(-)

diff --git a/src/interface/commandline/main.cpp b/src/interface/commandline/main.cpp
index 5de8824..7047661 100644
--- a/src/interface/commandline/main.cpp
+++ b/src/interface/commandline/main.cpp
@@ -9,17 +9,48 @@
 #include "Scenery.h"
 #include "RenderConfig.h"
 #include "ColorProfile.h"
+#include "Thread.h"
 
-void startRender(SoftwareCanvasRenderer *renderer, char *outputpath)
+class RenderThread: public Thread
 {
+public:
+    RenderThread(SoftwareCanvasRenderer *renderer, char *outputpath):
+        renderer(renderer), outputpath(outputpath)
+    {
+    }
+
+    virtual void run() override
+    {
+        renderer->render();
+    }
+
+private:
+    SoftwareCanvasRenderer *renderer;
+    char *outputpath;
+};
+
+static void startRender(SoftwareCanvasRenderer *renderer, char *outputpath)
+{
+    RenderThread thread(renderer, outputpath);
+
     printf("\rRendering %s ...                   \n", outputpath);
-    renderer->render();
+    thread.start();
+
+    while (thread.isWorking())
+    {
+        Thread::timeSleepMs(200);
+
+        printf("\rProgress : %0.1f%%                         ", renderer->getProgress() * 100.0);
+        fflush(stdout);
+    }
+    thread.join();
+
     printf("\rSaving %s ...                      \n", outputpath);
     remove(outputpath);
     renderer->saveToDisk(outputpath);
 }
 
-void displayHelp()
+static void displayHelp()
 {
     printf("Usage : paysages-cli [options]\n");
     printf("Options :\n");
@@ -37,17 +68,11 @@ void displayHelp()
     printf(" -cz z  Camera Z step (double)\n");
 }
 
-void _previewUpdate(double progress)
-{
-    printf("\rProgress : %0.1f%%                         ", progress * 100.0);
-    fflush(stdout);
-}
-
 int main(int argc, char** argv)
 {
     SoftwareCanvasRenderer* renderer;
     char* conf_file_path = NULL;
-    RenderConfig conf_render_params(800, 600, 1, 5);
+    RenderConfig conf_render_params(400, 300, 1, 3);
     int conf_first_picture = 0;
     int conf_nb_pictures = 1;
     double conf_daytime_start = 0.4;
@@ -185,7 +210,7 @@ int main(int argc, char** argv)
 
         if (outputcount >= conf_first_picture)
         {
-            sprintf(outputpath, "output/pic%05d.png", outputcount);
+            sprintf(outputpath, "pic%05d.png", outputcount);
             startRender(renderer, outputpath);
         }
 
diff --git a/src/system/Thread.h b/src/system/Thread.h
index 5c49233..3adbdb0 100644
--- a/src/system/Thread.h
+++ b/src/system/Thread.h
@@ -11,37 +11,44 @@ namespace system
 
 typedef void* (*ThreadFunction)(void* data);
 
-/*!
- * \brief System thread
+/**
+ * System thread
  */
 class SYSTEMSHARED_EXPORT Thread: private QThread
 {
 public:
-    /*!
-     * \brief Create a new thread
+    /**
+     * Create a new thread.
      *
      * The thread is not started automatically. A call to method start() needs to be done.
-     * \param function Function to call inside the thread once it is started
+     *
+     * Either the *function* argument should be provided (with the function to call from the
+     * thread), or the *run* method overridden.
      */
     Thread(ThreadFunction function=0);
 
-    /*!
-     * \brief Start the thread
-     * \param data User data to pass to the threaded function
+    /**
+     * Start the thread, with custom data.
      */
     void start(void* data=0);
 
-    /*!
-     * \brief Wait for the thread to end, and collect its result.
-     * \return The value returned by the threaded function.
+    /**
+     * Wait for the thread to end, and collect its result.
+     *
+     * Returns the value returned by the threaded function.
      */
     void* join();
 
+    /**
+     * Return true if the thread is currently running.
+     */
+    inline bool isWorking() const {return not isFinished();}
+
     static inline void timeSleepMs(unsigned long ms){ QThread::msleep(ms); }
 
 protected:
-    /*!
-     * \brief Function to reimplement if no ThreadFunction has been passed to the constructor.
+    /**
+     * Function to reimplement if no ThreadFunction has been passed to the constructor.
      */
     virtual void run();