From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 6 Sep 2011 20:58:13 +0000 (+0300)
Subject: Update viewer for compatibility with library changes
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=c83a3894a5b52499916507e77c0b79436ebad848

Update viewer for compatibility with library changes
---

diff --git a/viewer.cpp b/viewer.cpp
index e6826bf0..bc024e1f 100644
--- a/viewer.cpp
+++ b/viewer.cpp
@@ -1,5 +1,6 @@
 #include <cmath>
 #include <msp/core/application.h>
+#include <msp/core/getopt.h>
 #include <msp/fs/utils.h>
 #include <msp/graphics/simplewindow.h>
 #include <msp/gl/blend.h>
@@ -10,15 +11,17 @@
 #include <msp/gl/mesh.h>
 #include <msp/gl/object.h>
 #include <msp/gl/tests.h>
+#include <msp/input/mouse.h>
 #include <msp/io/print.h>
 
 using namespace std;
 using namespace Msp;
 
-class Viewer: public Application
+class Viewer: public RegisteredApplication<Viewer>
 {
 private:
 	Graphics::SimpleGLWindow window;
+	Input::Mouse mouse;
 	GL::Object *object;
 	GL::Mesh *mesh;
 	GL::Light light;
@@ -30,10 +33,6 @@ private:
 	float light_yaw;
 	float light_pitch;
 	unsigned dragging;
-	int pointer_x;
-	int pointer_y;
-
-	static Application::RegApp<Viewer> reg;
 
 public:
 	Viewer(int, char **);
@@ -43,23 +42,18 @@ public:
 private:
 	virtual void tick();
 
-	void button_press(int, int, unsigned, unsigned);
-	void button_release(int, int, unsigned, unsigned);
-	void pointer_motion(int, int);
-	void key_press(unsigned, unsigned, wchar_t);
+	void button_press(unsigned);
+	void button_release(unsigned);
+	void axis_motion(unsigned, float, float);
 
 	void update_camera();
 	void update_light();
-
-public:
-	static void usage(const char *, const char *, bool);
 };
 
 
-Application::RegApp<Viewer> Viewer::reg;
-
 Viewer::Viewer(int argc, char **argv):
 	window(1024, 768, false),
+	mouse(window),
 	object(0),
 	mesh(0),
 	yaw(0),
@@ -67,12 +61,10 @@ Viewer::Viewer(int argc, char **argv):
 	distance(10),
 	light_yaw(0),
 	light_pitch(0),
-	dragging(0),
-	pointer_x(0),
-	pointer_y(0)
+	dragging(0)
 {
 	if(argc<2)
-		throw UsageError("Filename must be provided");
+		throw usage_error("Filename must be provided");
 
 	string fn = argv[1];
 	string ext = FS::extpart(fn);
@@ -88,13 +80,12 @@ Viewer::Viewer(int argc, char **argv):
 		DataFile::load(*object, fn);
 	}
 	else
-		throw UsageError("Don't know how to view this file");
+		throw usage_error("Don't know how to view this file");
 
 	window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Viewer::exit), 0));
-	window.signal_button_press.connect(sigc::mem_fun(this, &Viewer::button_press));
-	window.signal_button_release.connect(sigc::mem_fun(this, &Viewer::button_release));
-	window.signal_pointer_motion.connect(sigc::mem_fun(this, &Viewer::pointer_motion));
-	window.signal_key_press.connect(sigc::mem_fun(this, &Viewer::key_press));
+	mouse.signal_button_press.connect(sigc::mem_fun(this, &Viewer::button_press));
+	mouse.signal_button_release.connect(sigc::mem_fun(this, &Viewer::button_release));
+	mouse.signal_axis_motion.connect(sigc::mem_fun(this, &Viewer::axis_motion));
 
 	light.set_position(GL::Vector4(0, 0, 1, 0));
 	lighting.attach(0, light);
@@ -134,25 +125,16 @@ void Viewer::tick()
 	window.swap_buffers();
 }
 
-void Viewer::usage(const char *err, const char *argv0, bool)
-{
-	if(err)
-		IO::print("%s\n", err);
-	IO::print("Usage: %s <filename>\n", argv0);
-}
-
-void Viewer::button_press(int x, int y, unsigned btn, unsigned)
+void Viewer::button_press(unsigned btn)
 {
 	if(btn==1)
 	{
 		dragging = 1;
-		pointer_x = x;
-		pointer_y = y;
 	}
 	else if(btn==3)
 	{
 		dragging = 3;
-		pointer_motion(x, y);
+		axis_motion(0, 0, 0);
 	}
 	else if(btn==4)
 	{
@@ -166,52 +148,45 @@ void Viewer::button_press(int x, int y, unsigned btn, unsigned)
 	}
 }
 
-void Viewer::button_release(int, int, unsigned btn, unsigned)
+void Viewer::button_release(unsigned btn)
 {
 	if(btn==dragging)
 		dragging = 0;
 }
 
-void Viewer::pointer_motion(int x, int y)
+void Viewer::axis_motion(unsigned axis, float, float delta)
 {
 	if(dragging==1)
 	{
-		int dx = x-pointer_x;
-		int dy = pointer_y-y;
+		float dx = (axis==0 ? delta : 0);
+		float dy = (axis==1 ? delta : 0);
 
-		yaw -= dx*M_PI*2/window.get_width();
+		yaw -= dx*M_PI*2;
 		while(yaw>M_PI)
 			yaw -= M_PI*2;
 		while(yaw<-M_PI)
 			yaw += M_PI*2;
 
-		pitch += dy*M_PI/window.get_height();
+		pitch += dy*M_PI;
 		if(pitch>M_PI*0.49)
 			pitch = M_PI*0.49;
 		if(pitch<-M_PI*0.49)
 			pitch = -M_PI*0.49;
 
 		update_camera();
-
-		pointer_x = x;
-		pointer_y = y;
 	}
 	else if(dragging==3)
 	{
-		int dx = x-window.get_width()/2;
-		int dy = window.get_height()/2-y;
+		float x = mouse.get_axis_value(0);
+		float y = mouse.get_axis_value(1);
 
-		light_yaw = yaw+dx*M_PI/window.get_width();
-		light_pitch = pitch-dy*M_PI/window.get_height();
+		light_yaw = yaw+x*M_PI;
+		light_pitch = pitch-y*M_PI;
 
 		update_light();
 	}
 }
 
-void Viewer::key_press(unsigned, unsigned, wchar_t)
-{
-}
-
 void Viewer::update_camera()
 {
 	float cy = cos(yaw);