From: Rafał Długołęcki <rafal@dlugolecki.net.pl>
Date: Sun, 12 Jan 2014 00:30:07 +0000 (+0100)
Subject: Created example openGL triangle in window.
X-Git-Url: https://git.dlugolecki.net.pl/?a=commitdiff_plain;h=4332a173c913ba3b3db75c5be52d9aca20b64aac;p=familia.git

Created example openGL triangle in window.
---

diff --git a/src/viewport/drawing_area.c b/src/viewport/drawing_area.c
index 07e9166..374c87c 100644
--- a/src/viewport/drawing_area.c
+++ b/src/viewport/drawing_area.c
@@ -17,10 +17,16 @@ gboolean drawing_area_draw(GtkWidget *widget, cairo_t *cr, gpointer user_data)
 		return FALSE;
 	}
 
-	glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+//	glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
 	glPushMatrix ();
+		glLoadIdentity ();
 		glColor3f (1.0, 1.0, 1.0);
+		glBegin(GL_TRIANGLES);
+			glVertex3f( 0.0f, 1.0f, 0.0f);    // Top
+			glVertex3f(-1.0f,-1.0f, 0.0f);    // Bottom Left
+			glVertex3f( 1.0f,-1.0f, 0.0f);    // Bottom Right
+		glEnd();
 	glPopMatrix ();
 
 	gtk_widget_end_gl (widget, TRUE);
@@ -49,8 +55,8 @@ gboolean drawing_area_configure_event (GtkWidget *widget,
 	GLfloat width = 0;
 	/* Current page height */
 	GLfloat height = 0;
-	/* Current page */
-	struct order_page *page = NULL;
+	/* Aspect ratio */
+	GLfloat aspect = 0;
 
 	gtk_widget_get_allocation (widget, &allocation);
 	w = allocation.width;
@@ -65,7 +71,14 @@ gboolean drawing_area_configure_event (GtkWidget *widget,
 	glMatrixMode (GL_PROJECTION);
 	glLoadIdentity ();
 
-	/* Code was here */
+//	if (w > h) {
+		aspect = w / h;
+//		glFrustum (-aspect, aspect, -1.0, 1.0, 5.0, 60.0);
+//	}
+//	else {
+//		aspect = h / w;
+		glFrustum (-1.0, 1.0, -aspect, aspect, 5.0, 60.0);
+//	}
 
 	glMatrixMode (GL_MODELVIEW);