basic text rendering

1 files changed, 43 insertions, 0 deletions

diff --git a/src/render/text.cc b/src/render/text.cc
new file mode 100644
index 0000000..f97aff6
--- /dev/null
+++ b/src/render/text.cc
@@ -0,0 +1,43 @@
+/*
+   render/text.cc
+   This file is part of the Osirion project and is distributed under 
+   the terms of the GNU General Public License version 2 
+*/
+
+#include "render/render.h"
+#include "GL/glut.h"
+
+namespace render {
+
+void draw_text(float x, float y, std::string text) 
+{
+	for (size_t i =0; i < text.size(); i++) {
+		if (text[i] != ' ') {
+			int row = (int) text[i] >> 4;
+			int col = (int) text[i] & 15;
+	
+			float frow = row * 0.0625f;
+			float fcol = col * 0.0625f;
+			
+			gl::begin(gl::Quads);
+			
+			glTexCoord2f(fcol, frow);
+			gl::vertex(x,y,0);
+
+			glTexCoord2f(fcol + 0.0625f, frow);
+			gl::vertex(x+CHARSIZE,y,0);
+
+			glTexCoord2f(fcol +0.0625f, frow + 0.0625f);
+			gl::vertex(x+CHARSIZE,y+CHARSIZE,0);
+
+			glTexCoord2f(fcol, frow+0.0625f);
+			gl::vertex(x,y+CHARSIZE,0);
+
+			gl::end();
+		}
+		x += CHARSIZE;
+	}
+}
+
+}
+