nuclear@1: #include "vport.h"
nuclear@1: #include "opengl.h"
nuclear@1: 
nuclear@1: static void draw_grid(int num_lines, float sep);
nuclear@1: 
nuclear@1: bool init_vport()
nuclear@1: {
nuclear@1: 	return true;
nuclear@1: }
nuclear@1: 
nuclear@1: void destroy_vport()
nuclear@1: {
nuclear@1: }
nuclear@1: 
nuclear@1: void draw_vport()
nuclear@1: {
nuclear@1: 	draw_grid(10, 2.5);
nuclear@1: }
nuclear@1: 
nuclear@1: static void draw_grid(int num_lines, float sep)
nuclear@1: {
nuclear@1: 	float size = num_lines * sep;
nuclear@1: 
nuclear@1: 	glLineWidth(1);
nuclear@1: 
nuclear@1: 	glBegin(GL_LINES);
nuclear@1: 	glColor3f(0.3, 0.3, 0.3);
nuclear@1: 	for(int i=1; i<=num_lines; i++) {
nuclear@1: 		glVertex3f(-i * sep, 0, -size);
nuclear@1: 		glVertex3f(-i * sep, 0, size);
nuclear@1: 		glVertex3f(i * sep, 0, -size);
nuclear@1: 		glVertex3f(i * sep, 0, size);
nuclear@1: 		glVertex3f(-size, 0, -i * sep);
nuclear@1: 		glVertex3f(size, 0, -i * sep);
nuclear@1: 		glVertex3f(-size, 0, i * sep);
nuclear@1: 		glVertex3f(size, 0, i * sep);
nuclear@1: 	}
nuclear@1: 	glEnd();
nuclear@1: 
nuclear@1: 	glLineWidth(2);
nuclear@1: 	glBegin(GL_LINES);
nuclear@1: 	glColor3f(1, 0.3, 0.3);
nuclear@1: 	glVertex3f(-size, 0, 0);
nuclear@1: 	glVertex3f(size, 0, 0);
nuclear@1: 	glColor3f(0.3, 1, 0.3);
nuclear@1: 	glVertex3f(0, 0, -size);
nuclear@1: 	glVertex3f(0, 0, size);
nuclear@1: 	glEnd();
nuclear@1: }