lfsdash/text.c

#include <GL/glfw.h>
#include <FTGL/ftgl.h>
#include "text.h"

void drawText(const char *text, FTGLfont *font, float x, float y, float xs, float ys, int xa, int ya)
{
    float bounds[6];
	ftglGetFontBBox(font, text, -1, bounds);
	int cx = bounds[3] - bounds[0];
	int cy = bounds[4] - bounds[1];

	float ox = 0, oy = 0;
	switch (xa)
	{
	    case TA_LEFT:   ox = 0; break;
	    case TA_RIGHT:  ox = -1; break;
	    case TA_CENTRE: ox = -0.5; break;
	}
	switch (ya)
	{
	    case TA_TOP:    oy = -1; break;
	    case TA_BOTTOM: oy = 0; break;
	    case TA_CENTRE: oy = -0.5; break;
	}

	glPushMatrix();
	glTranslatef(x, y, 0.0f);
	glScalef(xs / TEXT_SIZE, ys / TEXT_SIZE, 1.0f);
	glTranslatef(cx * ox, cy * oy, 0.0f);
	ftglRenderFont(font, text, FTGL_RENDER_ALL);
	glPopMatrix();
}