@Override
	protected void drawGeometry() {
		// Kvȋ@\ONɂAeNX`oCh
		if(textures[state] != null) textures[state].bind();
		
		// `
		glBegin(GL_QUADS);
			glTexCoord2d(1.0, 1.0);
			glVertex3d(-sizex/2, -sizey/2, 0);
			glTexCoord2d(0.0, 1.0);
			glVertex3d( sizex/2, -sizey/2, 0);
			glTexCoord2d(0.0, 0.0);
			glVertex3d( sizex/2,  sizey/2, 0);
			glTexCoord2d(1.0, 0.0);
			glVertex3d(-sizex/2,  sizey/2, 0);
		glEnd();
		
		// ONɂ@\OFF
		if(textures[state] != null) textures[state].unbind();
	}