Method R_SetFrustum

client/src/main/java/jake2/client/render/fast/Main.java:615–630

R_SetFrustum

()

	 * R_SetFrustum
	 */
	void R_SetFrustum() {
		// rotate VPN right by FOV_X/2 degrees
		Math3D.RotatePointAroundVector(frustum[0].normal, vup, vpn, - (90f - r_newrefdef.fov_x / 2f));
		// rotate VPN left by FOV_X/2 degrees
		Math3D.RotatePointAroundVector(frustum[1].normal, vup, vpn, 90f - r_newrefdef.fov_x / 2f);
		// rotate VPN up by FOV_X/2 degrees
		Math3D.RotatePointAroundVector(frustum[2].normal, vright, vpn, 90f - r_newrefdef.fov_y / 2f);
		// rotate VPN down by FOV_X/2 degrees
		Math3D.RotatePointAroundVector(frustum[3].normal, vright, vpn, - (90f - r_newrefdef.fov_y / 2f));

		for (int i = 0; i < 4; i++) {
			frustum[i].type = Defines.PLANE_ANYZ;
			frustum[i].dist = Math3D.DotProduct(r_origin, frustum[i].normal);
			frustum[i].signbits = (byte) SignbitsForPlane(frustum[i]);
		}
	}

	// =======================================================================