advtrains_signals_ks/textures

/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#pragma once

#include "basic_macros.h"
#include "irrlichttypes.h"
#include "irr_v2d.h"
#include "irr_v3d.h"
#include "irr_aabb3d.h"
#include "SColor.h"
#include <matrix4.h>

#define rangelim(d, min, max) ((d) < (min) ? (min) : ((d) > (max) ? (max) : (d)))
#define myfloor(x) ((x) < 0.0 ? (int)(x) - 1 : (int)(x))
// The naive swap performs better than the xor version
#define SWAP(t, x, y) do { \
	t temp = x; \
	x = y; \
	y = temp; \
} while (0)


inline s16 getContainerPos(s16 p, s16 d)
{
	return (p >= 0 ? p : p - d + 1) / d;
}

inline v2s16 getContainerPos(v2s16 p, s16 d)
{
	return v2s16(
		getContainerPos(p.X, d),
		getContainerPos(p.Y, d)
	);
}

inline v3s16 getContainerPos(v3s16 p, s16 d)
{
	return v3s16(
		getContainerPos(p.X, d),
		getContainerPos(p.Y, d),
		getContainerPos(p.Z, d)
	);
}

inline v2s16 getContainerPos(v2s16 p, v2s16 d)
{
	return v2s16(
		getContainerPos(p.X, d.X),
		getContainerPos(p.Y, d.Y)
	);
}

inline v3s16 getContainerPos(v3s16 p, v3s16 d)
{
	return v3s16(
		getContainerPos(p.X, d.X),
		getContainerPos(p.Y, d.Y),
		getContainerPos(p.Z, d.Z)
	);
}

inline void getContainerPosWithOffset(s16 p, s16 d, s16 &container, s16 &offset)
{
	container = (p >= 0 ? p : p - d + 1) / d;
	offset = p & (d - 1);
}

inline void getContainerPosWithOffset(const v2s16 &p, s16 d, v2s16 &container, v2s16 &offset)
{
	getContainerPosWithOffset(p.X, d, container.X, offset.X);
	getContainerPosWithOffset(p.Y, d, container.Y, offset.Y);
}

inline void getContainerPosWithOffset(const v3s16 &p, s16 d, v3s16 &container, v3s16 &offset)
{
	getContainerPosWithOffset(p.X, d, container.X, offset.X);
	getContainerPosWithOffset(p.Y, d, container.Y, offset.Y);
	getContainerPosWithOffset(p.Z, d, container.Z, offset.Z);
}


inline bool isInArea(v3s16 p, s16 d)
{
	return (
		p.X >= 0 && p.X < d &&
		p.Y >= 0 && p.Y < d &&
		p.Z >= 0 && p.Z < d
	);
}

inline bool isInArea(v2s16 p, s16 d)
{
	return (
		p.X >= 0 && p.X < d &&
		p.Y >= 0 && p.Y < d
	);
}

inline bool isInArea(v3s16 p, v3s16 d)
{
	return (
		p.X >= 0 && p.X < d.X &&
		p.Y >= 0 && p.Y < d.Y &&
		p.Z >= 0 && p.Z < d.Z
	);
}

inline void sortBoxVerticies(v3s16 &p1, v3s16 &p2) {
	if (p1.X > p2.X)
		SWAP(s16, p1.X, p2.X);
	if (p1.Y > p2.Y)
		SWAP(s16, p1.Y, p2.Y);
	if (p1.Z > p2.Z)
		SWAP(s16, p1.Z, p2.Z);
}

inline v3s16 componentwise_min(const v3s16 &a, const v3s16 &b)
{
	return v3s16(MYMIN(a.X, b.X), MYMIN(a.Y, b.Y), MYMIN(a.Z, b.Z));
}

inline v3s16 componentwise_max(const v3s16 &a, const v3s16 &b)
{
	return v3s16(MYMAX(a.X, b.X), MYMAX(a.Y, b.Y), MYMAX(a.Z, b.Z));
}


/** Returns \p f wrapped to the range [-360, 360]
 *
 *  See test.cpp for example cases.
 *
 *  \note This is also used in cases where degrees wrapped to the range [0, 360]
 *  is innapropriate (e.g. pitch needs negative values)
 *
 *  \internal functionally equivalent -- although precision may vary slightly --
 *  to fmodf((f), 360.0f) however empirical tests indicate that this approach is
 *  faster.
 */
inline float modulo360f(float f)
{
	int sign;
	int whole;
	float fraction;

	if (f < 0) {
		f = -f;
		sign = -1;
	} else {
		sign = 1;
	}

	whole = f;

	fraction = f - whole;
	whole %= 360;

	return sign * (whole + fraction);
}


/** Returns \p f wrapped to the range [0, 360]
  */
inline float wrapDegrees_0_360(float f)
{
	float value = modulo360f(f);
	return value < 0 ? value + 360 : value;
}


/** Returns \p v3f wrapped to the range [0, 360]
  */
inline v3f wrapDegrees_0_360_v3f(v3f v)
{
	v3f value_v3f;
	value_v3f.X = modulo360f(v.X);
	value_v3f.Y = modulo360f(v.Y);
	value_v3f.Z = modulo360f(v.Z);

	// Now that values are wrapped, use to get values for certain ranges
	value_v3f.X = value_v3f.X < 0 ? value_v3f.X + 360 : value_v3f.X;
	value_v3f.Y = value_v3f.Y < 0 ? value_v3f.Y + 360 : value_v3f.Y;
	value_v3f.Z = value_v3f.Z < 0 ? value_v3f.Z + 360 : value_v3f.Z;
	return value_v3f;
}


/** Returns \p f wrapped to the range [-180, 180]
  */
inline float wrapDegrees_180(float f)
{
	float value = modulo360f(f + 180);
Mode	Name	Size
-rw-r--r--	advtrains_signals_ks_aspect_green.png	155	log plain
-rw-r--r--	advtrains_signals_ks_aspect_red.png	155	log plain
-rw-r--r--	advtrains_signals_ks_aspect_white.png	155	log plain
-rw-r--r--	advtrains_signals_ks_aspect_yellow.png	155	log plain
-rw-r--r--	advtrains_signals_ks_head.png	260	log plain
-rw-r--r--	advtrains_signals_ks_hs_inv.png	210	log plain
-rw-r--r--	advtrains_signals_ks_ltm_danger.png	227	log plain
-rw-r--r--	advtrains_signals_ks_ltm_free.png	215	log plain
-rw-r--r--	advtrains_signals_ks_ltm_shunt.png	238	log plain
-rw-r--r--	advtrains_signals_ks_ltm_shuntd.png	239	log plain
-rw-r--r--	advtrains_signals_ks_ltm_slow.png	219	log plain
-rw-r--r--	advtrains_signals_ks_mast.png	224	log plain
-rw-r--r--	advtrains_signals_ks_ra_inv.png	252	log plain
-rw-r--r--	advtrains_signals_ks_sign_12.png	197	log plain
-rw-r--r--	advtrains_signals_ks_sign_16.png	190	log plain
-rw-r--r--	advtrains_signals_ks_sign_8.png	174	log plain
-rw-r--r--	advtrains_signals_ks_sign_e.png	166	log plain
-rw-r--r--	advtrains_signals_ks_sign_hfs.png	193	log plain
-rw-r--r--	advtrains_signals_ks_signpost.png	224	log plain
-rw-r--r--	advtrains_signals_ks_zs_7.png	251	log plain