51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifndef UTIL_NUMERIC_HEADER
-#define UTIL_NUMERIC_HEADER
-
-#include "../irrlichttypes.h"
-#include "../irr_v2d.h"
-#include "../irr_v3d.h"
-#include "../irr_aabb3d.h"
-#include <list>
-#include <map>
-#include <vector>
-#include <algorithm>
-
+#pragma once
+
+#include "basic_macros.h"
+#include "constants.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)
-/*
- * This class permits to cache getFacePosition call results
- * This reduces CPU usage and vector calls
- */
-class FacePositionCache
-{
-public:
- static std::vector<v3s16> getFacePositions(u16 d);
-private:
- static void generateFacePosition(u16 d);
- static std::map<u16, std::vector<v3s16> > m_cache;
-};
-
-class IndentationRaiser
-{
-public:
- IndentationRaiser(u16 *indentation)
- {
- m_indentation = indentation;
- (*m_indentation)++;
- }
- ~IndentationRaiser()
- {
- (*m_indentation)--;
- }
-private:
- u16 *m_indentation;
-};
+// Maximum radius of a block. The magic number is
+// sqrt(3.0) / 2.0 in literal form.
+static constexpr const f32 BLOCK_MAX_RADIUS = 0.866025403784f * MAP_BLOCKSIZE * BS;
inline s16 getContainerPos(s16 p, s16 d)
{
- return (p>=0 ? p : p-d+1) / d;
+ return (p >= 0 ? p : p - d + 1) / d;
}
inline v2s16 getContainerPos(v2s16 p, s16 d)
);
}
-#define rangelim(d, min, max) ((d) < (min) ? (min) : ((d)>(max)?(max):(d)))
-#define myfloor(x) ((x) > 0.0 ? (int)(x) : (int)(x) - 1)
-
-inline v3s16 arealim(v3s16 p, s16 d)
-{
- if(p.X < 0)
- p.X = 0;
- if(p.Y < 0)
- p.Y = 0;
- if(p.Z < 0)
- p.Z = 0;
- if(p.X > d-1)
- p.X = d-1;
- if(p.Y > d-1)
- p.Y = d-1;
- if(p.Z > d-1)
- p.Z = d-1;
- return p;
-}
-
-#define ARRLEN(x) (sizeof(x) / sizeof((x)[0]))
-#define CONTAINS(c, v) (std::find((c).begin(), (c).end(), (v)) != (c).end())
-
-// 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 void sortBoxVerticies(v3s16 &p1, v3s16 &p2) {
if (p1.X > p2.X)
SWAP(s16, p1.X, p2.X);
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]
*
}
+/** 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)
void mysrand(unsigned int seed);
void myrand_bytes(void *out, size_t len);
int myrand_range(int min, int max);
+float myrand_range(float min, float max);
+float myrand_float();
/*
Miscellaneous functions
bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir,
f32 camera_fov, f32 range, f32 *distance_ptr=NULL);
-/*
- Some helper stuff
-*/
-#define MYMIN(a,b) ((a)<(b)?(a):(b))
-#define MYMAX(a,b) ((a)>(b)?(a):(b))
+s16 adjustDist(s16 dist, float zoom_fov);
/*
Returns nearest 32-bit integer for given floating point number.
return (s32)(f < 0.f ? (f - 0.5f) : (f + 0.5f));
}
+inline constexpr f32 sqr(f32 f)
+{
+ return f * f;
+}
+
/*
Returns integer position of node in given floating point position
*/
inline v3s16 floatToInt(v3f p, f32 d)
{
- v3s16 p2(
- (p.X + (p.X>0 ? d/2 : -d/2))/d,
- (p.Y + (p.Y>0 ? d/2 : -d/2))/d,
- (p.Z + (p.Z>0 ? d/2 : -d/2))/d);
- return p2;
+ return v3s16(
+ (p.X + (p.X > 0 ? d / 2 : -d / 2)) / d,
+ (p.Y + (p.Y > 0 ? d / 2 : -d / 2)) / d,
+ (p.Z + (p.Z > 0 ? d / 2 : -d / 2)) / d);
+}
+
+/*
+ Returns integer position of node in given double precision position
+ */
+inline v3s16 doubleToInt(v3d p, double d)
+{
+ return v3s16(
+ (p.X + (p.X > 0 ? d / 2 : -d / 2)) / d,
+ (p.Y + (p.Y > 0 ? d / 2 : -d / 2)) / d,
+ (p.Z + (p.Z > 0 ? d / 2 : -d / 2)) / d);
}
/*
*/
inline v3f intToFloat(v3s16 p, f32 d)
{
- v3f p2(
+ return v3f(
(f32)p.X * d,
(f32)p.Y * d,
(f32)p.Z * d
);
- return p2;
}
// Random helper. Usually d=BS
-inline core::aabbox3d<f32> getNodeBox(v3s16 p, float d)
-{
- return core::aabbox3d<f32>(
- (float)p.X * d - 0.5*d,
- (float)p.Y * d - 0.5*d,
- (float)p.Z * d - 0.5*d,
- (float)p.X * d + 0.5*d,
- (float)p.Y * d + 0.5*d,
- (float)p.Z * d + 0.5*d
+inline aabb3f getNodeBox(v3s16 p, float d)
+{
+ return aabb3f(
+ (float)p.X * d - 0.5f * d,
+ (float)p.Y * d - 0.5f * d,
+ (float)p.Z * d - 0.5f * d,
+ (float)p.X * d + 0.5f * d,
+ (float)p.Y * d + 0.5f * d,
+ (float)p.Z * d + 0.5f * d
);
}
+
class IntervalLimiter
{
public:
- IntervalLimiter():
- m_accumulator(0)
- {
- }
+ IntervalLimiter() = default;
+
/*
dtime: time from last call to this method
wanted_interval: interval wanted
bool step(float dtime, float wanted_interval)
{
m_accumulator += dtime;
- if(m_accumulator < wanted_interval)
+ if (m_accumulator < wanted_interval)
return false;
m_accumulator -= wanted_interval;
return true;
}
-protected:
- float m_accumulator;
+
+private:
+ float m_accumulator = 0.0f;
};
+
/*
Splits a list into "pages". For example, the list [1,2,3,4,5] split
into two pages would be [1,2,3],[4,5]. This function computes the
*/
inline void paging(u32 length, u32 page, u32 pagecount, u32 &minindex, u32 &maxindex)
{
- if(length < 1 || pagecount < 1 || page < 1 || page > pagecount)
- {
+ if (length < 1 || pagecount < 1 || page < 1 || page > pagecount) {
// Special cases or invalid parameters
minindex = maxindex = 0;
- }
- else if(pagecount <= length)
- {
+ } else if(pagecount <= length) {
// Less pages than entries in the list:
// Each page contains at least one entry
minindex = (length * (page-1) + (pagecount-1)) / pagecount;
maxindex = (length * page + (pagecount-1)) / pagecount;
- }
- else
- {
+ } else {
// More pages than entries in the list:
// Make sure the empty pages are at the end
- if(page < length)
- {
+ if (page < length) {
minindex = page-1;
maxindex = page;
- }
- else
- {
+ } else {
minindex = 0;
maxindex = 0;
}
inline float cycle_shift(float value, float by = 0, float max = 1)
{
- if (value + by < 0) return max + by + value;
+ if (value + by < 0) return value + by + max;
if (value + by > max) return value + by - max;
return value + by;
}
inline bool is_power_of_two(u32 n)
{
- return n != 0 && (n & (n-1)) == 0;
+ return n != 0 && (n & (n - 1)) == 0;
}
// Compute next-higher power of 2 efficiently, e.g. for power-of-2 texture sizes.
return orig + 1;
}
-#endif
+// Gradual steps towards the target value in a wrapped (circular) system
+// using the shorter of both ways
+template<typename T>
+inline void wrappedApproachShortest(T ¤t, const T target, const T stepsize,
+ const T maximum)
+{
+ T delta = target - current;
+ if (delta < 0)
+ delta += maximum;
+
+ if (delta > stepsize && maximum - delta > stepsize) {
+ current += (delta < maximum / 2) ? stepsize : -stepsize;
+ if (current >= maximum)
+ current -= maximum;
+ } else {
+ current = target;
+ }
+}
+
+void setPitchYawRollRad(core::matrix4 &m, const v3f &rot);
+
+inline void setPitchYawRoll(core::matrix4 &m, const v3f &rot)
+{
+ setPitchYawRollRad(m, rot * core::DEGTORAD64);
+}
+
+v3f getPitchYawRollRad(const core::matrix4 &m);
+
+inline v3f getPitchYawRoll(const core::matrix4 &m)
+{
+ return getPitchYawRollRad(m) * core::RADTODEG64;
+}
+
+// Muliply the RGB value of a color linearly, and clamp to black/white
+inline irr::video::SColor multiplyColorValue(const irr::video::SColor &color, float mod)
+{
+ return irr::video::SColor(color.getAlpha(),
+ core::clamp<u32>(color.getRed() * mod, 0, 255),
+ core::clamp<u32>(color.getGreen() * mod, 0, 255),
+ core::clamp<u32>(color.getBlue() * mod, 0, 255));
+}
+
+template <typename T> inline T numericAbsolute(T v) { return v < 0 ? T(-v) : v; }
+template <typename T> inline T numericSign(T v) { return T(v < 0 ? -1 : (v == 0 ? 0 : 1)); }
+
+inline v3f vecAbsolute(v3f v)
+{
+ return v3f(
+ numericAbsolute(v.X),
+ numericAbsolute(v.Y),
+ numericAbsolute(v.Z)
+ );
+}
+
+inline v3f vecSign(v3f v)
+{
+ return v3f(
+ numericSign(v.X),
+ numericSign(v.Y),
+ numericSign(v.Z)
+ );
+}
projects / minetest.git / blobdiff