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Remove unused option, clean up or and clarify some comments.

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The secondaryPassSingular option doesn't seem to make much sense in case
of triple-transitions (6 secondary ones).
This commit is contained in:
asofold 2015-03-09 11:26:53 +01:00
parent e871d205f6
commit 2e4a47f3c1
1 changed files with 21 additions and 49 deletions
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70
NCPCore/src/main/java/fr/neatmonster/nocheatplus/utilities/RayTracing.java
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@ -18,7 +18,7 @@ public abstract class RayTracing {
/** Distance per axis. */
protected double dX, dY, dZ;
/** Current block. */
/** Current block, step always has been or is called with these. */
protected int blockX, blockY, blockZ;
/** End block. */
@ -44,9 +44,6 @@ public abstract class RayTracing {
/** If to call stepSecondary at all (secondary transitions).*/
protected boolean secondaryStep = true;
/** If to pass secondary transitions if ANY sub-call succeeds. */
protected boolean secondaryPassSingular = false;
/** Maximum steps that will be done. */
private int maxSteps = Integer.MAX_VALUE;
@ -134,10 +131,13 @@ public abstract class RayTracing {
boolean transX, transY, transZ;
// Actual loop.
// TODO: Fix last transition not taken sometimes (with "off by x-th digit" or "t=0 transition").
/*
* TODO: Fix last transition not taken sometimes (with
* "off by x-th digit" or "t=0 transition"). Consider correcting t on
* base of the block coordinates in use.
*/
while (1.0 - t > tol) {
// Determine smallest time to block edge, per axis.
// TODO: if all coords are in the end block: ensure the full distance is taken towards the end coordinate.
tX = tDiff(dX, oX, blockX == endBlockX);
tY = tDiff(dY, oY, blockY == endBlockY);
tZ = tDiff(dZ, oZ, blockZ == endBlockZ);
@ -155,6 +155,7 @@ public abstract class RayTracing {
}
if (t + tMin > 1.0) {
// Set to the remaining distance (does trigger).
// TODO: Inaccurate t can mean iterating too short.
tMin = 1.0 - t;
}
@ -261,7 +262,7 @@ public abstract class RayTracing {
}
/**
*
* Handle all secondary transitions (incomplete transitions).
* @param transitions
* @param transX
* @param transY
@ -272,49 +273,34 @@ public abstract class RayTracing {
protected boolean handleSecondaryTransitions(final int transitions, final boolean transX, final boolean transY, final boolean transZ, final double tMin) {
// Handle one transition.
if (transX) {
if (step(blockX + (dX > 0 ? 1 : -1), blockY, blockZ, dX > 0 ? 0.0 : 1.0, oY, oZ, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX + (dX > 0 ? 1 : -1), blockY, blockZ, dX > 0 ? 0.0 : 1.0, oY, oZ, 0.0, false)) {
return false;
}
}
if (transY) {
if (step(blockX, blockY + (dY > 0 ? 1 : -1), blockZ, oX, dY > 0 ? 0.0 : 1.0, oZ, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX, blockY + (dY > 0 ? 1 : -1), blockZ, oX, dY > 0 ? 0.0 : 1.0, oZ, 0.0, false)) {
return false;
}
}
if (transZ) {
if (step(blockX, blockY, blockZ + (dZ > 0 ? 1 : -1), oX, oY, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX, blockY, blockZ + (dZ > 0 ? 1 : -1), oX, oY, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
return false;
}
}
// Handle two transitions.
// Handle double-transitions.
if (transitions == 3) {
if (!handleSecondaryDoubleTransitions(transitions, transX, transY, transZ, tMin)) {
return false;
}
}
// If secondaryPassSingular is true, all returned false, otherwise none returned false.
return !secondaryPassSingular;
// All passed.
return true;
}
/**
*
* Handle secondary transitions with 2 axes at once (incomplete transitions).
* @param transitions
* @param transX
* @param transY
@ -325,34 +311,19 @@ public abstract class RayTracing {
protected boolean handleSecondaryDoubleTransitions(final int transitions, final boolean transX, final boolean transY, final boolean transZ, final double tMin) {
// Two transitions at once, thus step directly.
// X and Y.
if (step(blockX + (dX > 0 ? 1 : -1), blockY + (dY > 0 ? 1 : -1), blockZ, dX > 0 ? 0.0 : 1.0, dY > 0 ? 0.0 : 1.0, oZ, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX + (dX > 0 ? 1 : -1), blockY + (dY > 0 ? 1 : -1), blockZ, dX > 0 ? 0.0 : 1.0, dY > 0 ? 0.0 : 1.0, oZ, 0.0, false)) {
return false;
}
// X and Z.
if (step(blockX + (dX > 0 ? 1 : -1), blockY, blockZ + (dZ > 0 ? 1 : -1), dX > 0 ? 0.0 : 1.0, oY, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX + (dX > 0 ? 1 : -1), blockY, blockZ + (dZ > 0 ? 1 : -1), dX > 0 ? 0.0 : 1.0, oY, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
return false;
}
// Y and Z.
if (step(blockX, blockY + (dY > 0 ? 1 : -1), blockZ + (dZ > 0 ? 1 : -1), oX, dY > 0 ? 0.0 : 1.0, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
if (secondaryPassSingular) {
return true;
}
}
else if (!secondaryPassSingular) {
if (!step(blockX, blockY + (dY > 0 ? 1 : -1), blockZ + (dZ > 0 ? 1 : -1), oX, dY > 0 ? 0.0 : 1.0, dZ > 0 ? 0.0 : 1.0, 0.0, false)) {
return false;
}
// If secondaryPassSingular is true, all returned false, otherwise none returned false.
return !secondaryPassSingular;
// All passed.
return true;
}
/**
@ -364,6 +335,7 @@ public abstract class RayTracing {
}
/**
* Test if the primary line reached the end block.<br>
* (Might later get changed to protected visibility.)
* @return
*/