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Added support for stretched cylinders and brought their profile in line with that of the central layer of a sphere of the same x/z radius.

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This commit is contained in:
TomyLobo
2011-10-28 20:16:19 +02:00
parent 318e81886c
commit 58be9d9be4
4 changed files with 96 additions and 163 deletions
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213
src/main/java/com/sk89q/worldedit/EditSession.java
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@ -1794,157 +1794,22 @@ public class EditSession {
}
/**
* Helper method to draw the cylinder.
* Makes a sphere or ellipsoid.
*
* @param center
* @param x
* @param z
* @param height
* @param block
* @param pos Center of the sphere or ellipsoid
* @param block The block pattern to use
* @param radiusX The cylinder's largest north/south extent
* @param radiusZ The cylinder's largest east/west extent
* @param height The cylinder's up/down extent. If negative, extend downward.
* @param filled If false, only a shell will be generated.
* @return number of blocks changed
* @throws MaxChangedBlocksException
*/
private int makeHCylinderPoints(Vector center, int x, double z, int height,
Pattern block) throws MaxChangedBlocksException {
int ceilZ = (int) Math.ceil(z);
public int makeCylinder(Vector pos, Pattern block, double radiusX, double radiusZ, int height, boolean filled) throws MaxChangedBlocksException {
int affected = 0;
if (x == 0) {
for (int y = 0; y < height; ++y) {
setBlock(center.add(0, y, ceilZ), block);
setBlock(center.add(0, y, -ceilZ), block);
setBlock(center.add(ceilZ, y, 0), block);
setBlock(center.add(-ceilZ, y, 0), block);
affected += 4;
}
} else if (x == z) {
for (int y = 0; y < height; ++y) {
setBlock(center.add(x, y, ceilZ), block);
setBlock(center.add(-x, y, ceilZ), block);
setBlock(center.add(x, y, -ceilZ), block);
setBlock(center.add(-x, y, -ceilZ), block);
affected += 4;
}
} else if (x < z) {
for (int y = 0; y < height; ++y) {
setBlock(center.add(x, y, ceilZ), block);
setBlock(center.add(-x, y, ceilZ), block);
setBlock(center.add(x, y, -ceilZ), block);
setBlock(center.add(-x, y, -ceilZ), block);
setBlock(center.add(ceilZ, y, x), block);
setBlock(center.add(-ceilZ, y, x), block);
setBlock(center.add(ceilZ, y, -x), block);
setBlock(center.add(-ceilZ, y, -x), block);
affected += 8;
}
}
return affected;
}
/**
* Draw a hollow cylinder.
*
* @param pos
* @param block
* @param radius
* @param height
* @return number of blocks set
* @throws MaxChangedBlocksException
*/
public int makeHollowCylinder(Vector pos, Pattern block, double radius,
int height) throws MaxChangedBlocksException {
int x = 0;
double z = radius;
double d = (5 - radius * 4) / 4;
int affected = 0;
if (height == 0) {
return 0;
} else if (height < 0) {
height = -height;
pos = pos.subtract(0, height, 0);
}
// Only do this check if height is negative --Elizabeth
if (height < 0 && pos.getBlockY() - height - 1 < 0) {
height = pos.getBlockY() + 1;
} else if (pos.getBlockY() + height - 1 > 127) {
height = 127 - pos.getBlockY() + 1;
}
affected += makeHCylinderPoints(pos, x, z, height, block);
while (x < z) {
++x;
if (d >= 0) {
d += 2 * (x - --z) + 1;
} else {
d += 2 * x + 1;
}
affected += makeHCylinderPoints(pos, x, z, height, block);
}
return affected;
}
/**
* Helper method to draw the cylinder.
*
* @param center
* @param x
* @param z
* @param height
* @param block
* @throws MaxChangedBlocksException
*/
private int makeCylinderPoints(Vector center, int x, double z, int height,
Pattern block) throws MaxChangedBlocksException {
int ceilZ = (int) Math.ceil(z);
int affected = 0;
if (x == z) {
for (int y = 0; y < height; ++y) {
for (int z2 = -ceilZ; z2 <= ceilZ; ++z2) {
setBlock(center.add(x, y, z2), block);
setBlock(center.add(-x, y, z2), block);
affected += 2;
}
}
} else if (x < z) {
for (int y = 0; y < height; ++y) {
for (int x2 = -x; x2 <= x; ++x2) {
for (int z2 = -ceilZ; z2 <= ceilZ; ++z2) {
setBlock(center.add(x2, y, z2), block);
++affected;
}
setBlock(center.add(ceilZ, y, x2), block);
setBlock(center.add(-ceilZ, y, x2), block);
affected += 2;
}
}
}
return affected;
}
/**
* Draw a filled cylinder.
*
* @param pos
* @param block
* @param radius
* @param height
* @return number of blocks set
* @throws MaxChangedBlocksException
*/
public int makeCylinder(Vector pos, Pattern block, double radius, int height)
throws MaxChangedBlocksException {
int x = 0;
double z = radius;
double d = (5 - radius * 4) / 4;
int affected = 0;
radiusX += 0.5;
radiusZ += 0.5;
if (height == 0) {
return 0;
@ -1959,18 +1824,52 @@ public class EditSession {
height = 127 - pos.getBlockY() + 1;
}
affected += makeCylinderPoints(pos, x, z, height, block);
final double invRadiusX = 1 / radiusX;
final double invRadiusZ = 1 / radiusZ;
while (x < z) {
++x;
final int ceilRadiusX = (int) Math.ceil(radiusX);
final int ceilRadiusZ = (int) Math.ceil(radiusZ);
if (d >= 0) {
d += 2 * (x - --z) + 1;
} else {
d += 2 * x + 1;
double nextXn = 0;
forX:
for (int x = 0; x <= ceilRadiusX; ++x) {
final double xn = nextXn;
nextXn = (x + 1) * invRadiusX;
double nextZn = 0;
forZ:
for (int z = 0; z <= ceilRadiusZ; ++z) {
final double zn = nextZn;
nextZn = (z + 1) * invRadiusZ;
double distanceSq = lengthSq(xn, zn);
if (distanceSq > 1) {
if (z == 0) {
break forX;
}
break forZ;
}
if (!filled) {
if (lengthSq(nextXn, zn) <= 1 && lengthSq(xn, nextZn) <= 1) {
continue;
}
}
for (int y = 0; y < height; ++y) {
if (setBlock(pos.add(x, y, z), block)) {
++affected;
}
if (setBlock(pos.add(-x, y, z), block)) {
++affected;
}
if (setBlock(pos.add(x, y, -z), block)) {
++affected;
}
if (setBlock(pos.add(-x, y, -z), block)) {
++affected;
}
}
}
affected += makeCylinderPoints(pos, x, z, height, block);
}
return affected;
@ -2071,6 +1970,10 @@ public class EditSession {
return (x * x) + (y * y) + (z * z);
}
private static final double lengthSq(double x, double z) {
return (x * x) + (z * z);
}
/**
* Makes a pyramid.
*