Java Code Examples for com.jme3.math.FastMath#floor()
The following examples show how to use
com.jme3.math.FastMath#floor() .
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Example 1
| Source File: TerrainQuad.java From jmonkeyengine with BSD 3-Clause "New" or "Revised" License | 6 votes |
|
protected Vector3f getNormal(float x, float z, Vector2f xz) {
x-=0.5f;
z-=0.5f;
float col = FastMath.floor(x);
float row = FastMath.floor(z);
boolean onX = false;
if(1 - (x - col)-(z - row) < 0) // what triangle to interpolate on
onX = true;
// v1--v2 ^
// | / | |
// | / | |
// v3--v4 | Z
// |
// <-------Y
// X
Vector3f n1 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.ceil(z));
Vector3f n2 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.ceil(z));
Vector3f n3 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.floor(z));
Vector3f n4 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.floor(z));
return n1.add(n2).add(n3).add(n4).normalize();
}
Example 2
| Source File: TerrainQuad.java From MikuMikuStudio with BSD 2-Clause "Simplified" License | 6 votes |
|
protected Vector3f getNormal(float x, float z, Vector2f xz) {
x-=0.5f;
z-=0.5f;
float col = FastMath.floor(x);
float row = FastMath.floor(z);
boolean onX = false;
if(1 - (x - col)-(z - row) < 0) // what triangle to interpolate on
onX = true;
// v1--v2 ^
// | / | |
// | / | |
// v3--v4 | Z
// |
// <-------Y
// X
Vector3f n1 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.ceil(z));
Vector3f n2 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.ceil(z));
Vector3f n3 = getMeshNormal((int) FastMath.ceil(x), (int) FastMath.floor(z));
Vector3f n4 = getMeshNormal((int) FastMath.floor(x), (int) FastMath.floor(z));
return n1.add(n2).add(n3).add(n4).normalize();
}
Example 3
| Source File: FaultHeightMap.java From jmonkeyengine with BSD 3-Clause "New" or "Revised" License | 5 votes |
|
protected void addCircleFault(float[][] tempBuffer, Random random, float faultHeight, float range) {
float radius = random.nextFloat() * (maxRadius - minRadius) + minRadius;
int intRadius = (int) FastMath.floor(radius);
// Allox circle center to be out of map if not by more than radius.
// Unlucky cases will put them in the far corner, with the circle
// entirely outside heightmap
int x = random.nextInt(size + 2 * intRadius) - intRadius;
int y = random.nextInt(size + 2 * intRadius) - intRadius;
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
float dist;
if (i != x || j != y) {
int dx = i - x;
int dy = j - y;
float dmag = FastMath.sqrt(FastMath.sqr(dx) + FastMath.sqr(dy));
float rx = x + dx / dmag * radius;
float ry = y + dy / dmag * radius;
dist = FastMath.sign(dmag - radius)
* FastMath.sqrt(FastMath.sqr(i - rx) + FastMath.sqr(j - ry));
} else {
dist = 0;
}
tempBuffer[i][j] += calcHeight(dist, random, faultHeight, range);
}
}
}
Example 4
| Source File: FaultHeightMap.java From MikuMikuStudio with BSD 2-Clause "Simplified" License | 5 votes |
|
protected void addCircleFault(float[][] tempBuffer, Random random, float faultHeight, float range) {
float radius = random.nextFloat() * (maxRadius - minRadius) + minRadius;
int intRadius = (int) FastMath.floor(radius);
// Allox circle center to be out of map if not by more than radius.
// Unlucky cases will put them in the far corner, with the circle
// entirely outside heightmap
int x = random.nextInt(size + 2 * intRadius) - intRadius;
int y = random.nextInt(size + 2 * intRadius) - intRadius;
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
float dist;
if (i != x || j != y) {
int dx = i - x;
int dy = j - y;
float dmag = FastMath.sqrt(FastMath.sqr(dx) + FastMath.sqr(dy));
float rx = x + dx / dmag * radius;
float ry = y + dy / dmag * radius;
dist = FastMath.sign(dmag - radius)
* FastMath.sqrt(FastMath.sqr(i - rx) + FastMath.sqr(j - ry));
} else {
dist = 0;
}
tempBuffer[i][j] += calcHeight(dist, random, faultHeight, range);
}
}
}
Example 5
| Source File: NoiseGenerator.java From MikuMikuStudio with BSD 2-Clause "Simplified" License | 4 votes |
|
/**
* Not 'pure' Worley, but the results are virtually the same. Returns distances in da and point coords in pa
*/
public static void voronoi(float x, float y, float z, float[] da, float[] pa, float distanceExponent, int distanceType) {
float xd, yd, zd, d, p[] = new float[3];
DistanceFunction distanceFunc = distanceFunctions.get(Integer.valueOf(distanceType));
if (distanceFunc == null) {
distanceFunc = distanceFunctions.get(Integer.valueOf(0));
}
int xi = (int) FastMath.floor(x);
int yi = (int) FastMath.floor(y);
int zi = (int) FastMath.floor(z);
da[0] = da[1] = da[2] = da[3] = Float.MAX_VALUE;// 1e10f;
for (int i = xi - 1; i <= xi + 1; ++i) {
for (int j = yi - 1; j <= yi + 1; ++j) {
for (int k = zi - 1; k <= zi + 1; ++k) {
NoiseMath.hash(i, j, k, p);
xd = x - (p[0] + i);
yd = y - (p[1] + j);
zd = z - (p[2] + k);
d = distanceFunc.execute(xd, yd, zd, distanceExponent);
if (d < da[0]) {
da[3] = da[2];
da[2] = da[1];
da[1] = da[0];
da[0] = d;
pa[9] = pa[6];
pa[10] = pa[7];
pa[11] = pa[8];
pa[6] = pa[3];
pa[7] = pa[4];
pa[8] = pa[5];
pa[3] = pa[0];
pa[4] = pa[1];
pa[5] = pa[2];
pa[0] = p[0] + i;
pa[1] = p[1] + j;
pa[2] = p[2] + k;
} else if (d < da[1]) {
da[3] = da[2];
da[2] = da[1];
da[1] = d;
pa[9] = pa[6];
pa[10] = pa[7];
pa[11] = pa[8];
pa[6] = pa[3];
pa[7] = pa[4];
pa[8] = pa[5];
pa[3] = p[0] + i;
pa[4] = p[1] + j;
pa[5] = p[2] + k;
} else if (d < da[2]) {
da[3] = da[2];
da[2] = d;
pa[9] = pa[6];
pa[10] = pa[7];
pa[11] = pa[8];
pa[6] = p[0] + i;
pa[7] = p[1] + j;
pa[8] = p[2] + k;
} else if (d < da[3]) {
da[3] = d;
pa[9] = p[0] + i;
pa[10] = p[1] + j;
pa[11] = p[2] + k;
}
}
}
}
}
Example 6
| Source File: TerrainGrid.java From jmonkeyengine with BSD 3-Clause "New" or "Revised" License | 3 votes |
|
/**
* Get the location in cell-coordinates of the specified location.
* Cell coordinates are integer corrdinates, usually with y=0, each
* representing a cell in the world.
* For example, moving right in the +X direction:
* (0,0,0) (1,0,0) (2,0,0), (3,0,0)
* and then down the -Z direction:
* (3,0,-1) (3,0,-2) (3,0,-3)
*/
public Vector3f getCamCell(Vector3f location) {
Vector3f tile = getTileCell(location);
Vector3f offsetHalf = new Vector3f(-0.5f, 0, -0.5f);
Vector3f shifted = tile.subtract(offsetHalf);
return new Vector3f(FastMath.floor(shifted.x), 0, FastMath.floor(shifted.z));
}
Example 7
| Source File: TerrainGrid.java From MikuMikuStudio with BSD 2-Clause "Simplified" License | 3 votes |
|
/**
* Get the location in cell-coordinates of the specified location.
* Cell coordinates are integer corrdinates, usually with y=0, each
* representing a cell in the world.
* For example, moving right in the +X direction:
* (0,0,0) (1,0,0) (2,0,0), (3,0,0)
* and then down the -Z direction:
* (3,0,-1) (3,0,-2) (3,0,-3)
*/
public Vector3f getCamCell(Vector3f location) {
Vector3f tile = getTileCell(location);
Vector3f offsetHalf = new Vector3f(-0.5f, 0, -0.5f);
Vector3f shifted = tile.subtract(offsetHalf);
return new Vector3f(FastMath.floor(shifted.x), 0, FastMath.floor(shifted.z));
}
