Houdini VEX : 立方体を作る

code:c

vector positions[] = {

{-halfSideLength, -halfSideLength, -halfSideLength},

{ halfSideLength, -halfSideLength, -halfSideLength},

{ halfSideLength, -halfSideLength, halfSideLength},

{-halfSideLength, -halfSideLength, halfSideLength},

{-halfSideLength, halfSideLength, -halfSideLength},

{ halfSideLength, halfSideLength, -halfSideLength},

{ halfSideLength, halfSideLength, halfSideLength},

{-halfSideLength, halfSideLength, halfSideLength}

};

int vertexIndices[] = {

0, 1, 2, 3,

4, 5, 6, 7,

0, 1, 5, 4,

1, 2, 6, 5,

2, 3, 7, 6,

3, 0, 4, 7

};

int arrayCount = len(vertexIndices);

int pointIndices[] = {};

foreach (vector position; positions)

{

int pointIndex = addpoint(0, position);

append(pointIndices, pointIndex);

}

int primIndices[] = {};

for (int i = 0; i < arrayCount; i+= 4)

{

int primIndex = addprim(0, "poly", vertexIndexList);

append(primIndices, primIndex);

}

code:c

int points1[];

int points2[];

int points3[];

int points4[];

int points5[];

int points6[];

vector vertices[] = {

{1, -1, 0}, // 0

{-1, -1, 0}, // 1

{-1, 1, 0}, // 2

{1, 1, 0}, // 3

};

foreach(vector v; vertices)

{

append(points1, addpoint(geoself(), set(v.x, v.y, 1)));

append(points2, addpoint(geoself(), set(1, v.x, v.y)));

append(points3, addpoint(geoself(), set(v.y, 1, v.x)));

append(points4, addpoint(geoself(), set(v.y, v.x, -1)));

append(points5, addpoint(geoself(), set(-1, v.y, v.x)));

append(points6, addpoint(geoself(), set(v.x, -1, v.y)));

}

addprim(geoself(), "poly", points1);

addprim(geoself(), "poly", points2);

addprim(geoself(), "poly", points3);

addprim(geoself(), "poly", points4);

addprim(geoself(), "poly", points5);

addprim(geoself(), "poly", points6);

code:c

int points1[]; // z

int points2[]; // z

int points3[]; // y

int points4[]; // y

int points5[]; // x

int points6[]; // x

int p0 = addpoint(geoself(), { 1, 1, -1});

int p1 = addpoint(geoself(), {-1, 1, -1});

int p2 = addpoint(geoself(), {-1, -1, -1});

int p3 = addpoint(geoself(), { 1, -1, -1});

int p4 = addpoint(geoself(), { 1, 1, 1});

int p5 = addpoint(geoself(), {-1, 1, 1});

int p6 = addpoint(geoself(), {-1, -1, 1});

int p7 = addpoint(geoself(), { 1, -1, 1});

function void addPoints(int points[]; int p1; int p2; int p3)

{

append(points, p1);

append(points, p2);

append(points, p3);

}

addPoints(points1, p0, p1, p2);

addPoints(points1, p1, p2, p3);

addprim(geoself(), "poly", points1);

addPoints(points2, p6, p5, p4);

addPoints(points2, p7, p6, p5);

addprim(geoself(), "poly", points2);

addPoints(points3, p4, p1, p0);

addPoints(points3, p4, p5, p1);

addprim(geoself(), "poly", points3);

addPoints(points4, p2, p6, p3);

addPoints(points4, p6, p7, p3);

addprim(geoself(), "poly", points4);

addPoints(points5, p0, p3, p4);

addPoints(points5, p3, p7, p4);

addprim(geoself(), "poly", points5);

addPoints(points6, p2, p1, p5);

addPoints(points6, p2, p5, p6);

addprim(geoself(), "poly", points6);

1辺の長さが２の立方体ができる

https://gyazo.com/1a121ba054a90014adbe75df18288d0e