public void create()
{
ViewVolumeShape view_volume_shape = new ViewVolumeShape();
for (int i = 0; i < this.particles.Count; i++)
{
Particle particle = this.particles[i];
particle.create(view_volume_shape, 0.1f, 10000.0f);
particle.pos = new Vector3(0.0f, 1.0f, 0.0f);
}
}
public static void calcViewVolumeShape(ViewVolumeShape shape, float fovy, float aspect)
{
Vector3 v;
v.z = 1.0f;
v.y = Mathf.Tan(fovy * Mathf.Deg2Rad / 2.0f);
v.x = v.y * aspect;
shape.rt = v;
shape.rb = v;
shape.rb.y *= -1.0f;
shape.lt = v;
shape.lt.x *= -1.0f;
shape.lb = v;
shape.lb.x *= -1.0f;
shape.lb.y *= -1.0f;
}
public void create(ViewVolumeShape view_volume, float z_near, float z_far /*, const Matrix4x4f& matrix*/)
{
int i;
float all;
float[] ratio = new float[3];
float param_min, param_max;
param_min = Mathf.Abs(z_near);
param_max = Mathf.Abs(z_far);
// ・min <= (ratio[0] + ratio[1] + ratio[2]) <= max
// ・ratio[0] ～ ratio[2] はランダム
//
all = Random.Range(param_min, param_max);
ratio[0] = Random.value * all;
ratio[1] = Random.value * (all - ratio[0]);
ratio[2] = all - (ratio[0] + ratio[1]);
this.cam_local = Vector3.zero;
if (Random.value < 0.5f)
{
this.cam_local = this.cam_local + view_volume.rt * ratio[0];
this.cam_local = this.cam_local + view_volume.rb * ratio[1];
this.cam_local = this.cam_local + view_volume.lt * ratio[2];
}
else
{
this.cam_local = this.cam_local + view_volume.lt * ratio[0];
this.cam_local = this.cam_local + view_volume.lb * ratio[1];
this.cam_local = this.cam_local + view_volume.rb * ratio[2];
}
this.cam_local_prev = this.cam_local;
//this.pos = matrix.transform(this.cam_local);
// ------------------------------------------------------------ //
this.rot.y = Mathf.Lerp(-180.0f, 180.0f, Random.value);
this.rot.x = Mathf.Lerp(0.0f, 30.0f, Random.value);
this.rot.z = 0.0f;
this.spin.y_ofst = Mathf.Lerp(-10.0f, 10.0f, Random.value);
this.spin.z_omega = Mathf.Lerp(10.0f, 45.0f, Random.value);
this.spin.z_ang = 0.0f;
/*
* // スピードの初期値を求める（近似計算です）
* this.calc_init_speed();
*
* // ------------------------------------------------------------ //
*
* this.set_color(Color.white);
*
* // ------------------------------------------------------------ //
*
* for(i = 0;i < SHAPE_VERTEX_NUM;i++) {
*
* this.vertices[i].uv.u = shape[i].uv.u;
* this.vertices[i].uv.v = shape[i].uv.v;
* }
*/
}
// クリッパー（クリップ平面＝ビューボリュームの各面）を作る.
public static void createClipper(ViewVolumeClipper clipper, ViewVolumeShape view_volume, float z_min, float z_max)
{
// left
clipper.plane[(int)VIEW_VOLUME_PLANE.LEFT].tri[0] = Vector3.zero;
clipper.plane[(int)VIEW_VOLUME_PLANE.LEFT].tri[1] = view_volume.lb;
clipper.plane[(int)VIEW_VOLUME_PLANE.LEFT].tri[2] = view_volume.lt;
clipper.plane[(int)VIEW_VOLUME_PLANE.LEFT].is_rect = false;
// right
clipper.plane[(int)VIEW_VOLUME_PLANE.RIGHT].tri[0] = Vector3.zero;
clipper.plane[(int)VIEW_VOLUME_PLANE.RIGHT].tri[1] = view_volume.rt;
clipper.plane[(int)VIEW_VOLUME_PLANE.RIGHT].tri[2] = view_volume.rb;
clipper.plane[(int)VIEW_VOLUME_PLANE.RIGHT].is_rect = false;
// top
clipper.plane[(int)VIEW_VOLUME_PLANE.TOP].tri[0] = Vector3.zero;
clipper.plane[(int)VIEW_VOLUME_PLANE.TOP].tri[1] = view_volume.lt;
clipper.plane[(int)VIEW_VOLUME_PLANE.TOP].tri[2] = view_volume.rt;
clipper.plane[(int)VIEW_VOLUME_PLANE.TOP].is_rect = false;
// bottom
clipper.plane[(int)VIEW_VOLUME_PLANE.BOTTOM].tri[0] = Vector3.zero;
clipper.plane[(int)VIEW_VOLUME_PLANE.BOTTOM].tri[1] = view_volume.rb;
clipper.plane[(int)VIEW_VOLUME_PLANE.BOTTOM].tri[2] = view_volume.lb;
clipper.plane[(int)VIEW_VOLUME_PLANE.BOTTOM].is_rect = false;
// near
clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].tri[0] = view_volume.rb;
clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].tri[1] = view_volume.lb;
clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].tri[2] = view_volume.rt;
for (int i = 0; i < 3; i++)
{
clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].tri[i] = clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].tri[i] * z_min;
}
clipper.plane[(int)VIEW_VOLUME_PLANE.NEAR].is_rect = true;
// far
clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].tri[0] = view_volume.lb;
clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].tri[1] = view_volume.rb;
clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].tri[2] = view_volume.lt;
for (int i = 0; i < 3; i++)
{
clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].tri[i] = clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].tri[i] * z_max;
}
clipper.plane[(int)VIEW_VOLUME_PLANE.FAR].is_rect = true;
// ------------------------------------------------------------ //
for (int i = 0; i < (int)VIEW_VOLUME_PLANE.NUM; i++)
{
ViewVolumeClipper.Plane plane = clipper.plane[i];
if (!MathUtility.calcPolygonNormal(ref plane.normal, plane.tri))
{
plane.normal = Vector3.up;
}
plane.space = MathUtility.calcTriSpace(plane.tri, plane.is_rect);
if (i == (int)VIEW_VOLUME_PLANE.NEAR || i == (int)VIEW_VOLUME_PLANE.FAR)
{
}
else
{
// NEAR と FAR 以外は Z の範囲が 0.0 ～ 1.0 なので。
// （本当は zmin ～ zmax の大きさ）
plane.space *= MathUtility.square(z_max);
}
}
}
