Lo cheng wei: <分享>How to use timer component into C# script with multiply points

目標 : Using timer component into C# script.

檔案 : https://dl.dropbox.com/u/29860061/bouncing%20points%20with%20array.gh

流程步驟 :

1.在全域區塊(global variable)中設定需要被內部區塊改變的變數。

List<Point3d> ListPts1 = new List<Point3d>();

List<Point3d> ListPts2 = new List<Point3d>();

List<Point3d> ListPts3 = new List<Point3d>();

double[] xx = {0,1,2};

double[] yy = {0,1,2};

double[] speedx = {1,4,8};

double[] speedy = {2,2,2};

注意: 在全域區塊中 GH C# component 不能使用迴圈去assign 陣列中的數值....很奇怪

2.創建初始點，我們即將改變點的x,y座標。

Point3d myPoint = new Point3d(xx[i], yy[i], 0);

3.隨著timer 的計數器增加，點座標的x,y值會依據使用者設定的speedx/speedy 增加。

xx[i] += speedx[i];
yy[i] += speedy[i];

4.設定彈跳範圍，如果彈跳超出範圍則程式需要改變speedx/speedy 的方向。

if(x[i]x > boundX )
if(xx[i] < 0 )
if(yy[i] > boundy )
if(yy[i] < 0 )

5.清除紀錄，如果使用者重新執行bounce point，請程式清除上一次的點座標，並使x,y座標返回預設值。

ListPts1.Clear();

ListPts2.Clear();
ListPts3.Clear();
for(int i = 0;i < 3;i++){
xx[i] = yy[i] = 0;
}

Main Code:

if(start){

for(int i = 0;i < 3;i++){

Point3d myPoint = new Point3d(xx[i], yy[i], 0);

if(i == 0){
ListPts1.Add(myPoint);
}

if(i == 1){
ListPts2.Add(myPoint);
}

if(i == 2){
ListPts3.Add(myPoint);
}

xx[i] += speedx[i];
yy[i] += speedy[i];

if(xx[i] > boundX ){
xx[i] = boundX;
speedx[i] *= -1;
}

if(xx[i] < 0 ){
xx[i] = 0;
speedx[i] *= -1;
}

if(yy[i] > boundy ){
yy[i] = boundy;
speedy[i] *= -1;
}

if(yy[i] < 0 ){
yy[i] = 0;
speedy[i] *= -1;
}
}

}else{
ListPts1.Clear();
ListPts2.Clear();
ListPts3.Clear();
for(int i = 0;i < 3;i++){
xx[i] = yy[i] = 0;
}
}

A = ListPts1;
B = ListPts2;
C = ListPts3;

影片: