用processing生成屏保程序

来源：互联网发布：odk是什么意思网络用语编辑：程序博客网时间：2024/05/22 15:58

From My Blog(http://bloglong123king.sourceforge.net/?p=522)

一、想法

利用随机数控制圆圈的大小、位置以及颜色，可以产生随机的美感。

让小球动起来，并且在屏幕边界处产生反弹效果。

二、代码

float circle_x = (float) 0.0;
float circle_y = (float) 0.0;
float circle_radius = (float) 0.0;
int circle_color = 0;
public void setup() {
size(displayWidth, displayHeight);
background(0);
frameRate(10);
}
public void draw() {
circle_x = random(0, displayWidth);
circle_y = random(0, displayHeight);
circle_radius = random(0, (displayWidth + displayHeight) / 20);
circle_color = (int) random(0, 255);
colorMode(RGB, 255);
fill(0,0,0,5);
rect(0, 0, displayWidth, displayHeight);
noStroke();
colorMode(HSB, 255);
fill(circle_color, 255, 255);
ellipse(circle_x, circle_y, circle_radius, circle_radius);
}

截图

processing_screen_save_static_1

三、生成exe文件

将上述代码粘贴到Processing编辑器中，选择“Export Application”，导出成exe文件。

四、设置为屏幕保护程序

将exe文件更改后缀名为scr，右键->安装。

五、做一些变化

float circle_x = (float) 0.0;
float circle_y = (float) 0.0;
float circle_radius = (float) 0.0;
int circle_color = 0;
public void setup() {
size(displayWidth, displayHeight);
background(0);
frameRate(10);
}
public void draw() {
circle_x = random(0, displayWidth);
circle_y = random(0, displayHeight);
circle_radius = random(0, (displayWidth + displayHeight) / 5);
circle_color = (int) random(0, 255);
colorMode(RGB, 255);
// fill(0,0,0,5);
// rect(-1, -1, displayWidth+1, displayHeight+1);
//noStroke();
colorMode(HSB, 255);
stroke(circle_color, 255, 255);
fill(circle_color, 255, 255);
noFill();
ellipse(circle_x, circle_y, circle_radius, circle_radius);
ellipse(circle_x, circle_y, circle_radius-1, circle_radius-1);
}

截图

processing_screen_save_static_2

六、运动的泡泡

public static final int circle_nums = 200;
class BCircle
{
public BCircle(float x, float y, float radius, float x_delta, float y_delta, int color) {
super();
this.x = x;
this.y = y;
this.radius = radius;
this.x_delta = x_delta;
this.y_delta = y_delta;
this.color = color;
}
private float x = (float) 0.0;
private float y = (float) 0.0;
private float radius = (float) 0.0;
private float x_delta = (float) 0.0;
private float y_delta = (float) 0.0;
private int color = 0; // 0 - 255
private boolean valueInRange(float val, float min, float max)
{
return (val >= min >> val < max);
}
public void moveOneStep()
{
if (valueInRange(x+x_delta, 0, displayWidth) >>
valueInRange(y+y_delta, 0, displayHeight))
{
x += x_delta;
y += y_delta;
}
if (!valueInRange(x+x_delta, 0, displayWidth))
{
x_delta = -x_delta;
x += x_delta;
}
if (!valueInRange(y+y_delta, 0, displayHeight))
{
y_delta = - y_delta;
y += y_delta;
}
}
public void draw(int theme)
{
switch(theme)
{
case 1:
{
noFill();
colorMode(HSB, 255);
stroke(color, 255, 255);
ellipse(x, y, radius+2, radius+2);
ellipse(x, y, radius+1, radius+1);
ellipse(x, y, radius, radius);
}
break;
case 2:
{
colorMode(HSB, 255);
fill(color, 255, 255);
ellipse(x, y, radius+2, radius+2);
ellipse(x, y, radius+1, radius+1);
ellipse(x, y, radius, radius);
}
}
}
}
List<BCircle> circles;
public void setup() {
size(displayWidth, displayHeight);
background(0);
frameRate(10);
circles = new ArrayList<BCircle>(circle_nums);
}
public void draw() {
colorMode(RGB, 255);
fill(0,0,0,30);
rect(-1, -1, displayWidth+1, displayHeight+1);
if (circles.size() < circle_nums)
{
float x = random(0, displayWidth);
float y = random(0, displayHeight);
float radius = random(20, (displayWidth + displayHeight) / 20);
float x_delta = random(-50, 50);
float y_delta = random(-50, 50);
int color = (int) random(0, 255);
BCircle circle = new BCircle(x, y, radius, x_delta, y_delta, color);
circles.add(circle);
}
for(int i=0;i<circles.size();i++)
{
circles.get(i).moveOneStep();
circles.get(i).draw(1);
}
}

两种主题，截图

processing_screen_save_1

processing_screen_save_2