使用某些 UI 元素后模拟停止
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【中文标题】使用某些 UI 元素后模拟停止【英文标题】：Simulation stops after certain UI elements are used 【发布时间】：2022-01-06 08:23:57 【问题描述】：我正在处理一个正在处理的项目，但我在处理这个超级烦人的错误时遇到了一些困难。全部代码贴在下面，4个类文件。
每当“模拟速度”滑块向上移动然后向下移动时，模拟就会停止，不会出现错误。与“自动”按钮相同。我不知道为什么会发生这种情况，我已经按照变量检查了我的代码，我没有发现任何错误。
救命！
noisedemo 文件
int tableHeight = 20;
int tableWidth = 20;
float prismWidth = 10;
float tableTopx = 260;
float tableTopy = 200;
int k = 0;
int simulationSpeed;
int frameCounter;
Prism[][] prisms = new Prism[tableWidth][tableHeight];
//Declare the sliders
Slider simulationSpeedSlider = new Slider(10, 20, 100, 30, "Simulation Speed");
Slider noiseOctaveSlider = new Slider(10, 50, 100, 4, "Noise Ocatave");
Slider noiseScaleSlider = new Slider(10, 80, 100, 10, 10, "Noise Scale", true);
//Declare the buttons
Button autoScrollButton = new Button(400, 100, "Auto");
void setup()
size(500, 500);
smooth();
pixelDensity(2);
frameRate(30);
noiseDetail((int)noiseOctaveSlider.sliderValue, noiseScaleSlider.sliderValue);
for(int i = 0; i < 20; i++)
for(int j = 0; j < 20; j++)
prisms[i][j] = new Prism(noise(i, j)*30+10, prismWidth);
prisms[i][j].setHeight(noise(i, j)*30+10);
float[] convertCoordinate(int xcoord, int ycoord, float xtop, float ytop, float pwidth)
float[] coord = new float[2];
coord[0] = (xtop + xcoord*cos(radians(40))*prismWidth - ycoord * cos(radians(40))*prismWidth)*0.95;
coord[1] = (ytop + ycoord*sin(radians(40))*prismWidth + xcoord * sin(radians(40))*prismWidth)*0.95;
return coord;
void updateHeight()
for(int i = 0; i < tableWidth; i++)
for(int j = 0; j < tableHeight; j++)
prisms[i][j].drawPrism(convertCoordinate(i, j, tableTopx, tableTopy, prismWidth)[0], convertCoordinate(i, j, tableTopx, tableTopy, prismWidth)[1]);
void setHeight()
for(int i = 0; i < tableWidth; i++)
for(int j = 0; j < tableHeight; j++)
prisms[i][j].setHeight(noise(i+k, j+k)*30+10);
void mouseClicked()
if(autoScrollButton.isInRange())
autoScrollButton.buttonActive = !autoScrollButton.buttonActive;
void draw()
background(0, 150, 0);
noiseDetail((int)noiseScaleSlider.sliderValue, noiseScaleSlider.sliderValue);
simulationSpeedSlider.drawSlider();
simulationSpeed = (int)simulationSpeedSlider.sliderValue;
noiseOctaveSlider.drawSlider();
noiseScaleSlider.drawSlider();
autoScrollButton.drawButton();
if(frameCounter == simulationSpeed && autoScrollButton.buttonActive)
k++;
frameCounter = 0;
setHeight();
updateHeight();
frameCounter++;
按钮文件
class Button
boolean buttonActive = true;
float buttonX;
float buttonY;
float buttonWidth = 30;
float buttonHeight = 15;
String buttonLabel;
Button(float x, float y, String label)
buttonX = x;
buttonY = y;
buttonLabel = label;
void drawButton()
if(!buttonActive)
fill(100);
rect(buttonX, buttonY, buttonWidth, buttonHeight, 5);
fill(255);
text(buttonLabel, buttonX + 4, buttonY + 10);
else
fill(200);
rect(buttonX, buttonY, buttonWidth, buttonHeight, 5);
fill(0);
text(buttonLabel, buttonX + 4, buttonY + 10);
boolean isInRange()
if(mouseX > buttonX && mouseX < buttonX + buttonWidth && mouseY > buttonY && mouseY < buttonY + buttonHeight)
return true;
else
return false;
棱镜文件
class Prism
float pheight;
float pwidth;
Prism(float tempheight, float tempwidth)
pheight = tempheight;
pwidth = tempwidth;
Prism()
pheight = 10;
pwidth = 5;
void drawPrism(float x, float y)
noStroke();
fill(175);
quad(x, y, x - cos(radians(40))*pwidth, y - sin(radians(40))*pwidth, x - cos(radians(40))*pwidth, y - sin(radians(40))*pwidth - pheight, x, y - pheight);
fill(100);
quad(x, y, x + cos(radians(40))*pwidth, y - sin(radians(40))*pwidth, x + cos(radians(40))*pwidth, y - sin(radians(40))*pwidth - pheight, x, y - pheight);
fill(225);
quad(x, y - pheight, x - cos(radians(40))*pwidth, y - sin(radians(40))*pwidth - pheight, x, y - 2*sin(radians(40))*pwidth - pheight, x + cos(radians(40))*pwidth, y - sin(radians(40))*pwidth - pheight);
void setHeight(float tempheight)
pheight = tempheight;
滑块文件
class Slider
float sliderLength;
float sliderX;
float sliderY;
float sliderWidth;
float handleWidth;
float sliderValue;
float sliderPos;
int sliderTotal;
boolean handleActive;
boolean isPrecise;
String sliderLabel;
//provide x and y position, length and the max value, the least amount of info
Slider(float x, float y, float slength, int total)
sliderX = x;
sliderY = y;
sliderLength = slength;
sliderWidth = 10;
handleWidth = sliderWidth*1.5;
sliderTotal = total;
sliderPos = sliderX + sliderWidth/2;
sliderLabel = "";
//provide x and y position, length and the max value AND a label
Slider(float x, float y, float slength, int total, String label)
sliderX = x;
sliderY = y;
sliderLength = slength;
sliderWidth = 10;
handleWidth = sliderWidth*1.5;
sliderTotal = total;
sliderPos = sliderX + sliderWidth/2;
sliderLabel = label;
//provide default values AND a label AND a width AND whether its precise
Slider(float x, float y, float slength, float swidth, int total, String label, boolean p)
sliderX = x;
sliderY = y;
sliderLength = slength;
sliderWidth = swidth;
handleWidth = sliderWidth*1.5;
sliderTotal = total;
sliderPos = sliderX + sliderWidth/2;
sliderLabel = label;
isPrecise = p;
void drawSlider()
fill(255);
textSize(10);
text(sliderLabel, sliderX, sliderY - 5);
text(sliderValue, sliderX + sliderLength + 7, sliderY + sliderWidth/1.1);
fill(100);
rect(sliderX-1, sliderY, sliderLength+1, sliderWidth, 5);
fill(255);
ellipse(sliderPos, sliderY + (sliderWidth/2), handleWidth, handleWidth);
if(!isPrecise)
sliderValue = (int)((sliderPos - sliderX)/(sliderLength/sliderTotal));
else if(isPrecise)
sliderValue = (sliderPos - sliderX)/(sliderLength/sliderTotal);
if(mouseX >= sliderX && mouseX <= sliderX+sliderLength + sliderX && mouseY >= sliderY - (handleWidth/2) && mouseY <= sliderY + (handleWidth/2) && mousePressed)
handleActive = true;
if(!mousePressed)
handleActive = false;
if(handleActive && sliderPos <= sliderX + sliderLength && sliderPos >= sliderX)
sliderPos = mouseX;
if(sliderPos > sliderX + sliderLength)
sliderPos = sliderX + sliderLength;
if(sliderPos < sliderX)
sliderPos = sliderX + 1;
谢谢！对不起，如果代码有点乱:)
【问题讨论】：
【参考方案1】：在您的主文件中，此块依赖于这两个控件的值：
if(frameCounter == simulationSpeed && autoScrollButton.buttonActive)
k++;
frameCounter = 0;
setHeight();
当它被跳过时（因为您更改了 simulationSpeed 或 buttonActive），您的 frameCounter 与 simulationSpeed 不同步，因此该块继续被跳过。
【讨论】：
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