colorMode()颜色模式

Name

colorMode()颜色模式

Examples

noStroke();

colorMode(RGB, 100);

for (int i = 0; i < 100; i++) {

for (int j = 0; j < 100; j++) {

stroke(i, j, 0);

point(i, j);

}

}

noStroke();

colorMode(HSB, 100);

for (int i = 0; i < 100; i++) {

for (int j = 0; j < 100; j++) {

stroke(i, j, 100);

point(i, j);

}

}

// If the color is defined here, it won’t be

// affected by the colorMode() in setup().

// Instead, just declare the variable here and

// assign the value after the colorMode() in setup()

//color bg = color(180, 50, 50); // No

color bg; // Yes, but assign it in setup()

void setup() {

size(100, 100);

colorMode(HSB, 360, 100, 100);

bg = color(180, 50, 50);

}

void draw() {

background(bg);    

}

Description

Changes the way Processing interprets color data. By default, the parameters for fill(), stroke(), background(), and color() are defined by values between 0 and 255 using the RGB color model. The colorMode() function is used to change the numerical range used for specifying colors and to switch color systems. For example, calling colorMode(RGB, 1.0) will specify that values are specified between 0 and 1. The limits for defining colors are altered by setting the parameters max, max1, max2, max3, and maxA. 

After changing the range of values for colors with code like colorMode(HSB, 360, 100, 100), those ranges remain in use until they are explicitly changed again. For example, after running colorMode(HSB, 360, 100, 100) and then changing back to colorMode(RGB), the range for R will be 0 to 360 and the range for G and B will be 0 to 100. To avoid this, be explicit about the ranges when changing the color mode. For instance, instead of colorMode(RGB), write colorMode(RGB, 255, 255, 255).

更改处理解释颜色数据的方式。默认情况下, 填充 ()、描边 ()、背景 () 和颜色 () 的参数是使用 RGB 颜色模型在0和255之间的值定义的。colorMode () 函数用于更改用于指定颜色和切换颜色系统的数值范围。例如, 调用 colorMode (RGB, 1.0) 将指定在0和1之间指定值。定义颜色的限制通过设置参数 max、max1、max2、max3 和 maxA 来改变。

在更改颜色值的范围 (如 colorMode (HSB、360、100、100) 之后, 这些范围将一直使用, 直到它们再次显式更改。例如, 在运行 colorMode (HSB、360、100、100) 之后, 再更改回 colorMode (RGB), R 的范围将为0到 360, G 和 B 的范围将为0到100。若要避免这种变化, 请在更改颜色模式时明确有关范围。例如, 而不是 colorMode (rgb), 写 colorMode (rgb, 255, 255, 255)。

Syntax

colorMode(mode)

colorMode(mode, max)

colorMode(mode, max1, max2, max3)

colorMode(mode, max1, max2, max3, maxA)

Parameters

Returns

void

Related

background()
fill()
stroke()