GSDP:GAM100/CProcessing/CP Color
From Inside
< GSDP:GAM100 | CProcessing
CP_Color
Description
CP_Color is a type that stores color values in red, green and blue components (RGB). The function CP_Color_Create() can be used to create a color and you can also access the individual color values directly or as an array.
Each color channel is represented by a number between 0 and 255. Where 0 is no color and 255 is full color for that channel. Some example colors:
black - CP_Color_Create(0, 0, 0, 255)
white - CP_Color_Create(255, 255, 255, 255)
gray 50% - CP_Color_Create(128, 128, 128, 255)
red - CP_Color_Create(255, 0, 0, 255)
green - CP_Color_Create(0, 255, 0, 255)
blue - CP_Color_Create(0, 0, 255, 255)
Example
void update()
{
// Use the CP_Color_Create function with the values of our background color
CP_Color color1 = CP_Color_Create(255, 40, 100, 255);
// Set the background with color1 (berry red)
CP_Settings_Background(color1);
// Create a second color and access its values individually
CP_Color color2;;
color2.r = 0; // Red
color2.g = 200; // Green
color2.b = 255; // Blue
color2.a = 255; // Alpha (transparency)
// Set the fill color for shapes with color2
CP_Settings_Fill(color2);
// Draw a rectangle at the top left of the screen (blue)
float rectWidth = CP_System_GetCanvasWidth() * 0.7f;
float rectHeight = CP_System_GetCanvasHeight() * 0.7f;
CP_Graphics_DrawRect(0, 0, rectWidth, rectHeight);
// Create a third CP_Color and set the values by accessing the array
CP_Color color3;
color3.rgba[0] = 150; // Red
color3.rgba[1] = 255; // Green
color3.rgba[2] = 40; // Blue
color3.rgba[3] = 255; // Alpha (transparency)
// Set the fill color for the final shape
CP_Settings_Fill(color3);
// Draw another smaller rectange (green)
rectWidth = CP_System_GetCanvasWidth() * 0.4f;
rectHeight = CP_System_GetCanvasHeight() * 0.4f;
CP_Graphics_DrawRect(0, 0, rectWidth, rectHeight);
}
