GSDP:GAM100/CProcessing/CP Vector Length()
From Inside
< GSDP:GAM100 | CProcessing
CP_Vector_DotProduct()
Description
Returns the length of a CP_Vectors as a float.
Parameters
CP_Vector_Length(CP_Vector vec)
- vec - (CP_Vector) - The vector to find length of
Example
CP_Vector vector1;
CP_Vector vector2;
void init()
{
vector1 = CP_Vector_Set(CP_Random_RangeFloat(0.0f, 50.0f), CP_Random_RangeFloat(0.0f, 50.0f));
vector2 = CP_Vector_Set(CP_Random_RangeFloat(0.0f, 50.0f), CP_Random_RangeFloat(0.0f, 50.0f));
CP_Font_Set(CP_Font_GetDefault());
CP_Settings_Fill(CP_Color_Create(0, 0, 0, 255));
}
void update()
{
// Print out the randomly generated vectors
char vec_text[128] = { 0 };
sprintf_s(vec_text, 128, "1st Vector: [%.2f, %.2f]", vector1.x, vector1.y);
CP_Font_DrawText(vec_text, 0, 50);
sprintf_s(vec_text, 128, "2st Vector: [%.2f, %.2f]", vector2.x, vector2.y);
CP_Font_DrawText(vec_text, 0, 100);
// Print out finding the angle with a function
float angle = CP_Vector_Angle(vector1, vector2);
sprintf_s(vec_text, 128, "Angle (Function): %.2f", angle);
CP_Font_DrawText(vec_text, 0, 150);
// Manually figure out the angle of the two vectors
float dot = CP_Vector_DotProduct(vector1, vector2);
float length1 = CP_Vector_Length(vector1);
float length2 = CP_Vector_Length(vector2);
angle = CP_Math_Degrees((float)acos((double)(dot/(length1*length2))));
// Print out the manual angle between the two vectors
sprintf_s(vec_text, 128, "Angle (Manual): %.2f", angle);
CP_Font_DrawText(vec_text, 0, 200);
CP_Font_DrawText("They are the same!", 0, 250);
}
