How to use

cos

method

in

processing.core.PApplet

protected void lightSpot(int num, float angle, float exponent) {
 lightSpotParameters[2 * num + 0] = Math.max(0, PApplet.cos(angle));
 lightSpotParameters[2 * num + 1] = exponent;
}

protected void lightSpot(int num, float angle, float exponent) {
 lightSpotParameters[2 * num + 0] = Math.max(0, PApplet.cos(angle));
 lightSpotParameters[2 * num + 1] = exponent;
}

/**
 * ( begin auto-generated from PVector_rotate.xml )
 *
 * Rotate the vector by an angle (only 2D vectors), magnitude remains the same
 *
 * ( end auto-generated )
 *
 * @webref pvector:method
 * @usage web_application
 * @brief Rotate the vector by an angle (2D only)
 * @param theta the angle of rotation
 */
public void rotate(float theta) {
 float xTemp = x;
 // Might need to check for rounding errors like with angleBetween function?
 x = x*PApplet.cos(theta) - y*PApplet.sin(theta);
 y = xTemp*PApplet.sin(theta) + y*PApplet.cos(theta);
}

/**
 * ( begin auto-generated from PVector_rotate.xml )
 *
 * Rotate the vector by an angle (only 2D vectors), magnitude remains the same
 *
 * ( end auto-generated )
 *
 * @webref pvector:method
 * @usage web_application
 * @brief Rotate the vector by an angle (2D only)
 * @param theta the angle of rotation
 */
public PVector rotate(float theta) {
 float temp = x;
 // Might need to check for rounding errors like with angleBetween function?
 x = x*PApplet.cos(theta) - y*PApplet.sin(theta);
 y = temp*PApplet.sin(theta) + y*PApplet.cos(theta);
 return this;
}

static private void invRotate(PMatrix3D matrix, float angle,
               float v0, float v1, float v2) {
 float c = PApplet.cos(-angle);
 float s = PApplet.sin(-angle);
 float t = 1.0f - c;
 matrix.preApply((t*v0*v0) + c, (t*v0*v1) - (s*v2), (t*v0*v2) + (s*v1), 0,
         (t*v0*v1) + (s*v2), (t*v1*v1) + c, (t*v1*v2) - (s*v0), 0,
         (t*v0*v2) - (s*v1), (t*v1*v2) + (s*v0), (t*v2*v2) + c, 0,
         0, 0, 0, 1);
}

static private void invRotate(PMatrix3D matrix, float angle,
               float v0, float v1, float v2) {
 float c = PApplet.cos(-angle);
 float s = PApplet.sin(-angle);
 float t = 1.0f - c;
 matrix.preApply((t*v0*v0) + c, (t*v0*v1) - (s*v2), (t*v0*v2) + (s*v1), 0,
         (t*v0*v1) + (s*v2), (t*v1*v1) + c, (t*v1*v2) - (s*v0), 0,
         (t*v0*v2) - (s*v1), (t*v1*v2) + (s*v0), (t*v2*v2) + c, 0,
         0, 0, 0, 1);
}

float c = PApplet.cos(angle);
float s = PApplet.sin(angle);

float c = PApplet.cos(angle);
float s = PApplet.sin(angle);

float cosPhi = PApplet.cos(phi),  sinPhi = PApplet.sin(phi);
 (PApplet.sqrt(4 + 3 * PApplet.sq(PApplet.tan(inc / 2))) - 1) / 3;
float sinPhi1 = PApplet.sin(phi1),  cosPhi1 = PApplet.cos(phi1);
 float sinEta = PApplet.sin(eta),  cosEta = PApplet.cos(eta);

float alpha = 200 * ((1 - PApplet.cos(a)) * 0.5f);
pg.fill(color(160, alpha));
pg.noStroke();

float corrAlpha = (1 - PApplet.cos(a)) * 0.5f;
boolean selCorrTri = false;