Translate, Rotate, Matrix

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Presentation transcript:

Translate, Rotate, Matrix Transform1: Translate, Matrices Pages 133-143

Review Curve Vertex At least 4 points: Control point1, vertex 1, vertex 2, control point2 A smooth curve is drawn between vertext1 and vertex 2 based on the control points.

Function Function Definition Calling a function Parameters Return type and return statement

Function: Intuitive Understanding Function F F(x) X

Examples Add 10 20 10 X=10, y=4 Multiply (x,y) 40 Subtract 6 4

Function concept int z = add(34, 10); // function call Function definition: int add (int x , int y) // x,y formal parameters { int sum;// sum is a local variable sum = x + y; return sum; } add 34 10 X Y sum

translate Translate function moves the origin by the amount specified int x,y; x = 10; y = 10; void draw() { background(30,50,60); pushMatrix(); translate(x,y); rect(0,5,70,30); x++; if (x> width) x = 0; y++; if (y>height) y = 0; popMatrix(); }