2d Composite Transformation Program In Computer Graphics Using C

Sep 03, 2015  2D Tranforamations (C Language) Translation Scaling Rotation Reflection Shearing Code Interester. COMPUTER GRAPHICS - EXAMPLES ON BASIC 2D TRANSFORMATIONS.

If a point (x, y, z) is rotated through angle θ about x – axis to a new point (x’, y’, z’) then the new point is calculated as y’ = y cosθ – z sinθ z’ = y sinθ + z cosθ x’ = x About y – axis z’ = z cosθ – x sinθ x’ = z sinθ + x cosθ y’ = y About z – axis x’ = x cosθ – y sinθ y’ = x sinθ + y cosθ z’ = z Scaling Scaling with respect a selected fixed position (xf, yf, zf) can be represented with the following transformation sequence: 1. Translate the fixed point to the origin 2. Scale the object relative to the coordinate origin 3. Translate the fixed point back to its original position The equations for this sequence of transformation is (where s is scaling factor) x’ = x * s + (1 – s) * xf y’ = y *s + (1 – s) * yf z’ = z * s + (1 – s) * zf Source Code.

Problem Definition: Write a program to implement 2-D Transformations viz., (a) Translation (b) Rotation (c) Scaling for an Object. #include #include #include #include void main(){ int x1=200,y1=200,x2=250,y2=250,x3=180,y3=270,option; int gdriver = DETECT,gmode; initgraph(&gdriver,&gmode,”C: TC BGI”); do{ cleardevice(); gotoxy(1,1); line(x1,y1,x2,y2); line(x2,y2,x3,y3); line(x3,y3,x1,y1); cout>option; switch(option){ case 1: float tx,ty; cout>tx>>ty; x1+=tx;x2+=tx;x3+=tx; y1+=ty;y2+=ty;y3+=ty; break; case 2: float sx,sy.

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