iphone - Coloring of a rectangle -

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i'm newbie graphics.i'm drawing rectangle change color after 1 second.

- (void)drawrect:(cgrect)rect {     [self setwidthheightofrectangle];     [self changecolorofnumbers];     cgcontextref ctx = uigraphicsgetcurrentcontext();     cgcontextclearrect(ctx, rect);      // draw solid square      cgcontextsetrgbfillcolor(ctx, 255, 255, 255, 1);     cgcontextfillrect(ctx, cgrectmake(0.0, 24.0, 380.0, 2.0));     cgcontextsetrgbfillcolor(ctx, rednumber, greennumber, bluenumber, 1);     cgcontextfillrect(ctx, frametodraw); }

i'm changing color of rectangle using changecolorofnumbers method. here method

- (void)changecolorofnumbers { ihit++; if (ihit==100) {     rednumber=249;     greennumber=252;     bluenumber=0;  } else if (ihit==200) {     rednumber=0;     greennumber=168;     bluenumber=245;  } else if (ihit==300) {     rednumber=255;     greennumber=0;     bluenumber=140;  } else if (ihit==400) {     rednumber=255;     greennumber=125;     bluenumber=0;  } else if (ihit==500) {     rednumber=0;     greennumber=176;     bluenumber=72;  } else if (ihit==600) {     rednumber=128;     greennumber=0;     bluenumber=148;  } else if (ihit==700) {     rednumber=8;     greennumber=79;     bluenumber=168;  } else if (ihit==800) {     rednumber=127;     greennumber=212;     bluenumber=20;  } else if (ihit==900) {     rednumber=255;     greennumber=0;     bluenumber=0;  } else if (ihit==1) {     rednumber=0;     greennumber=0;     bluenumber=0;     frametodraw=cgrectmake(0.0, 0.0, 0.0, 50.0); } else if (ihit==2) {     rednumber=255;     greennumber=255;     bluenumber=255; } }

problem some of rgb colors i'm applying aren't showing up. doing wrong here?.....

thanks...

color components must vary 0 1 - try normalize them dividing on 255.0f;


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