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Drawing a house with functions

[2 Replies]
- 24-Feb-2013 08:51 PM
- Forum: Programming Questions
Ok, so I have the code to draw a house given to me by my professor , but when I try using functions to make it work, nothing happens.Once I start throwing voids in there It kills the program. Obviously I'm doing something wrong here and I'd appreciate any insight from anyone.
Here are the assignment instructions:
The functions that you should write are:
- void drawFrameArea()
  Which draws the bottom half of the house.
- void drawRoofArea()
  Which draws the top half of the house.
These two functions will call the following functions:
- void drawFrame()
  Which draws the brick frame of the house.
- void drawWindow(float xCenter, float yCenter)
  Which draws one window whose center is located at (xCenter, yCenter) including the lit window and the framing bars.
- void drawDoor()
  Which draw the door and the doorknob.
- void drawChimney()
  Which draws the brick chimney.
- void drawRoof()
  Which draws to triangular roof.
The code that calls the top-level, area, functions will be called from the function:
- void setup()
And heres my code.
// Define the size of the sketch.

void setup(){

final int WIDTH = 500, HEIGHT = WIDTH; // Square canvas.

// Set sketch canvas size and smooth lines.

size(WIDTH, HEIGHT);

smooth();

}

// Define colors of the components.

final color BLACK = color( 0, 0, 0);

final color BRICK = color(160, 0, 0);

final color ROOF = color( 0, 128, 0);

final color LIGHT = color(255, 255, 0);

final color WOOD = color(128, 96, 64);

final color KNOB = color(224, 192, 64);

// Define the proportions (fractions) used to build the house.

final float HORIZ_MARGIN = 0.10 * WIDTH;

final float VERT_MARGIN = 0.10 * HEIGHT;

final float FRAME_LEFT = HORIZ_MARGIN;

final float FRAME_RIGHT = WIDTH - HORIZ_MARGIN;

final float FRAME_WIDTH = FRAME_RIGHT - FRAME_LEFT;

final float FRAME_HEIGHT = 0.50 * HEIGHT;

final float FRAME_BOTTOM = HEIGHT - VERT_MARGIN;

final float FRAME_TOP = FRAME_BOTTOM - FRAME_HEIGHT;

final float ROOF_LEFT = FRAME_LEFT;

final float ROOF_RIGHT = FRAME_RIGHT;

final float ROOF_CENTER = (ROOF_LEFT + ROOF_RIGHT) / 2;

final float ROOF_WIDTH = FRAME_WIDTH;

final float ROOF_HEIGHT = 0.30 * HEIGHT;

final float ROOF_BOTTOM = FRAME_TOP;

final float ROOF_TOP = ROOF_BOTTOM - ROOF_HEIGHT;

final float CHIMNEY_LEFT = 0.90 * ROOF_WIDTH;

final float CHIMNEY_WIDTH = 0.10 * ROOF_WIDTH;

final float CHIMNEY_HEIGHT = 0.75 * ROOF_HEIGHT;

final float CHIMNEY_TOP = ROOF_BOTTOM - CHIMNEY_HEIGHT;

final float WINDOW_WIDTH = 0.15 * FRAME_WIDTH;

final float WINDOW_HEIGHT = 0.30 * FRAME_HEIGHT;

final float LEFT_WINDOW_CENTER = FRAME_LEFT + 0.25 * FRAME_WIDTH;

final float RIGHT_WINDOW_CENTER = FRAME_LEFT + 0.75 * FRAME_WIDTH;

final float WINDOW_VERT_CENTER = FRAME_TOP + 0.30 * FRAME_HEIGHT;

final float DOOR_WIDTH = 0.15 * FRAME_WIDTH;

final float DOOR_HEIGHT = 0.40 * FRAME_HEIGHT;

final float DOOR_HORIZ_CENTER = FRAME_LEFT + FRAME_WIDTH / 2;

final float DOOR_VERT_CENTER = FRAME_BOTTOM - DOOR_HEIGHT / 2;

final float DOOR_KNOB_HORIZ_CENTER = DOOR_HORIZ_CENTER + 0.40 * DOOR_WIDTH;

final float DOOR_KNOB_VERT_CENTER = DOOR_VERT_CENTER;

final float DOOR_KNOB_DIAM = 0.10 * DOOR_WIDTH;

float left, right, top, bottom;

// Draw the frame of the house in BRICK.

void drawFrame(){

fill(BRICK);

rect(FRAME_LEFT, FRAME_TOP,

FRAME_WIDTH, FRAME_HEIGHT);

}

// Draw the chimney of the house in BRICK (before the roof).

void drawChimney(){

rect(CHIMNEY_LEFT, CHIMNEY_TOP,

CHIMNEY_WIDTH, CHIMNEY_HEIGHT);

}

// Draw the roof of the house in ROOF.

void drawRoof(){

fill(ROOF);

triangle(ROOF_LEFT, ROOF_BOTTOM,

ROOF_RIGHT, ROOF_BOTTOM,

ROOF_CENTER, ROOF_TOP);

}

// Draw the windows.

void drawWindow(){

fill(LIGHT);

rectMode(CENTER);

rect(LEFT_WINDOW_CENTER, WINDOW_VERT_CENTER,

WINDOW_WIDTH, WINDOW_HEIGHT);

rect(RIGHT_WINDOW_CENTER, WINDOW_VERT_CENTER,

WINDOW_WIDTH, WINDOW_HEIGHT);

// Draw the window panes.

left = LEFT_WINDOW_CENTER - WINDOW_WIDTH / 2;

right = LEFT_WINDOW_CENTER + WINDOW_WIDTH / 2;

line(left, WINDOW_VERT_CENTER, right, WINDOW_VERT_CENTER);

top = WINDOW_VERT_CENTER - WINDOW_HEIGHT / 2;

bottom = WINDOW_VERT_CENTER + WINDOW_HEIGHT / 2;

line(LEFT_WINDOW_CENTER, top, LEFT_WINDOW_CENTER, bottom);

left = RIGHT_WINDOW_CENTER - WINDOW_WIDTH / 2;

right = RIGHT_WINDOW_CENTER + WINDOW_WIDTH / 2;

line(left, WINDOW_VERT_CENTER, right, WINDOW_VERT_CENTER);

top = WINDOW_VERT_CENTER - WINDOW_HEIGHT / 2;

bottom = WINDOW_VERT_CENTER + WINDOW_HEIGHT / 2;

line(RIGHT_WINDOW_CENTER, top, RIGHT_WINDOW_CENTER, bottom);

}

// Draw the door.

void drawDoor(){

fill(WOOD);

rect(DOOR_HORIZ_CENTER, DOOR_VERT_CENTER, DOOR_WIDTH, DOOR_HEIGHT);

// Draw the door knob.

noStroke();

fill(KNOB);

ellipse(DOOR_KNOB_HORIZ_CENTER, DOOR_KNOB_VERT_CENTER,

DOOR_KNOB_DIAM, DOOR_KNOB_DIAM);

}

void drawFrameArea(){

drawFrame();

drawWindow();

drawDoor();

}

void drawRoofArea(){

drawRoof();

drawChimney();

}

I'm new at this, and I should probably research this a bit more but I would appreciate help because I've been trying this (presumably simple) task for hours. Thanks.

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