practica repaso examen de MVG

ej1.m

clear

w = 500;
h = 500;
x = 0;
y = 0;
bg = 'white';

marco(x,y,w,h, bg);
ventana(0.1, 0.1, 0.8, 0.8, -6,6, -1,9, -2,2);

pol1_x = [-1 -1 1 1];
pol1_y = [0 1 1 0];

pol2_x = [-1 0 1];
pol2_y = [0 1 0];

center1_x = mean(pol1_x);
center1_y = mean(pol2_y);
center1   = [center1_x; center1_y; 0; 1];

center2_x = mean(pol2_x);
center2_y = mean(pol2_y);
center2   = [center2_x; center2_y; 0; 1];

pol1 = [pol1_x; pol1_y; zeros(1, length(pol1_x)); ones(1, length(pol1_x))];
pol2 = [pol2_x; pol2_y; zeros(1, length(pol2_x)); ones(1, length(pol2_x))];

%T1 = traslacion([0 (2 - center1_y ) 0 ]);
T2 = traslacion([0 5 0]);

s1 = [2 5 1];
s2 = [2 3 1];
S1 = escalado(s1, [0;0;0]);
S2 = escalado(s2, [0;0;0]);

T3 = traslacion([0 5.5 0]);
S3 = escalado([0.25 0.5 1], [0;0;0]);

T4 = traslacion([0 4 0]);
S4 = escalado([0.5 2 1], [0;0;0]);

R = rotacion(pi/4, [0;6;0], 'z');
R2 = rotacion(pi/2, [0;6;0], 'z');

base = S1 * pol1;
tejado = T2 * S2 * pol2;
ventana_izq = traslacion([1 3.5 0]) * S3 * pol1;
ventana_cen = traslacion([0 3.5 0]) * S3 * pol1;
ventana_der = traslacion([-1 3.5 0]) * S3 * pol1;

aspa = R * T4 * S4 * pol2;
aspa2 = R2 * R * T4 * S4 * pol2;
aspa3 = R2 * R2 * R * T4 * S4 * pol2;
aspa4 = R2 * R2 * R2 * R * T4 * S4 * pol2;

A = afilamiento([1 1], 'x');

hierba = A * escalado([0.25 0.5 0], [0;0;0]) * pol1;

% la funcion simetria recibe el vector normal al eje

M = simetria([1 0 0]);
SA = escalado([0.25 0.5 0], [0;0;0]);

hierba2 = M * A * SA * pol1;

hold on;

fill(base(1, :), base(2, :), 'white');
fill(tejado(1, :), tejado(2, :), [0.7 0.5 0.3]);
fill(ventana_izq(1, :), ventana_izq(2, :), 'black');
fill(ventana_cen(1, :), ventana_cen(2, :), 'black');
fill(ventana_der(1, :), ventana_der(2, :), 'black');
fill(aspa(1, :), aspa(2, :), 'black');
fill(aspa2(1, :), aspa2(2, :), 'black');
fill(aspa3(1, :), aspa3(2, :), 'black');
fill(aspa4(1, :), aspa4(2, :), 'black');
fill(hierba(1, :), hierba(2, :), 'green');
fill(hierba2(1, :), hierba2(2, :), 'green');

plot(0, 6, '.', 'MarkerSize', 40, 'color', 'black');

ej2.m

Vert = [-1 1 0 1 -1 1 0 1;
0 1 0 -1 0 1 0 -1;
0 0 0 0 4 4 4 4;
1 1 1 1 1 1 1 1];

Caras = [1  2 3 4; 5 6 7 8; 1 2 6 5; 3 4 8 7; 3 2 6 7];

color = ones(6,3);

figure(1);

dibujarEscena(Vert, Caras, color);



P = [1 0 -5];
Pm = [0 0 0];

L = 1;

FOV = 40;

C = camara(P, Pm, L);

Vp = P * C *  Vert;

dim = dimension_ventana(L, FOV);

figure(2);

dibujarPerspectiva(Vp, dim, Caras, color);