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la funcion calc_normal ahora toma vectores R4 via alg. G-S

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2024-10-18 18:35:21 -06:00
parent 03d446cdaf
commit e79c4abe83
1 changed files with 30 additions and 6 deletions
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36
src/main.c
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@@ -18,15 +18,39 @@ unsigned char palette[] =
0x7A,0x1C,0xAC,0xff, 0x7A,0x1C,0xAC,0xff,
}; };
void calc_normal(float* v1, float* v2, float* v3, float* normal) void calc_normal(float* v1, float* v2, float* v3, , float* v4 ,float* normal, unsigned char n)
{ {
vec3 lado1, lado2; vec4 lado1, lado2;
vec4 u1, u2;
switch (n)
{
case 3:
glm_vec3_sub(v2, v1, lado1); glm_vec3_sub(v2, v1, lado1);
glm_vec3_sub(v3, v1, lado2); glm_vec3_sub(v3, v1, lado2);
glm_vec3_cross(lado1, lado2, normal); glm_vec3_cross(lado1, lado2, normal);
glm_vec3_normalize(normal); glm_vec3_normalize(normal);
return;
case 4:
glm_vec4_sub(v2, v1, lado1);
glm_vec4_sub(v3, v1, lado2);
glm_vec4_copy(lado1, u1);
float alfa = glm_vec4_dot(lado2, u1) / glm_vec4_dot(u1, u1);
vec4 proy;
glm_vec4_scale(u1, alfa, proy);
glm_vec4_sub(lado2, proy, u2);
glm_vec4_normalize(u2);
glm_vec4_copy(u2, normal);
default:
break;
}
} }
float * fill_normal( float * d ) float * fill_normal( float * d )