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Final: Illumination

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This commit is contained in:
PedroEdiaz
2024-10-17 22:24:54 -06:00
parent 5fc19db1a9
commit 9dabea34d2
9 changed files with 65 additions and 80 deletions
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3
src/context.c
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@@ -4,6 +4,9 @@
void set_clean_color_context( unsigned char r, unsigned char g, unsigned char b )
{
glEnable( GL_DEPTH_TEST );
glEnable( GL_CULL_FACE );
glCullFace( GL_BACK );
glClearColor( (float)r/0xff, (float)g/0xff, (float)b/0xff, 1.0 );
}

32
src/data/axis.h
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@@ -7,39 +7,35 @@
#undef G
#undef H
const float X = 2.0;
const float Y = 0.05;
const float Z = 0.05;
#define A -X,-Y,-Z,
#define B -X,-Y, Z,
#define C -X, Y,-Z,
#define D -X, Y, Z,
#define E X,-Y,-Z,
#define F X,-Y, Z,
#define G X, Y,-Z,
#define H X, Y, Z,
#define A -2.0,-0.05,-0.05,
#define B -2.0,-0.05, 0.05,
#define C -2.0, 0.05,-0.05,
#define D -2.0, 0.05, 0.05,
#define E 2.0,-0.05,-0.05,
#define F 2.0,-0.05, 0.05,
#define G 2.0, 0.05,-0.05,
#define H 2.0, 0.05, 0.05,
narray_float_t d_axis =
{
3*3*2*6,
A C E
C E G
G E D
E G F
G F H
H F G
F H B
H B D
D B H
B D A
D A C
C A D
C D G
D G H
H G D
A B E
E B A
B E F
};

34
src/data/cube.h
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@@ -1,5 +1,3 @@
#include <cglm/cglm.h>
#define A -1,-1,-1,
#define B -1,-1, 1,
#define C -1, 1,-1,
@@ -9,43 +7,25 @@
#define G 1, 1,-1,
#define H 1, 1, 1,
narray_float_t d_cube =
float d_cube[] =
{
3*3*2*6,
A C E
C E G
G E C
E G F
G F H
H F G
F H B
H B D
D B H
B D A
D A C
C A D
C D G
D G H
H G D
A B E
E B A
B E F
A C E
C E G
E G F
G F H
F H B
H B D
B D A
D A C
C D G
D G H
A B E
B E F
};

8
src/data/shaders.h
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@@ -37,14 +37,12 @@ const char * fs =
"{"
" vec4 color = texture( palette, vec3( 0, 0, index ) ).rgba;"
" vec3 lightColor = vec3(1,1,1);"
" vec3 lightPos = vec3(0,000,-15);"
" vec3 lightPos = vec3(0,0,-15);"
" vec3 lightDir = normalize(lightPos - FragPos);"
" vec3 norm = normalize(Normal);"
" float diffuse = max(dot(norm, lightDir), 0.0);"
" float diffuse = max(dot(Normal, lightDir), 0.0);"
" float ambient = 0.5;"
" FragColor = vec4((ambient + diffuse)*lightColor,1.0)*color;"
" FragColor = (ambient + diffuse)*color;"
"}";

24
src/main.c
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@@ -3,7 +3,9 @@
#include "data/axis.h"
#include "data/shaders.h"
#include <GL/glew.h>
#include <stdlib.h>
#include <cglm/vec3.h>
#define WIDTH 512
#define HEIGHT 512
@@ -27,9 +29,11 @@ void calc_normal(float* v1, float* v2, float* v3, float* normal)
glm_vec3_normalize(normal);
}
void fill_normal( float * d, float * n )
float * fill_normal( float * d )
{
//*n = *d;
float * n;
n = malloc( (*d+1)*sizeof(float));
*n = *d;
for (int i = 0; i < *d; i += 9)
{
@@ -39,12 +43,14 @@ void fill_normal( float * d, float * n )
glm_vec3_copy( norm_vec, (n+1)+i+3 );
glm_vec3_copy( norm_vec, (n+1)+i+6 );
}
return n;
}
const char * wname = "manigraph: manifold grapher";
int main( void )
{
float * n_cube, *n_axis;
id_t shader, texture;
mesh_t m_cube, m_axis;
window_t window;
@@ -57,8 +63,6 @@ int main( void )
glewInit();
fill_normal( d_cube, d_cube+(int)*d_cube);
if( !( shader = create_shader() ) )
goto error_shader;
@@ -68,12 +72,18 @@ int main( void )
load_fix_matrix( shader, (float)WIDTH/HEIGHT );
if( !( m_cube = create_mesh( d_cube ) ) )
n_cube = fill_normal( d_cube );
n_axis = fill_normal( d_axis );
if( !( m_cube = create_mesh( d_cube, n_cube ) ) )
goto error_mesh_cube;
if( !( m_axis = create_mesh( d_axis ) ) )
if( !( m_axis = create_mesh( d_axis, n_axis ) ) )
goto error_mesh_axis;
free( n_cube );
free( n_axis );
texture=create_palette_texture( palette );
use_texture( texture );

2
src/main.h
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@@ -23,7 +23,7 @@ int is_open_window(window_t window);
void close_window(window_t window);
mesh_t create_mesh(narray_float_t mesh);
mesh_t create_mesh( float * d, float * n);
void destroy_mesh(mesh_t p);

4
src/matrix.c
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@@ -13,14 +13,14 @@ mat4 ortho[] =
},
{
{ 0, 1, 0, 0 },
{ 1, 0, 0, 0 },
{-1, 0, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 },
},
{
{ 0, 0, 1, 0 },
{ 0, 1, 0, 0 },
{ 1, 0, 0, 0 },
{-1, 0, 0, 0 },
{ 0, 0, 0, 1 },
},
};

28
src/mesh.c
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@@ -4,10 +4,10 @@
struct obj
{
unsigned int vertex, n_vao, d_vao, n_vbo, d_vbo;
unsigned int vertex, vao, n_vbo, d_vbo;
};
mesh_t create_mesh( narray_float_t d )
mesh_t create_mesh( float * d, float * n )
{
struct obj * p;
@@ -15,24 +15,23 @@ mesh_t create_mesh( narray_float_t d )
p->vertex=(*d)/3;
glGenVertexArrays( 1, &p->n_vao );
glGenVertexArrays( 1, &p->d_vao );
glGenVertexArrays( 1, &p->vao );
glGenBuffers( 1, &p->d_vbo );
glGenBuffers( 1, &p->n_vbo );
glBindVertexArray( p->d_vao );
glBindVertexArray( p->vao );
glBindBuffer( GL_ARRAY_BUFFER, p->d_vbo );
glBufferData( GL_ARRAY_BUFFER, 2*(p->vertex*3)*sizeof(float), d+1,
glBufferData( GL_ARRAY_BUFFER, p->vertex*3*sizeof(float), d+1,
GL_STATIC_DRAW );
glVertexAttribPointer( 0,3,GL_FLOAT, 0, 3*sizeof(float), NULL );
glEnableVertexAttribArray(0);
glVertexAttribPointer( 1,3,GL_FLOAT, *d, 3*sizeof(float), NULL );
glGenBuffers( 1, &p->n_vbo );
glBindBuffer( GL_ARRAY_BUFFER, p->n_vbo );
glBufferData( GL_ARRAY_BUFFER, p->vertex*3*sizeof(float), n+1,
GL_STATIC_DRAW );
glVertexAttribPointer( 1,3,GL_FLOAT, 0, 3*sizeof(float), NULL );
glEnableVertexAttribArray(1);
return p;
}
@@ -40,8 +39,7 @@ void destroy_mesh( mesh_t p )
{
struct obj * obj ;
obj = p;
glDeleteVertexArrays( 1, &obj->d_vao );
glDeleteVertexArrays( 1, &obj->n_vao );
glDeleteVertexArrays( 1, &obj->vao );
glDeleteBuffers( 1, &obj->d_vbo );
glDeleteBuffers( 1, &obj->n_vbo );
free( p );
@@ -51,7 +49,7 @@ void draw_mesh( mesh_t p )
{
struct obj * obj=p;
glBindVertexArray( obj->d_vao );
glBindVertexArray( obj->vao );
#ifdef DEBUG
{
int i;