-/* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
+/* Copyright (C) 2021-2024 Harry Godden (hgn) - All Rights Reserved */
-#ifndef VG_LINES_H
-#define VG_LINES_H
-
-#define VG_GAME
-#include "vg/vg.h"
+#pragma once
+#include "vg_platform.h"
+#include "vg_engine.h"
typedef v3f line_co;
#define VG__CYAN 0xffffff00
#define VG__NONE 0x00000000
-static struct vg_shader _shader_lines = {
- .name = "[vg] lines",
- .link = NULL,
- .vs = {
- .orig_file = NULL,
- .static_src =
-
- "uniform mat4 uPv;"
- "layout (location=0) in vec3 a_co;"
- "layout (location=1) in vec4 a_colour;"
- ""
- "out vec4 s_colour;"
- ""
- "void main()"
- "{"
- " vec4 vert_pos = uPv * vec4( a_co, 1.0 );"
- " s_colour = a_colour;"
- " gl_Position = vert_pos;"
- "}"
- },
- .fs = {
- .orig_file = NULL,
- .static_src =
-
- "out vec4 FragColor;"
- ""
- "in vec4 s_colour;"
- ""
- "void main()"
- "{"
- " FragColor = s_colour;"
- "}"
- }
-};
-
-struct{
- u32 draw,
- allow_input;
+struct vg_lines
+{
+ u32 enabled,
+ render;
struct vg_lines_vert{
v3f co;
GLuint vao, vbo;
}
-static vg_lines;
-
-VG_STATIC void async_vg_lines_init( void *payload, u32 payload_size )
-{
- glGenVertexArrays( 1, &vg_lines.vao );
- glGenBuffers( 1, &vg_lines.vbo );
- glBindVertexArray( vg_lines.vao );
- glBindBuffer( GL_ARRAY_BUFFER, vg_lines.vbo );
-
- u32 size = 50000 * sizeof( struct vg_lines_vert );
-
- vg_lines.vertex_buffer =
- vg_create_linear_allocator(vg_mem.rtmemory, size, VG_MEMORY_REALTIME);
-
- glBufferData( GL_ARRAY_BUFFER, size, NULL, GL_DYNAMIC_DRAW );
- glBindVertexArray( vg_lines.vao );
- VG_CHECK_GL_ERR();
-
- /* Pointers */
- glVertexAttribPointer(
- 0,
- 3,
- GL_FLOAT,
- GL_FALSE,
- sizeof( struct vg_lines_vert ),
- (void *)0
- );
- glEnableVertexAttribArray( 0 );
-
- glVertexAttribPointer(
- 1,
- 4,
- GL_UNSIGNED_BYTE,
- GL_TRUE,
- sizeof( struct vg_lines_vert ),
- (void*)(offsetof( struct vg_lines_vert, colour ))
- );
- glEnableVertexAttribArray( 1 );
-
- VG_CHECK_GL_ERR();
- vg_success( "done\n" );
-
- vg_lines.allow_input = 1;
-}
-
-VG_STATIC void vg_lines_init(void)
-{
- vg_async_call( async_vg_lines_init, NULL, 0 );
-
- vg_console_reg_var( "vg_lines", &vg_lines.draw, k_var_dtype_i32,
- VG_VAR_CHEAT );
- vg_shader_register( &_shader_lines );
-
-}
-
-VG_STATIC void vg_lines_drawall( void )
-{
- glUseProgram( _shader_lines.id );
-
- glUniformMatrix4fv( glGetUniformLocation( _shader_lines.id, "uPv" ),
- 1, GL_FALSE, (float *)vg.pv );
-
- glBindVertexArray( vg_lines.vao );
- glBindBuffer( GL_ARRAY_BUFFER, vg_lines.vbo );
-
- u32 bufusage = vg_linear_get_cur(vg_lines.vertex_buffer);
-
- glBufferSubData( GL_ARRAY_BUFFER, 0, bufusage, vg_lines.vertex_buffer );
-
- glEnable( GL_BLEND );
- glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
- glBlendEquation( GL_FUNC_ADD );
-
- if( vg_lines.draw )
- glDrawArrays( GL_LINES, 0, bufusage / sizeof(struct vg_lines_vert) );
-
- glDisable( GL_BLEND );
- vg_linear_clear( vg_lines.vertex_buffer );
-}
-
-VG_STATIC void vg_line2( line_co from, line_co to, u32 fc, u32 tc )
-{
- if( !vg_lines.allow_input )
- return;
-
- u32 size = 2 * sizeof(struct vg_lines_vert);
- struct vg_lines_vert *v = vg_linear_alloc( vg_lines.vertex_buffer, size );
-
- v3_copy( from, v[0].co );
- v3_copy( to, v[1].co );
-
- v[0].colour = fc;
- v[1].colour = tc;
-}
-
-VG_STATIC void vg_line( line_co from, line_co to, u32 colour )
-{
- vg_line2( from, to, colour, colour );
-}
-
-VG_STATIC void line_tangent_basis( v3f n, v3f tx, v3f ty )
-{
- /* Compute tangent basis (box2d) */
- if( fabsf( n[0] ) >= 0.57735027f ){
- tx[0] = n[1];
- tx[1] = -n[0];
- tx[2] = 0.0f;
- }
- else{
- tx[0] = 0.0f;
- tx[1] = n[2];
- tx[2] = -n[1];
- }
-
- v3_normalize( tx );
- v3_cross( n, tx, ty );
-}
-
-VG_STATIC void vg_line_arrow( line_co co, line_co dir, float size, u32 colour )
-{
- v3f p1, tx, ty, p2, p3;
- v3_muladds( co, dir, size, p1 );
- line_tangent_basis( dir, tx, ty );
-
- v3_muladds( p1, dir, -size * 0.125f, p2 );
- v3_muladds( p2, ty, size * 0.125f, p3 );
- v3_muladds( p2, ty, -size * 0.125f, p2 );
-
- vg_line( co, p1, colour );
- vg_line( p1, p2, colour );
- vg_line( p1, p3, colour );
-}
-
-VG_STATIC void vg_line_boxf( boxf box, u32 colour )
-{
- v3f p000, p001, p010, p011, p100, p101, p110, p111;
-
- p000[0]=box[0][0];p000[1]=box[0][1];p000[2]=box[0][2];
- p001[0]=box[0][0];p001[1]=box[0][1];p001[2]=box[1][2];
- p010[0]=box[0][0];p010[1]=box[1][1];p010[2]=box[0][2];
- p011[0]=box[0][0];p011[1]=box[1][1];p011[2]=box[1][2];
-
- p100[0]=box[1][0];p100[1]=box[0][1];p100[2]=box[0][2];
- p101[0]=box[1][0];p101[1]=box[0][1];p101[2]=box[1][2];
- p110[0]=box[1][0];p110[1]=box[1][1];p110[2]=box[0][2];
- p111[0]=box[1][0];p111[1]=box[1][1];p111[2]=box[1][2];
-
- vg_line( p000, p001, colour );
- vg_line( p001, p011, colour );
- vg_line( p011, p010, colour );
- vg_line( p010, p000, colour );
-
- vg_line( p100, p101, colour );
- vg_line( p101, p111, colour );
- vg_line( p111, p110, colour );
- vg_line( p110, p100, colour );
-
- vg_line( p100, p000, colour );
- vg_line( p101, p001, colour );
- vg_line( p110, p010, colour );
- vg_line( p111, p011, colour );
-}
-
-VG_STATIC void vg_line_boxf_transformed( m4x3f m, boxf box, u32 colour )
-{
- v3f p000, p001, p010, p011, p100, p101, p110, p111;
-
- p000[0]=box[0][0];p000[1]=box[0][1];p000[2]=box[0][2];
- p001[0]=box[0][0];p001[1]=box[0][1];p001[2]=box[1][2];
- p010[0]=box[0][0];p010[1]=box[1][1];p010[2]=box[0][2];
- p011[0]=box[0][0];p011[1]=box[1][1];p011[2]=box[1][2];
-
- p100[0]=box[1][0];p100[1]=box[0][1];p100[2]=box[0][2];
- p101[0]=box[1][0];p101[1]=box[0][1];p101[2]=box[1][2];
- p110[0]=box[1][0];p110[1]=box[1][1];p110[2]=box[0][2];
- p111[0]=box[1][0];p111[1]=box[1][1];p111[2]=box[1][2];
-
- m4x3_mulv( m, p000, p000 );
- m4x3_mulv( m, p001, p001 );
- m4x3_mulv( m, p010, p010 );
- m4x3_mulv( m, p011, p011 );
- m4x3_mulv( m, p100, p100 );
- m4x3_mulv( m, p101, p101 );
- m4x3_mulv( m, p110, p110 );
- m4x3_mulv( m, p111, p111 );
-
- vg_line( p000, p001, colour );
- vg_line( p001, p011, colour );
- vg_line( p011, p010, colour );
- vg_line( p010, p000, colour );
-
- vg_line( p100, p101, colour );
- vg_line( p101, p111, colour );
- vg_line( p111, p110, colour );
- vg_line( p110, p100, colour );
-
- vg_line( p100, p000, colour );
- vg_line( p101, p001, colour );
- vg_line( p110, p010, colour );
- vg_line( p111, p011, colour );
-
- vg_line( p000, p110, colour );
- vg_line( p100, p010, colour );
-}
-
-VG_STATIC void vg_line_cross(v3f pos,u32 colour, float scale)
-{
- v3f p0, p1;
- v3_add( (v3f){ scale,0.0f,0.0f}, pos, p0 );
- v3_add( (v3f){-scale,0.0f,0.0f}, pos, p1 );
- vg_line( p0, p1, colour );
- v3_add( (v3f){0.0f, scale,0.0f}, pos, p0 );
- v3_add( (v3f){0.0f,-scale,0.0f}, pos, p1 );
- vg_line( p0, p1, colour );
- v3_add( (v3f){0.0f,0.0f, scale}, pos, p0 );
- v3_add( (v3f){0.0f,0.0f,-scale}, pos, p1 );
- vg_line( p0, p1, colour );
-}
-
-VG_STATIC void vg_line_pt3( v3f pt, float size, u32 colour )
-{
- boxf box =
- {
- { pt[0]-size, pt[1]-size, pt[2]-size },
- { pt[0]+size, pt[1]+size, pt[2]+size }
- };
-
- vg_line_boxf( box, colour );
-}
-
-#endif /* VG_LINES_H */
+extern vg_lines;
+
+void vg_line_capsule( m4x3f m, float radius, float h, u32 colour );
+void vg_line_sphere( m4x3f m, float radius, u32 colour );
+void vg_line_point( v3f pt, float size, u32 colour );
+void vg_line_boxf_transformed( m4x3f m, boxf box, u32 colour );
+void vg_line_boxf( boxf box, u32 colour );
+void vg_line_mesh( v3f verts[], u32 indices[][2], u32 indice_count,u32 colour );
+void vg_line_box_verts( boxf box, v3f verts[8] );
+void vg_line_cross(v3f pos,u32 colour, float scale);
+void vg_line_arrow( line_co co, line_co dir, float size, u32 colour );
+void vg_line( line_co from, line_co to, u32 colour );
+void vg_line2( line_co from, line_co to, u32 fc, u32 tc );
+void vg_lines_drawall( void );
+void vg_lines_init(void);
projects / vg.git / blobdiff