raytracing/raytracer_challenge
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[FEAT] Finish the Chapter 05 with the render of a sphere shadow.

Browse Source
This commit is contained in:
NADAL Jean-Baptiste
2024-02-14 16:44:13 +01:00
parent d019402756
commit d3fe032c8c
12 changed files with 160 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
apps/CMakeLists.txt
View File

@@ -5,7 +5,6 @@ project(main)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_executable(raytracer main.cpp)
# We need hello.h and the hello library
target_link_libraries(raytracer
PRIVATE raytracing)
add_executable(chapter_05 chapter_05.cpp)
target_link_libraries(chapter_05 PRIVATE raytracing)

91
apps/chapter_05.cpp Normal file
View File

@@ -0,0 +1,91 @@
/*!
* chapter_05.cpp
*
* Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 14/02/2024
*
*/
// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
#include <cstdio>
#include <raytracing.h>
/* ------------------------------------------------------------------------- */
#define kImageSize 100
#define kWallSize 7.0
#define kWallZ 10
using namespace Raytracer;
/* ------------------------------------------------------------------------- */
int shadow_sphere(uint8_t a_canvas_pixels, double a_wall_size, uint8_t a_wall_z)
{
Canvas the_canvas(a_canvas_pixels, a_canvas_pixels);
Color the_color = Color(1, 0, 0); // Red
Sphere the_shape;
Tuple the_ray_origin = Tuple::Point(0, 0, -5);
double the_pixel_size = a_wall_size / a_canvas_pixels;
double the_half = a_wall_size / 2;
double the_world_x, the_world_y;
// For each row of pixels in the canvas
for (int y = 0; y < a_canvas_pixels - 1; y++)
{
// Compute the world y coordinate (top = +half, bottom = -half)
the_world_y = the_half - the_pixel_size * y;
// For each pixel in the row
for (int x = 0; x < a_canvas_pixels; x++)
{
// Compute the world x coordinate (left = -half, right = half)
the_world_x = -the_half + the_pixel_size * x;
// Describe the point on the wall that the ray will target
Tuple the_position = Tuple::Point(the_world_x, the_world_y, a_wall_z);
the_position -= the_ray_origin;
Ray the_ray(the_ray_origin, the_position.normalize());
auto the_xs = the_shape.intersect(the_ray);
auto the_intersec = the_xs.hit();
if (the_intersec.is_defined())
{
the_canvas.write_pixel(x, y, the_color);
}
}
}
the_canvas.save_to_file("chapter05.ppm");
return 0;
}
/* ------------------------------------------------------------------------- */
int main(void)
{
printf("Chapter 05 example.\n");
return shadow_sphere(kImageSize, kWallSize, kWallZ);
}

40
apps/main.cpp
View File

@@ -1,40 +0,0 @@
/*!
* main.cpp
*
* Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 30/01/2024
*
*/
// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
#include <raytracing.h>
#include <cstdio>
/* ------------------------------------------------------------------------- */
int main(void)
{
printf("Later Here we will have main function\n");
return 0;
}