NOTES

General flow

• Parse
• Project
• Draw

Clearing screen performance

Test map 42-custom2.fdf

• Using a while loop for each pixel 400-450 fps
• Using ft_memset 390-440 fps
• Using memset 1800-2100 fps WTFFF??! (colors are incorrect tho because of the 1 byte thing).
• Using a memset32 820-920 pretty good :)

So instead of implementing this and probably facing more endianness related issues, lets just use the while loop. Since this stuff is like 5% percent of the actual performance on bigger maps.

TODO

Features

• Read norm about global static const char arrays.
• Double check if makefile MLX related rules function correctly
• Resize window.
• Min max window size.
• Support multiple projections in an enum that we can pass to the projector.
• Weird color behaviour on linux.
• Gradient on lines
• Save projection angles on number keys.
• Linedrawing optimization
• Black white gradient
• In view_saved just memcopy.
• Don't use jumptable in view select.
• FPS Counter in screen.
• Gradient on height.
• Sidebar.
• Use t_timer in fps_hook(void *param).
• For clearing the screen just memset into the pixel buffer.
• Instead of gnl just read a shit ton of data from the map.
• Spherical projection.
• Add automatic rotate funcion.
• Add screensaver mode (like a dvd player has).
• Switch between gradient for height and gradient for actual map color values.
• Rainbow colors.
• Z-buffer to prevent "When loading t1 for example some lines don't get drawn and seem to dissapear at certain angles".
• Perspective camera.
• Calculate the initial size of the wireframe so it fits perfectly in the window (also do this on resize).
• Mouse dragging to move wireframe.
• Check for newline when counting width.
• Draw square for all the point colors.
• Speed-up big maps.

Issues

• Only draw the pixels that are viewable.
• Segfault when opening a max with scale too large for window. (only on mac)
• Pixels being draw at x = 0.
• Colors in map don't correspond to their hex value on linux.
• Use union for colors to get rid of get_color_x functions.
• Map does weird stuff on spaces see weird_map.fdf
• Segfault when resizing too quick.
• Color union endianness?
• Calculating the gradient in COLOR_MODE_HEIGHT is pretty slow.
• Malloc protection.
• overflow protection in ft_atoi.

Resources

Projection

• https://clintbellanger.net/articles/isometric_math/

• https://en.wikipedia.org/wiki/Rotation_matrix

• https://en.wikipedia.org/wiki/3D_projection

• https://stackoverflow.com/questions/39440390/deforming-plane-mesh-to-sphere

• http://paulbourke.net/geometry/transformationprojection/

Line drawing algorithm

• https://www.middle-engine.com/blog/posts/2020/07/28/bresenhams-line-algorithm

Color union

• https://www.flipcode.com/archives/Using_a_Union_for_Packed_Color_Values.shtml

Faster hypotenuse for color gradient.

• https://stackoverflow.com/questions/3506404/fast-hypotenuse-algorithm-for-embedded-processor

Colors

• https://krazydad.com/tutorials/makecolors.php

Sidenotes

• vaporwave type beat colors c_start.value = 0xff00ffff; c_end.value = 0x00ffffff;