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GetRayBoxCells exit normal fix.

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This commit is contained in:
jussi
2024-08-06 14:03:09 +03:00
parent b011b2ca4e
commit 3cb6567bda
3 changed files with 16 additions and 8 deletions
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2
CMakeLists.txt
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@@ -75,6 +75,8 @@ else() # Desktop
if( UNIX )
set( CMAKE_C_COMPILER "gcc" )
# set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall" )
if ( PLATFORM MATCHES "Desktop_SDL" )
include( FindPkgConfig )
pkg_search_module( SDL2 REQUIRED sdl2 )

5
examples/ray_box_cells/main.lua
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@@ -10,8 +10,7 @@ Cam3D = require( "camera3d" )
local monitor = 0
local camera = {}
-- local box = BoundinBox:new( { -8, 0, -8 }, { 16, 16, 16 } )
local box = BoundinBox:new( { -7, 1, -8 }, { 4, 1, 7 } )
local box = BoundinBox:new( { -8, 0, -8 }, { 16, 16, 16 } )
local cellSize = Vector3:new( 1, 1, 1 )
local drawCellSize = cellSize:clone()
local ray = nil
@@ -74,7 +73,7 @@ local function drawSpinner( axis, pos )
local result = 0
local bounds = Rectangle:temp( pos.x, pos.y, 96, 24 )
result, cellSize[ axis ] = RL.GuiSpinner( bounds, axis, cellSize[ axis ], 1, box.max[ axis ], spinnerEdit[ axis ] )
result, cellSize[ axis ] = RL.GuiSpinner( bounds, axis, cellSize[ axis ], 1, 16, spinnerEdit[ axis ] )
if result == 1 then
spinnerEdit[ axis ] = not spinnerEdit[ axis ]

17
src/models.c
View File

@@ -2564,9 +2564,9 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
ray.direction.z == 0.0f ? EPSILON : ray.direction.z;
Vector3 boxSize = Vector3Subtract( box.max, box.min );
Vector3 boxSizeCells = Vector3Ceil( Vector3Divide( boxSize, cellSize ) );
Vector3 cellPos = { -1, -1, -1 };
Vector3 localRayPos = { 0, 0, 0 };
// Vector3 boxSizeCells = Vector3Ceil( Vector3Divide( boxSize, cellSize ) );
Vector3 cellPos = { -1.0f, -1.0f, -1.0f };
Vector3 localRayPos = { 0.0f, 0.0f, 0.0f };
/* If camera is inside the box. */
if ( isInsideBox( ray.position, box ) ) {
@@ -2604,6 +2604,7 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
fabsf( ray.direction.y ),
fabsf( ray.direction.z )
};
/* Relative to cell. */
Vector3 absPos = {
0.0f < signs.x ? localRayPos.x - cellPos.x * cellSize.x : cellSize.x - ( localRayPos.x - cellPos.x * cellSize.x ),
0.0f < signs.y ? localRayPos.y - cellPos.y * cellSize.y : cellSize.y - ( localRayPos.y - cellPos.y * cellSize.y ),
@@ -2623,6 +2624,11 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
};
float exitScale = fmin( fmin( exitDis.x, exitDis.y ), exitDis.z );
Vector3 exitPoint = Vector3Add( Vector3Scale( ray.direction, exitScale ), Vector3Add( localRayPos, box.min ) );
Vector3 exitNormal = {
exitDis.x <= exitDis.y && exitDis.x <= exitDis.z ? -signs.x : 0,
exitDis.y <= exitDis.x && exitDis.y <= exitDis.z ? -signs.y : 0,
exitDis.z <= exitDis.x && exitDis.z <= exitDis.y ? -signs.z : 0
};
Vector3 absCell = { 0, 0, 0 };
int cellId = 2; /* We already added first so we will start at 2. */
@@ -2646,8 +2652,9 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
float rayMoveScale = fmin( fmin( cellDis.x, cellDis.y ), cellDis.z );
absPos = Vector3Add( absPos, Vector3Scale( absDir, rayMoveScale ) );
Vector3 testPos = Vector3AddValue( absPos, EPSILON );
if ( absPos.x < absBounds.x && absPos.y < absBounds.y && absPos.z < absBounds.z ) {
if ( testPos.x < absBounds.x && testPos.y < absBounds.y && testPos.z < absBounds.z ) {
uluaPushVector3( L, (Vector3){ round( cellPos.x ), round( cellPos.y ), round( cellPos.z ) } );
lua_rawseti( L, -2, cellId );
@@ -2658,7 +2665,7 @@ int lmodelsGetRayBoxCells( lua_State* L ) {
.hit = true,
.distance = Vector3Distance( ray.position, exitPoint ),
.point = exitPoint,
.normal = Vector3Multiply( move, Vector3Negate( signs ) )
.normal = exitNormal
} );
return 2;