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Formating review to follow raylib code conventions #5298

pull/4578/merge
Ray 1 month ago
parent
79fd6be008
commit
efe62f0e0d
1 changed files with 181 additions and 216 deletions
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  1. +181
    -216
      examples/models/models_decals.c

+ 181
- 216
examples/models/models_decals.c View File

@ -2,7 +2,7 @@
*
* raylib [models] example - decals
*
* Example complexity rating: [★★★☆] 3/4
* Example complexity rating: [★★★★] 4/4
*
* Example originally created with raylib 5.6-dev
*
@ -17,15 +17,19 @@
********************************************************************************************/
#include "raylib.h"
#include "raymath.h"
#include <string.h>
#include <string.h> // Required for: memcpy()
#undef FLT_MAX
#define FLT_MAX 340282346638528859811704183484516925440.0f // Maximum value of a float, from bit pattern 01111111011111111111111111111111
#define MAX_DECALS 256
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
typedef struct MeshBuilder {
int vertexCount;
int vertexCapacity;
@ -33,14 +37,14 @@ typedef struct MeshBuilder {
Vector2 *uvs;
} MeshBuilder;
// Utility functions
kt">void AddTriangleToMeshBuilder(MeshBuilder *mb, Vector3 vertices[3]);
kt">void FreeMeshBuilder(MeshBuilder *mb);
n">Mesh BuildMesh(MeshBuilder *mb);
n">Vector3 ClipSegment(Vector3 v0, Vector3 v1, Vector3 p, float s);
n">Mesh GenMeshDecal(Mesh inputMesh, Ray ray);
//------------------------------------------------------------------------------------
o">// Module Functions Declaration
o">//------------------------------------------------------------------------------------
k">static void AddTriangleToMeshBuilder(MeshBuilder *mb, Vector3 vertices[3]);
static void FreeMeshBuilder(MeshBuilder *mb);
k">static Mesh BuildMesh(MeshBuilder *mb);
static Mesh GenMeshDecal(Mesh inputMesh, Ray ray);
k">static Vector3 ClipSegment(Vector3 v0, Vector3 v1, Vector3 p, float s);
//------------------------------------------------------------------------------------
// Program main entry point
@ -67,11 +71,10 @@ int main(void)
Model model = LoadModel("resources/models/obj/character.obj");
// Apply character skin
Texture2D modelTexture = LoadTexture("resources/models/obj/character_diffuse.png"); // Load model texture
Texture2D modelTexture = LoadTexture("resources/models/obj/character_diffuse.png");
SetTextureFilter(modelTexture, TEXTURE_FILTER_BILINEAR);
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = modelTexture; // Set model diffuse texture
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = modelTexture;
BoundingBox modelBBox = GetMeshBoundingBox(model.meshes[0]); // Get mesh bounding box
camera.target = Vector3Lerp(modelBBox.min, modelBBox.max, 0.5f);
@ -79,14 +82,12 @@ int main(void)
camera.position.x *= 0.1f;
float modelSize = fminf(
fminf(fabsf(modelBBox.max.x - modelBBox.min.x),
fabsf(modelBBox.max.y - modelBBox.min.y)),
fabsf(modelBBox.max.z - modelBBox.min.z)
);
fminf(fabsf(modelBBox.max.x - modelBBox.min.x), fabsf(modelBBox.max.y - modelBBox.min.y)),
fabsf(modelBBox.max.z - modelBBox.min.z));
camera.position = (Vector3){ i">0, modelBBox.max.y * 1.2f, modelSize * 3.0f };
camera.position = (Vector3){ 0.0f, modelBBox.max.y*1.2f, modelSize*3.0f };
float decalSize = modelSize * .25f;
float decalSize = modelSize*0.25f;
float decalOffset = 0.01f;
Model placementCube = LoadModelFromMesh(GenMeshCube(decalSize, decalSize, decalSize));
@ -96,7 +97,7 @@ int main(void)
decalMaterial.maps[0].color = YELLOW;
Image decalImage = LoadImage("resources/raylib_logo.png");
ImageResizeNN(&decalImage, decalImage.width / 4, decalImage.height / 4);
ImageResizeNN(&decalImage, decalImage.width/4, decalImage.height/4);
Texture decalTexture = LoadTextureFromImage(decalImage);
UnloadImage(decalImage);
@ -106,28 +107,23 @@ int main(void)
// We're going to use these to build up our decal meshes
// They'll resize automatically as we go, we'll free them at the end
MeshBuilder mesh_builders[2] = { p">{0}, {0} };
MeshBuilder meshBuilders[2] = { 0 };
bool showModel = true;
Model decalModels[MAX_DECALS] = {0};
Model decalModels[MAX_DECALS] = { 0 };
int decalCount = 0;
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT)) {
UpdateCamera(&camera, CAMERA_THIRD_PERSON);
}
if (IsKeyPressed(KEY_SPACE)) {
showModel = !showModel;
}
if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT)) UpdateCamera(&camera, CAMERA_THIRD_PERSON);
if (IsKeyPressed(KEY_SPACE)) showModel = !showModel;
// Display information about closest hit
RayCollision collision = { 0 };
@ -140,7 +136,7 @@ int main(void)
// Check ray collision against bounding box first, before trying the full ray-mesh test
RayCollision boxHitInfo = GetRayCollisionBox(ray, modelBBox);
if ((boxHitInfo.hit) && decalCount < MAX_DECALS)
if ((boxHitInfo.hit) && p">(decalCount < MAX_DECALS))
{
// Check ray collision against model meshes
RayCollision meshHitInfo = { 0 };
@ -153,52 +149,47 @@ int main(void)
if (meshHitInfo.hit)
{
// Save the closest hit mesh
if (p">(!collision.hit) || (collision.distance > meshHitInfo.distance)) collision = meshHitInfo;
if (!collision.hit || (collision.distance > meshHitInfo.distance)) collision = meshHitInfo;
}
}
if (meshHitInfo.hit)
{
collision = meshHitInfo;
}
if (meshHitInfo.hit) collision = meshHitInfo;
}
// --------------
if (collision.hit && IsMouseButtonPressed(MOUSE_BUTTON_LEFT) && decalCount < MAX_DECALS)
// Add decal to mesh on hit point
if (collision.hit && IsMouseButtonPressed(MOUSE_BUTTON_LEFT) && (decalCount < MAX_DECALS))
{
// Create the transformation to project the decal
Vector3 origin = Vector3Add(collision.point, Vector3Scale(collision.normal, 1.0f));
Matrix splat = MatrixLookAt(collision.point, origin, (Vector3){0,1,0});
Matrix splat = MatrixLookAt(collision.point, origin, (Vector3){ 0.0f, 1.0f, 0.0f });
// Spin the placement around a bit
splat = MatrixMultiply(splat, MatrixRotateZ(DEG2RAD * ((float)GetRandomValue(-180, 180))));
splat = MatrixMultiply(splat, MatrixRotateZ(DEG2RAD*((float)GetRandomValue(-180, 180))));
Matrix splatInv = MatrixInvert(splat);
// Reset the mesh builders
mesh_builders[0].vertexCount = 0;
mesh_builders[1].vertexCount = 0;
meshBuilders[0].vertexCount = 0;
meshBuilders[1].vertexCount = 0;
// We'll be flip-flopping between the two mesh builders
// Reading from one and writing to the other, then swapping
int mb_index = 0;
int mbIndex = 0;
// First pass, just get any triangle inside the bounding box
o">// (for each mesh of the model)
k">for (int meshIndex = 0; meshIndex < model.meshCount; meshIndex++) {
// First pass, just get any triangle inside the bounding box (for each mesh of the model)
k">for (int meshIndex = 0; meshIndex < model.meshCount; meshIndex++)
{
Mesh mesh = model.meshes[meshIndex];
for (int tri = 0; tri < mesh.triangleCount; tri++)
{
Vector3 vertices[3];
Vector3 vertices[3] = { 0 };
// The way we calculate the vertices of the mesh triangle
// depend on whether the mesh vertices are indexed or not
if (mesh.indices == 0)
{
for (int v = 0; v < 3; v++) {
vertices[v] = (Vector3) {
for (int v = 0; v < 3; v++)
{
vertices[v] = (Vector3){
mesh.vertices[3*3*tri + 3*v + 0],
mesh.vertices[3*3*tri + 3*v + 1],
mesh.vertices[3*3*tri + 3*v + 2]
@ -209,7 +200,7 @@ int main(void)
{
for (int v = 0; v < 3; v++)
{
vertices[v] = (Vector3) {
vertices[v] = (Vector3){
mesh.vertices[ 3*mesh.indices[3*tri+0] + v],
mesh.vertices[ 3*mesh.indices[3*tri+1] + v],
mesh.vertices[ 3*mesh.indices[3*tri+2] + v]
@ -225,19 +216,14 @@ int main(void)
// To splat space
Vector3 v = Vector3Transform(vertices[i], splat);
if (fabsf(v.x)<decalSize || fabsf(v.y)<=decalSize || fabsf(v.z)<=decalSize) {
insideCount++;
}
if ((fabsf(v.x) < decalSize) || (fabsf(v.y) <= decalSize) || (fabsf(v.z) <= decalSize)) insideCount++;
// We need to keep the transformed vertex
vertices[i] = v;
}
// If any of them are inside, we add the triangle - we'll clip it later
if (insideCount > 0)
{
AddTriangleToMeshBuilder(&mesh_builders[mb_index], vertices);
}
if (insideCount > 0) AddTriangleToMeshBuilder(&meshBuilders[mbIndex], vertices);
}
}
@ -250,20 +236,21 @@ int main(void)
{ 0, 0, 1 },
{ 0, 0, -1 }
};
for (int face = 0; face < 6; face++)
{
// Swap current model builder (so we read from the one we just wrote to)
mb_index = 1 - mb_index;
mbIndex = 1 - mbIndex;
MeshBuilder *inMesh = &mesh_builders[1-mb_index];
MeshBuilder *outMesh = &mesh_builders[mb_index];
MeshBuilder *inMesh = &meshBuilders[1 - mbIndex];
MeshBuilder *outMesh = &meshBuilders[mbIndex];
// Reset write builder
outMesh->vertexCount = 0;
float s = 0.5f * decalSize;
float s = 0.5f*decalSize;
for (int i = 0; i < inMesh->vertexCount; i+=3)
for (int i = 0; i < inMesh->vertexCount; i += 3)
{
Vector3 nV1, nV2, nV3, nV4;
@ -271,100 +258,101 @@ int main(void)
float d2 = Vector3DotProduct(inMesh->vertices[ i + 1 ], planes[face] ) - s;
float d3 = Vector3DotProduct(inMesh->vertices[ i + 2 ], planes[face] ) - s;
int v1Out = d1 > 0;
int v2Out = d2 > 0;
int v3Out = d3 > 0;
int v1Out = p">(d1 > 0);
int v2Out = p">(d2 > 0);
int v3Out = p">(d3 > 0);
// calculate, how many vertices of the face lie outside of the clipping plane
// Calculate, how many vertices of the face lie outside of the clipping plane
int total = v1Out + v2Out + v3Out;
switch ( total ) {
case 0: {
// the entire face lies inside of the plane, no clipping needed
switch (total)
{
case 0:
{
// The entire face lies inside of the plane, no clipping needed
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){inMesh->vertices[i], inMesh->vertices[i+1], inMesh->vertices[i+2]});
break;
}
case 1: {
// one vertex lies outside of the plane, perform clipping
if (v1Out) {
nV1 = inMesh->vertices[ i + 1 ];
nV2 = inMesh->vertices[ i + 2 ];
nV3 = ClipSegment( inMesh->vertices[ i ], nV1, planes[face], s );
nV4 = ClipSegment( inMesh->vertices[ i ], nV2, planes[face], s );
} break;
case 1:
{
// One vertex lies outside of the plane, perform clipping
if (v1Out)
{
nV1 = inMesh->vertices[i + 1];
nV2 = inMesh->vertices[i + 2];
nV3 = ClipSegment(inMesh->vertices[i], nV1, planes[face], s);
nV4 = ClipSegment(inMesh->vertices[i], nV2, planes[face], s);
}
if (v2Out) {
nV1 = inMesh->vertices[ i ];
nV2 = inMesh->vertices[ i + 2 ];
nV3 = ClipSegment( inMesh->vertices[ i + 1 ], nV1, planes[face], s );
nV4 = ClipSegment( inMesh->vertices[ i + 1 ], nV2, planes[face], s );
if (v2Out)
{
nV1 = inMesh->vertices[i];
nV2 = inMesh->vertices[i + 2];
nV3 = ClipSegment(inMesh->vertices[i + 1], nV1, planes[face], s);
nV4 = ClipSegment(inMesh->vertices[i + 1], nV2, planes[face], s);
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV3, nV2, nV1});
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV2, nV3, nV4});
break;
}
if (v3Out) {
nV1 = inMesh->vertices[ i ];
nV2 = inMesh->vertices[ i + 1 ];
nV3 = ClipSegment( inMesh->vertices[ i + 2 ], nV1, planes[face], s );
nV4 = ClipSegment( inMesh->vertices[ i + 2 ], nV2, planes[face], s );
if (v3Out)
{
nV1 = inMesh->vertices[i];
nV2 = inMesh->vertices[i + 1];
nV3 = ClipSegment(inMesh->vertices[i + 2], nV1, planes[face], s);
nV4 = ClipSegment(inMesh->vertices[i + 2], nV2, planes[face], s);
}
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV1, nV2, nV3});
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV4, nV3, nV2});
break;
}
case 2: {
// two vertices lies outside of the plane, perform clipping
if (!v1Out) {
nV1 = inMesh->vertices[ i ];
nV2 = ClipSegment( nV1, inMesh->vertices[ i + 1 ], planes[face], s );
nV3 = ClipSegment( nV1, inMesh->vertices[ i + 2 ], planes[face], s );
} break;
case 2:
{
// Two vertices lies outside of the plane, perform clipping
if (!v1Out)
{
nV1 = inMesh->vertices[i];
nV2 = ClipSegment(nV1, inMesh->vertices[i + 1], planes[face], s);
nV3 = ClipSegment(nV1, inMesh->vertices[i + 2], planes[face], s);
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV1, nV2, nV3});
}
if (!v2Out) {
nV1 = inMesh->vertices[ i + 1 ];
nV2 = ClipSegment( nV1, inMesh->vertices[ i + 2 ], planes[face], s );
nV3 = ClipSegment( nV1, inMesh->vertices[ i ], planes[face], s );
if (!v2Out)
{
nV1 = inMesh->vertices[i + 1];
nV2 = ClipSegment(nV1, inMesh->vertices[i + 2], planes[face], s);
nV3 = ClipSegment(nV1, inMesh->vertices[i], planes[face], s);
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV1, nV2, nV3});
}
if (!v3Out) {
nV1 = inMesh->vertices[ i + 2 ];
nV2 = ClipSegment( nV1, inMesh->vertices[ i ], planes[face], s );
nV3 = ClipSegment( nV1, inMesh->vertices[ i + 1 ], planes[face], s );
if (!v3Out)
{
nV1 = inMesh->vertices[i + 2];
nV2 = ClipSegment(nV1, inMesh->vertices[i], planes[face], s);
nV3 = ClipSegment(nV1, inMesh->vertices[i + 1], planes[face], s);
AddTriangleToMeshBuilder(outMesh, (Vector3[3]){nV1, nV2, nV3});
}
break;
}
case 3: {
// the entire face lies outside of the plane, so let's discard the corresponding vertices
break;
}
} break;
case 3: // The entire face lies outside of the plane, so let's discard the corresponding vertices
default: break;
}
}
}
// Now we just need to re-transform the vertices
MeshBuilder *theMesh = &mesh_builders[mb_index];
MeshBuilder *theMesh = &meshBuilders[mbIndex];
// Allocate room for UVs
if (theMesh->vertexCount > 0)
{
theMesh->uvs = (Vector2*)MemAlloc(sizeof(Vector2)*theMesh->vertexCount);
theMesh->uvs = (Vector2 *)MemAlloc(sizeof(Vector2)*theMesh->vertexCount);
for (int i = 0; i < theMesh->vertexCount; i++)
{
// Calculate the UVs based on the projected coords
// They are clipped to (-decalSize .. decalSize) and we want them (0..1)
theMesh->uvs[i].x = (theMesh->vertices[i].x / decalSize + .5f);
theMesh->uvs[i].y = (theMesh->vertices[i].y / decalSize + .5f);
theMesh->uvs[i].x = (theMesh->vertices[i].x/decalSize + 0.5f);
theMesh->uvs[i].y = (theMesh->vertices[i].y/decalSize + 0.5f);
// From splat space to world space
theMesh->vertices[i] = Vector3Transform(theMesh->vertices[i], splatInv);
@ -378,89 +366,73 @@ int main(void)
decalModels[decalIndex] = LoadModelFromMesh(BuildMesh(theMesh));
decalModels[decalIndex].materials[0] = decalMaterial;
}
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginMode3D(camera);
// Draw the model at the origin and default scale
if (showModel)
{
DrawModel(model, (Vector3){0.0f, 0.0f, 0.0f}, 1.0f, WHITE);
}
if (showModel) DrawModel(model, (Vector3){0.0f, 0.0f, 0.0f}, 1.0f, WHITE);
// Draw the decal models
for (int i = 0; i < decalCount; i++)
{
DrawModel(decalModels[i], (Vector3){0}, 1.0f, WHITE);
}
for (int i = 0; i < decalCount; i++) DrawModel(decalModels[i], (Vector3){0}, 1.0f, WHITE);
// If we hit the mesh, draw the box for the decal
if (collision.hit)
{
Vector3 origin = Vector3Add(collision.point, Vector3Scale(collision.normal, 1.0f));
Matrix splat = MatrixLookAt(collision.point, origin, (Vector3){0,1,0});
placementCube.transform = MatrixInvert(splat);
DrawModel(placementCube, (Vector3){0}, 1.0f, Fade(WHITE, 0.5f));
}
DrawGrid(10, 10.0f);
EndMode3D();
float yPos = 10;
float x0 = GetScreenWidth() - 300;
float x1 = x0 + 100;
float x2 = x1 + 100;
DrawText("Vertices", x1, yPos, 10, LIME);
DrawText("Triangles", x2, yPos, 10, LIME);
yPos += 15;
int vertexCount = 0;
int triangleCount = 0;
for (int i = 0; i < model.meshCount; i++)
{
float yPos = 10;
float x0 = GetScreenWidth() - 300;
float x1 = x0 + 100;
float x2 = x1 + 100;
DrawText("Vertices", x1, yPos, 10, LIME);
DrawText("Triangles", x2, yPos, 10, LIME);
yPos += 15;
int vertexCount = 0;
int triangleCount = 0;
for (int i = 0; i < model.meshCount; i++)
{
vertexCount += model.meshes[i].vertexCount;
triangleCount += model.meshes[i].triangleCount;
}
DrawText("Main model", x0, yPos, 10, LIME);
DrawText(TextFormat("%d", vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", triangleCount), x2, yPos, 10, LIME);
yPos += 15;
for (int i = 0; i < decalCount; i++)
{
DrawText(TextFormat("Decal #%d", i+1), x0, yPos, 10, LIME);
DrawText(TextFormat("%d", decalModels[i].meshes[0].vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", decalModels[i].meshes[0].triangleCount), x2, yPos, 10, LIME);
vertexCount += decalModels[i].meshes[0].vertexCount;
triangleCount += decalModels[i].meshes[0].triangleCount;
yPos += 15;
}
vertexCount += model.meshes[i].vertexCount;
triangleCount += model.meshes[i].triangleCount;
}
DrawText("Main model", x0, yPos, 10, LIME);
DrawText(TextFormat("%d", vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", triangleCount), x2, yPos, 10, LIME);
yPos += 15;
for (int i = 0; i < decalCount; i++)
{
DrawText(TextFormat("Decal #%d", i+1), x0, yPos, 10, LIME);
DrawText(TextFormat("%d", decalModels[i].meshes[0].vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", decalModels[i].meshes[0].triangleCount), x2, yPos, 10, LIME);
DrawText("TOTAL", x0, yPos, 10, LIME);
DrawText(TextFormat("%d", vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", triangleCount), x2, yPos, 10, LIME);
vertexCount += decalModels[i].meshes[0].vertexCount;
triangleCount += decalModels[i].meshes[0].triangleCount;
yPos += 15;
}
DrawText("TOTAL", x0, yPos, 10, LIME);
DrawText(TextFormat("%d", vertexCount), x1, yPos, 10, LIME);
DrawText(TextFormat("%d", triangleCount), x2, yPos, 10, LIME);
yPos += 15;
DrawText("Hold RMB to move camera", 10, 430, 10, GRAY);
DrawText("(c) Character model and texture from kenney.nl", screenWidth - 260, screenHeight - 20, 10, GRAY);
DrawFPS(10, 10);
@ -474,15 +446,13 @@ int main(void)
UnloadModel(model);
UnloadTexture(modelTexture);
for (int i = 0; i < decalCount; i++)
{
UnloadModel(decalModels[i]);
}
// TODO: WARNING: This line crashes program on closing
//for (int i = 0; i < decalCount; i++) UnloadModel(decalModels[i]);
UnloadTexture(decalTexture);
FreeMeshBuilder(&mesh_builders[0]);
FreeMeshBuilder(&mesh_builders[1]);
FreeMeshBuilder(&meshBuilders[0]);
FreeMeshBuilder(&meshBuilders[1]);
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
@ -490,18 +460,24 @@ int main(void)
return 0;
}
// A really simple dynamic array manager
void AddTriangleToMeshBuilder(MeshBuilder *mb, Vector3 vertices[3]) {
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
// Add triangles to mesh builder (dynamic array manager)
static void AddTriangleToMeshBuilder(MeshBuilder *mb, Vector3 vertices[3])
{
// Reallocate and copy if we need to
if (mb->vertexCapacity <= mb->vertexCount + 3 )
if (mb->vertexCapacity <= p">(mb->vertexCount + 3 class="p">))
{
int newVertexCapacity = (1 + (mb->vertexCapacity / 256)) * 256;
Vector3 *newVertices = (Vector3*)MemAlloc(newVertexCapacity * sizeof(Vector3));
int newVertexCapacity = (1 + (mb->vertexCapacity/256))*256;
Vector3 *newVertices = (Vector3 *)MemAlloc(newVertexCapacity*sizeof(Vector3));
if (mb->vertexCapacity > 0)
{
memcpy(newVertices, mb->vertices, mb->vertexCount * sizeof(Vector3));
memcpy(newVertices, mb->vertices, mb->vertexCount*sizeof(Vector3));
MemFree(mb->vertices);
}
mb->vertices = newVertices;
mb->vertexCapacity = newVertexCapacity;
}
@ -510,44 +486,33 @@ void AddTriangleToMeshBuilder(MeshBuilder *mb, Vector3 vertices[3]) {
int index = mb->vertexCount;
mb->vertexCount += 3;
for (int i = 0; i < 3; i++)
{
mb->vertices[index+i] = vertices[i];
}
for (int i = 0; i < 3; i++) mb->vertices[index+i] = vertices[i];
}
void FreeMeshBuilder(MeshBuilder *mb)
// Free mesh builder
static void FreeMeshBuilder(MeshBuilder *mb)
{
MemFree(mb->vertices);
if (mb->uvs)
{
MemFree(mb->uvs);
}
if (mb->uvs) MemFree(mb->uvs);
*mb = (MeshBuilder){ 0 };
}
// Construct a Raylib Mesh from our MeshBuilder data
Mesh BuildMesh(MeshBuilder *mb)
// Build a Mesh from MeshBuilder data
static Mesh BuildMesh(MeshBuilder *mb)
{
Mesh outMesh = { 0 };
outMesh.vertexCount = mb->vertexCount;
outMesh.triangleCount = mb->vertexCount / 3;
outMesh.vertices = MemAlloc(outMesh.vertexCount * 3 * sizeof(float));
if (mb->uvs)
{
outMesh.texcoords = MemAlloc(outMesh.vertexCount * 2 * sizeof(float));
}
outMesh.triangleCount = mb->vertexCount/3;
outMesh.vertices = MemAlloc(outMesh.vertexCount*3*sizeof(float));
if (mb->uvs) outMesh.texcoords = MemAlloc(outMesh.vertexCount*2*sizeof(float));
for (int i = 0; i < mb->vertexCount; i++)
{
outMesh.vertices[3*i+0] = mb->vertices[i].x;
outMesh.vertices[3*i+1] = mb->vertices[i].y;
outMesh.vertices[3*i+2] = mb->vertices[i].z;
if (mb->uvs)
{
outMesh.texcoords[2*i+0] = mb->uvs[i].x;
@ -560,14 +525,14 @@ Mesh BuildMesh(MeshBuilder *mb)
return outMesh;
}
Vector3 ClipSegment(Vector3 v0, Vector3 v1, Vector3 p, float s)
// Clip segment
static Vector3 ClipSegment(Vector3 v0, Vector3 v1, Vector3 p, float s)
{
float d0 = Vector3DotProduct(v0, p) - s;
float d1 = Vector3DotProduct(v1, p) - s;
float s0 = d0 / ( d0 - d1 );
float s0 = d0/(d0 - d1);
Vector3 position = Vector3Lerp(v0, v1, s0);
return position;
}
}

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