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fix grid generation code

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This commit is contained in:
Irlan
2018-04-03 23:31:59 -03:00
parent 3c84b8f8f4
commit 2b764021ff
1 changed files with 24 additions and 13 deletions
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37
examples/testbed/framework/test.cpp
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@@ -29,26 +29,37 @@ extern DebugDraw* g_debugDraw;
extern Camera g_camera;
extern Profiler* g_profiler;
static void BuildGrid(b3Mesh* mesh, u32 w, u32 h, bool randomY = false)
void BuildGrid(b3Mesh* mesh, u32 w, u32 h, bool randomY = false)
{
b3Vec3 t;
t.x = -0.5f * float32(w);
t.y = 0.0f;
t.z = -0.5f * float32(h);
if (w == 0 && h == 0)
{
mesh->vertexCount = 0;
mesh->triangleCount = 0;
return;
}
mesh->vertexCount = w * h;
// Square to vertex count
w += 1;
h += 1;
b3Vec3 t;
t.x = -0.5f * float32(w) + 0.5f;
t.y = 0.0f;
t.z = -0.5f * float32(h) + 0.5f;
mesh->vertexCount = h * w;
mesh->vertices = (b3Vec3*)b3Alloc(mesh->vertexCount * sizeof(b3Vec3));
for (u32 i = 0; i < w; ++i)
for (u32 i = 0; i < h; ++i)
{
for (u32 j = 0; j < h; ++j)
for (u32 j = 0; j < w; ++j)
{
u32 v1 = i * w + j;
b3Vec3 v;
v.x = float32(i);
v.x = float32(j);
v.y = randomY ? RandomFloat(0.0f, 1.0f) : 0.0f;
v.z = float32(j);
v.z = float32(i);
v += t;
@@ -56,13 +67,13 @@ static void BuildGrid(b3Mesh* mesh, u32 w, u32 h, bool randomY = false)
}
}
mesh->triangleCount = 2 * (w - 1) * (h - 1);
mesh->triangleCount = 2 * (h - 1) * (w - 1);
mesh->triangles = (b3Triangle*)b3Alloc(mesh->triangleCount * sizeof(b3Triangle));
u32 triangleCount = 0;
for (u32 i = 0; i < w - 1; ++i)
for (u32 i = 0; i < h - 1; ++i)
{
for (u32 j = 0; j < h - 1; ++j)
for (u32 j = 0; j < w - 1; ++j)
{
u32 v1 = i * w + j;
u32 v2 = (i + 1) * w + j;