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Add DrawGridEx function

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This commit is contained in:
Alexander Zubov 2026-05-01 02:51:02 +02:00
parent d768dae402
commit 7cb41956b7
2 changed files with 40 additions and 0 deletions
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1
src/raylib.h
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@ -1586,6 +1586,7 @@ RLAPI void DrawCapsuleWires(Vector3 startPos, Vector3 endPos, float radius, int
RLAPI void DrawPlane(Vector3 centerPos, Vector2 size, Color color); // Draw a plane XZ
RLAPI void DrawRay(Ray ray, Color color); // Draw a ray line
RLAPI void DrawGrid(int slices, float spacing); // Draw a grid (centered at (0, 0, 0))
RLAPI void DrawGridEx(int slices, float spacing, Vector3 color, Vector3 position, Vector3 normal, Vector3 tangent); // Draw a grid with extended parameters
//------------------------------------------------------------------------------------
// Model 3d Loading and Drawing Functions (Module: models)

39
src/rmodels.c
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@ -1098,6 +1098,45 @@ void DrawGrid(int slices, float spacing)
rlEnd();
}
// Draw a grid with extended parameters
void DrawGridEx(int slices, float spacing, Vector3 color, Vector3 position, Vector3 normal, Vector3 tangent)
{
int halfSlices = slices / 2;
// Build basis vectors
Vector3 n = Vector3Normalize(normal);
Vector3 t = Vector3Normalize(tangent);
Vector3 b = Vector3Normalize(Vector3CrossProduct(n, t));
t = Vector3CrossProduct(n, b); // Ensure normal and tangent vectors are orthogonal
rlBegin(RL_LINES);
rlColor3f(color.x, color.y, color.z);
for (int i = -halfSlices; i <= halfSlices; i++)
{
float f = (float)i * spacing;
Vector3 t1 = Vector3Add(position,
Vector3Add(Vector3Scale(t, -halfSlices * spacing),
Vector3Scale(b, f)));
Vector3 t2 = Vector3Add(position,
Vector3Add(Vector3Scale(t, halfSlices * spacing),
Vector3Scale(b, f)));
Vector3 b1 = Vector3Add(position,
Vector3Add(Vector3Scale(b, -halfSlices * spacing),
Vector3Scale(t, f)));
Vector3 b2 = Vector3Add(position,
Vector3Add(Vector3Scale(b, halfSlices * spacing),
Vector3Scale(t, f)));
rlVertex3f(t1.x, t1.y, t1.z);
rlVertex3f(t2.x, t2.y, t2.z);
rlVertex3f(b1.x, b1.y, b1.z);
rlVertex3f(b2.x, b2.y, b2.z);
}
rlEnd();
}
// Load model from files (mesh and material)
Model LoadModel(const char *fileName)
{