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ADDED: DrawTriangle3D() and DrawTriangleStrip3D()

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Those functions could be very useful for custom triangle data drawing, using internal batch system.
This commit is contained in:
raysan5 2020-05-07 12:46:45 +02:00
parent 2e8299742b
commit f6ca045735
2 changed files with 44 additions and 1 deletions
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42
src/models.c
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@ -169,6 +169,48 @@ void DrawCircle3D(Vector3 center, float radius, Vector3 rotationAxis, float rota
rlPopMatrix();
}
// Draw a color-filled triangle (vertex in counter-clockwise order!)
void DrawTriangle3D(Vector3 v1, Vector3 v2, Vector3 v3, Color color)
{
if (rlCheckBufferLimit(3)) rlglDraw();
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
rlVertex3f(v1.x, v1.y, v1.z);
rlVertex3f(v2.x, v2.y, v2.z);
rlVertex3f(v3.x, v3.y, v3.z);
rlEnd();
}
// Draw a triangle strip defined by points
void DrawTriangleStrip3D(Vector3 *points, int pointsCount, Color color)
{
if (pointsCount >= 3)
{
if (rlCheckBufferLimit(3*(pointsCount - 2))) rlglDraw();
rlBegin(RL_TRIANGLES);
rlColor4ub(color.r, color.g, color.b, color.a);
for (int i = 2; i < pointsCount; i++)
{
if ((i%2) == 0)
{
rlVertex3f(points[i].x, points[i].y, points[i].z);
rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z);
rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z);
}
else
{
rlVertex3f(points[i].x, points[i].y, points[i].z);
rlVertex3f(points[i - 1].x, points[i - 1].y, points[i - 1].z);
rlVertex3f(points[i - 2].x, points[i - 2].y, points[i - 2].z);
}
}
rlEnd();
}
}
// Draw cube
// NOTE: Cube position is the center position
void DrawCube(Vector3 position, float width, float height, float length, Color color)