Fix macOS clang warnings: RAND_MAX float cast, char comparison, deprecated sprintf, std::string include

Author: pepc84

src/Processing.cpp

@@ -45,7 +45,13 @@
 // Uncomment + drop stb_image_write.h to enable saveFrame()/save():
 // #define STB_IMAGE_WRITE_IMPLEMENTATION
 #define STB_IMAGE_WRITE_IMPLEMENTATION
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #include "stb_image_write.h"
+#pragma clang diagnostic pop
+#pragma GCC diagnostic pop
 
 // ── Manual glu replacements (no GLU header needed) ───────────────────────────
 static void _gluPerspective(double fovY_deg, double aspect, double zNear, double zFar) {
@@ -2210,7 +2216,7 @@ void PApplet::drawTTFStr(float x, float y, const ::std::string& s) {
     glColor4f(fillR, fillG, fillB, fillA);
     float cx = x;
     for (char ch : s) {
-        if (ch < 32 || ch >= 128) continue;
+        if ((unsigned char)ch < 32 || (unsigned char)ch >= 128) continue;
         stbtt_aligned_quad q;
         stbtt_GetBakedQuad(g_ttf.chars, g_ttf.atlasW, g_ttf.atlasH,
                            ch - 32, &cx, &y, &q, 1);

src/Processing.h

@@ -375,12 +375,12 @@ class PVector {
     // Static constructors
     static PVector fromAngle(float a, float len=1.0f) { return PVector(::std::cos(a)*len, ::std::sin(a)*len); }
     static PVector random2D() {
-        float a = static_cast<float>(rand()) / RAND_MAX * 6.28318f;
+        float a = static_cast<float>(rand()) / (float)RAND_MAX * 6.28318f;
         return fromAngle(a);
     }
     static PVector random3D() {
-        float t = static_cast<float>(rand()) / RAND_MAX * 6.28318f;
-        float p = ::std::acos(2.0f * static_cast<float>(rand()) / RAND_MAX - 1.0f);
+        float t = static_cast<float>(rand()) / (float)RAND_MAX * 6.28318f;
+        float p = ::std::acos(2.0f * static_cast<float>(rand()) / (float)RAND_MAX - 1.0f);
         return PVector(::std::sin(p)*::std::cos(t), ::std::sin(p)*::std::sin(t), ::std::cos(p));
     }