Allow constants

include/glez/draw.hpp

@@ -22,8 +22,8 @@ void rect_textured(float x, float y, float w, float h, rgba color,
     float angle);
 void circle(float x, float y, float radius, rgba color, float thickness, int steps);
 
-void string(float x, float y, const std::string& string, font& font, rgba color,
+void string(float x, float y, const std::string& string, const font& font, rgba color,
     float* width, float* height);
-void outlined_string(float x, float y, const std::string& string, font& font,
+void outlined_string(float x, float y, const std::string& string, const font& font,
     rgba color, rgba outline, float* width, float* height);
 } // namespace glez::draw

include/glez/font.hpp

@@ -22,8 +22,8 @@ public:
     glez::font& operator=(glez::font&&);
 
     // void stringSize(std::string_view string, float* width, float* height);
-    void stringSize(const std::string& string, float* width, float* height);
-    inline bool isLoaded() { return this->m_font != nullptr && this->atlas != nullptr; };
+    void stringSize(const std::string& string, float* width, float* height) const;
+    inline bool isLoaded() const { return this->m_font != nullptr && this->atlas != nullptr; };
 
 public:
     texture_font_t* m_font = nullptr;

src/CMakeLists.txt

@@ -1,7 +1,8 @@
 target_sources(glez PRIVATE
+        "${CMAKE_CURRENT_LIST_DIR}/color.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/draw.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/glez.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/font.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/texture.cpp")
 
-add_subdirectory(picopng)
+add_subdirectory(picopng)

src/color.cpp

@@ -0,0 +1,25 @@
+/*
+ * Created by Rebekah Rowe on 04.07.22. GPL3
+ */
+
+#include <cmath>
+#include <chrono>
+#include <iostream>
+#include <glm/gtx/color_space.hpp>
+
+#include <glez/color.hpp>
+
+namespace glez::color {
+
+static auto start_time = std::chrono::steady_clock::now();
+rgba RainbowCurrent() {
+    std::chrono::duration<float, std::deca> ctime = std::chrono::steady_clock::now() - start_time;
+    auto ret_raw = glm::rgbColor(glm::vec3(fabs(sin(ctime.count())) * 360.0f, 0.85f, 0.9f));
+    rgba ret;
+    ret.r = ret_raw.r;
+    ret.g = ret_raw.g;
+    ret.b = ret_raw.b;
+    return ret;
+}
+
+} // namespace glez::color

src/draw.cpp

@@ -21,7 +21,7 @@ static GLuint triangle[3] = { 0, 1, 2 };
 } // namespace indices
 
 void internal_draw_string(float x, float y, const std::string& string,
-    glez::font& font, glez::rgba color, float* width, float* height) {
+    const glez::font& font, glez::rgba color, float* width, float* height) {
     assert(font.isLoaded());
     auto* fnt = font.m_font;
     float pen_x = x;
@@ -202,14 +202,14 @@ void circle(float x, float y, float radius, rgba color, float thickness,
     }
 }
 
-void string(float x, float y, const std::string& string, font& font, rgba color, float* width, float* height) {
+void string(float x, float y, const std::string& string, const font& font, rgba color, float* width, float* height) {
     auto fnt = font.m_font;
     fnt->rendermode = RENDER_NORMAL;
     fnt->outline_thickness = 0.0f;
     internal_draw_string(x, y, string, font, color, width, height);
 }
 
-void outlined_string(float x, float y, const std::string& string, font& font, rgba color, rgba outline, float* width, float* height) {
+void outlined_string(float x, float y, const std::string& string, const font& font, rgba color, rgba outline, float* width, float* height) {
     auto fnt = font.m_font;
     fnt->rendermode = RENDER_OUTLINE_POSITIVE;
     fnt->outline_thickness = 1.0f;

src/font.cpp

@@ -36,7 +36,7 @@ glez::font& font::operator=(glez::font&& var) {
     var.atlas = nullptr;
     return *this;
 }
-void font::stringSize(const std::string& string, float* width, float* height) {
+void font::stringSize(const std::string& string, float* width, float* height) const {
     assert(this->isLoaded());
     float penX = 0;