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This commit is contained in:
Ray 2019-05-20 16:36:42 +02:00
parent a43a7980a3
commit b525039e0a
96 changed files with 1301 additions and 1317 deletions
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49
examples/shaders/shaders_julia_set.c
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@ -26,7 +26,7 @@
// A few good julia sets
const float POINTS_OF_INTEREST[6][2] =
{
{
{ -0.348827, 0.607167 },
{ -0.786268, 0.169728 },
{ -0.8, 0.156 },
@ -35,7 +35,7 @@ const float POINTS_OF_INTEREST[6][2] =
{ -0.70176, -0.3842 },
};
int main()
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
@ -47,16 +47,16 @@ int main()
// Load julia set shader
// NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
Shader shader = LoadShader(0, FormatText("resources/shaders/glsl%i/julia_set.fs", GLSL_VERSION));
// c constant to use in z^2 + c
float c[2] = { POINTS_OF_INTEREST[0][0], POINTS_OF_INTEREST[0][1] };
// Offset and zoom to draw the julia set at. (centered on screen and default size)
float offset[2] = { -(float)screenWidth/2, -(float)screenHeight/2 };
float zoom = 1.0f;
Vector2 offsetSpeed = { 0.0f, 0.0f };
// Get variable (uniform) locations on the shader to connect with the program
// NOTE: If uniform variable could not be found in the shader, function returns -1
int cLoc = GetShaderLocation(shader, "c");
@ -64,35 +64,34 @@ int main()
int offsetLoc = GetShaderLocation(shader, "offset");
// Tell the shader what the screen dimensions, zoom, offset and c are
float screenDims[2] = { (float)GetScreenWidth(), (float)GetScreenHeight() };
float screenDims[2] = { (float)screenWidth, (float)screenHeight };
SetShaderValue(shader, GetShaderLocation(shader, "screenDims"), screenDims, UNIFORM_VEC2);
SetShaderValue(shader, cLoc, c, UNIFORM_VEC2);
SetShaderValue(shader, zoomLoc, &zoom, UNIFORM_FLOAT);
SetShaderValue(shader, offsetLoc, offset, UNIFORM_VEC2);
// Create a RenderTexture2D to be used for render to texture
RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight);
int incrementSpeed = 0; // Multiplier of speed to change c value
bool showControls = true; // Show controls
bool pause = false; // Pause animation
SetTargetFPS(60); // Set the window to run at 60 frames-per-second
int incrementSpeed = 0; // Multiplier of speed to change c value
bool showControls = true; // Show controls
bool pause = false; // Pause animation
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// Press [1 - 6] to reset c to a point of interest
if (IsKeyPressed(KEY_ONE) ||
IsKeyPressed(KEY_TWO) ||
IsKeyPressed(KEY_THREE) ||
IsKeyPressed(KEY_FOUR) ||
IsKeyPressed(KEY_FIVE) ||
if (IsKeyPressed(KEY_ONE) ||
IsKeyPressed(KEY_TWO) ||
IsKeyPressed(KEY_THREE) ||
IsKeyPressed(KEY_FOUR) ||
IsKeyPressed(KEY_FIVE) ||
IsKeyPressed(KEY_SIX))
{
if (IsKeyPressed(KEY_ONE)) c[0] = POINTS_OF_INTEREST[0][0], c[1] = POINTS_OF_INTEREST[0][1];
@ -107,7 +106,7 @@ int main()
if (IsKeyPressed(KEY_SPACE)) pause = !pause; // Pause animation (c change)
if (IsKeyPressed(KEY_F1)) showControls = !showControls; // Toggle whether or not to show controls
if (!pause)
{
if (IsKeyPressed(KEY_RIGHT)) incrementSpeed++;
@ -121,10 +120,10 @@ int main()
if (IsMouseButtonDown(MOUSE_RIGHT_BUTTON)) zoom -= zoom*0.003f;
Vector2 mousePos = GetMousePosition();
offsetSpeed.x = mousePos.x -(float)screenWidth/2;
offsetSpeed.y = mousePos.y -(float)screenHeight/2;
// Slowly move camera to targetOffset
offset[0] += GetFrameTime()*offsetSpeed.x*0.8f;
offset[1] += GetFrameTime()*offsetSpeed.y*0.8f;
@ -148,7 +147,7 @@ int main()
BeginDrawing();
ClearBackground(BLACK); // Clear the screen of the previous frame.
// Using a render texture to draw Julia set
BeginTextureMode(target); // Enable drawing to texture
ClearBackground(BLACK); // Clear the render texture
@ -165,7 +164,7 @@ int main()
BeginShaderMode(shader);
DrawTexture(target.texture, 0, 0, WHITE);
EndShaderMode();
if (showControls)
{
DrawText("Press Mouse buttons right/left to zoom in/out and move", 10, 15, 10, RAYWHITE);