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Added function: DrawLineEx()

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Supports line thickness
This commit is contained in:
raysan5 2017-03-05 21:04:07 +01:00
parent aaf9c648d3
commit 59038bae96
3 changed files with 59 additions and 8 deletions
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22
examples/core_basic_window.c
View file

@ -39,6 +39,11 @@ int main()
// Update
//----------------------------------------------------------------------------------
// TODO: Update your variables here
float dx = 600 - 100;
float dy = 105 - 405;
float d = sqrtf(dx*dx + dy*dy);
float angle = asinf(dy/d);
//----------------------------------------------------------------------------------
// Draw
@ -47,7 +52,22 @@ int main()
ClearBackground(RAYWHITE);
DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
//DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
DrawRectangle(100, 400, 1, 10, BLACK);
DrawRectangle(96, 404, 10, 1, BLACK);
DrawRectangle(600, 100, 1, 10, BLACK);
DrawRectangle(596, 104, 10, 1, BLACK);
DrawLine(100, 405, 600, 105, RED);
// Draw lines using textures
/*
DrawTexturePro(GetDefaultTexture(), (Rectangle){ 0, 0, GetDefaultTexture().width, GetDefaultTexture().height },
(Rectangle){ 100, 405, (float)GetDefaultTexture().width*d, 1 },
(Vector2){ 0, (float)GetDefaultTexture().height/2 }, -RAD2DEG*angle, BLUE);
*/
EndDrawing();
//----------------------------------------------------------------------------------

15
src/raylib.h
View file

@ -98,13 +98,13 @@
#define RAD2DEG (180.0f/PI)
// raylib Config Flags
#define FLAG_SHOW_LOGO 1 // Set this flag to show raylib logo at startup
#define FLAG_FULLSCREEN_MODE 2 // Set this flag to run program in fullscreen
#define FLAG_WINDOW_RESIZABLE 4 // Set this flag to allow resizable window
#define FLAG_WINDOW_DECORATED 8 // Set this flag to show window decoration (frame and buttons)
#define FLAG_WINDOW_TRANSPARENT 16 // Set this flag to allow transparent window
#define FLAG_MSAA_4X_HINT 32 // Set this flag to try enabling MSAA 4X
#define FLAG_VSYNC_HINT 64 // Set this flag to try enabling V-Sync on GPU
#define FLAG_SHOW_LOGO 1 // Set to show raylib logo at startup
#define FLAG_FULLSCREEN_MODE 2 // Set to run program in fullscreen
#define FLAG_WINDOW_RESIZABLE 4 // Set to allow resizable window
#define FLAG_WINDOW_DECORATED 8 // Set to show window decoration (frame and buttons)
#define FLAG_WINDOW_TRANSPARENT 16 // Set to allow transparent window
#define FLAG_MSAA_4X_HINT 32 // Set to try enabling MSAA 4X
#define FLAG_VSYNC_HINT 64 // Set to try enabling V-Sync on GPU
// Keyboard Function Keys
#define KEY_SPACE 32
@ -763,6 +763,7 @@ RLAPI void DrawPixel(int posX, int posY, Color color);
RLAPI void DrawPixelV(Vector2 position, Color color); // Draw a pixel (Vector version)
RLAPI void DrawLine(int startPosX, int startPosY, int endPosX, int endPosY, Color color); // Draw a line
RLAPI void DrawLineV(Vector2 startPos, Vector2 endPos, Color color); // Draw a line (Vector version)
RLAPI void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color); // Draw a line defining thickness
RLAPI void DrawCircle(int centerX, int centerY, float radius, Color color); // Draw a color-filled circle
RLAPI void DrawCircleGradient(int centerX, int centerY, float radius, Color color1, Color color2); // Draw a gradient-filled circle
RLAPI void DrawCircleV(Vector2 center, float radius, Color color); // Draw a color-filled circle (Vector version)

30
src/shapes.c
View file

@ -103,6 +103,36 @@ void DrawLineV(Vector2 startPos, Vector2 endPos, Color color)
rlEnd();
}
// Draw a line defining thickness
void DrawLineEx(Vector2 startPos, Vector2 endPos, float thick, Color color)
{
float dx = endPos.x - startPos.x;
float dy = endPos.y - startPos.y;
float d = sqrtf(dx*dx + dy*dy);
float angle = asinf(dy/d);
rlEnableTexture(GetDefaultTexture().id);
rlPushMatrix();
rlTranslatef((float)startPos.x, (float)startPos.y, 0);
rlRotatef(-RAD2DEG*angle, 0, 0, 1);
rlTranslatef(0, -thick/2.0f, 0);
rlBegin(RL_QUADS);
rlColor4ub(color.r, color.g, color.b, color.a);
rlNormal3f(0.0f, 0.0f, 1.0f);
rlVertex2f(0.0f, 0.0f);
rlVertex2f(0.0f, thick);
rlVertex2f(d, thick);
rlVertex2f(d, 0.0f);
rlEnd();
rlPopMatrix();
rlDisableTexture();
}
// Draw a color-filled circle
void DrawCircle(int centerX, int centerY, float radius, Color color)
{