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REVIEWED: DrawTexturePoly()

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raysan5 2021-03-28 20:07:59 +02:00
parent 668ba870e4
commit bc6b16beb2
3 changed files with 66 additions and 74 deletions
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77
examples/textures/textures_poly.c
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@ -2,17 +2,21 @@
*
* raylib [shapes] example - Draw Textured Polygon
*
* This example has been created using raylib 99.98 (www.raylib.com)
* This example has been created using raylib 3.7 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2014 Ramon Santamaria (@raysan5)
* Copyright (c) 2021 Chris Camacho (codifies - bedroomcoders.co.uk)
* Example contributed by Chris Camacho (@codifies - bedroomcoders.co.uk) and
* reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2021 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#include "raymath.h"
#define MAX_POINTS 11 // 10 points and back to the start
int main(void)
{
// Initialization
@ -20,54 +24,51 @@ int main(void)
const int screenWidth = 800;
const int screenHeight = 450;
int numPnts = 11; // 10 points and back to the start
Vector2 tPnts[] = {
(Vector2){.75, 0},
(Vector2){.25, 0},
(Vector2){0, .5},
(Vector2){0, .75},
(Vector2){.25, 1},
(Vector2){.375, .875},
(Vector2){.625, .875},
(Vector2){.75, 1},
(Vector2){1, .75},
(Vector2){1, .5},
(Vector2){.75, 0} // close the poly
Vector2 texcoords[MAX_POINTS] = {
(Vector2){ 0.75f, 0.0f },
(Vector2){ 0.25f, 0.0f },
(Vector2){ 0.0f, 0.5f },
(Vector2){ 0.0f, 0.75f },
(Vector2){ 0.25f, 1.0f},
(Vector2){ 0.375f, 0.875f},
(Vector2){ 0.625f, 0.875f},
(Vector2){ 0.75f, 1.0f},
(Vector2){ 1.0f, 0.75f},
(Vector2){ 1.0f, 0.5f},
(Vector2){ 0.75f, 0.0f} // Close the poly
};
Vector2 pnts[numPnts];
Vector2 points[MAX_POINTS] = { 0 };
// create the poly coords from the UV's
// Create the poly coords from the UV's
// you don't have to do this you can specify
// them however you want
for (int i=0; i < numPnts; i++)
for (int i = 0; i < MAX_POINTS; i++)
{
pnts[i].x = (tPnts[i].x - 0.5) * 256.0;
pnts[i].y = (tPnts[i].y - 0.5) * 256.0;
points[i].x = (texcoords[i].x - 0.5f)*256.0f;
points[i].y = (texcoords[i].y - 0.5f)*256.0f;
}
InitWindow(screenWidth, screenHeight, "raylib [textures] example - Textured Polygon");
InitWindow(screenWidth, screenHeight, "raylib [textures] example - textured polygon");
Texture tex = LoadTexture("resources/cat.png");
Texture texture = LoadTexture("resources/cat.png");
float ang = 0;
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
float ang = 0;
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// Update your variables here
//----------------------------------------------------------------------------------
ang++;
Vector2 dPnts[numPnts];
for (int i = 0; i < numPnts; i++)
{
dPnts[i] = Vector2Rotate(pnts[i], ang);
}
Vector2 positions[MAX_POINTS] = { 0 };
for (int i = 0; i < MAX_POINTS; i++) positions[i] = Vector2Rotate(points[i], ang);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
@ -75,20 +76,20 @@ int main(void)
ClearBackground(RAYWHITE);
DrawText("Textured Polygon", 20, 20, 20, DARKGRAY);
DrawText("textured polygon", 20, 20, 20, DARKGRAY);
DrawTexturePoly(tex, screenWidth/2, screenHeight/2,
dPnts, tPnts, numPnts, WHITE);
DrawTexturePoly(texture, (Vector2){ GetScreenWidth()/2, GetScreenHeight()/2 },
positions, texcoords, MAX_POINTS, WHITE);
EndDrawing();
//----------------------------------------------------------------------------------
}
UnloadTexture(tex);
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
UnloadTexture(texture); // Unload texture
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;