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@ -1251,20 +1251,20 @@ void BeginMode2D(Camera2D camera) |
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rlLoadIdentity(); // Reset current matrix (MODELVIEW) |
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rlMultMatrixf(MatrixToFloat(screenScaling)); // Apply screen scaling if required |
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//The camera in world-space is set by |
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//1. Move it to target |
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//2. Rotate by -rotation and scale by (1/zoom) |
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// The camera in world-space is set by |
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// 1. Move it to target |
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// 2. Rotate by -rotation and scale by (1/zoom) |
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// When setting higher scale, it's more intuitive for the world to become bigger (= camera become smaller), |
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// not for the camera getting bigger, hence the invert. Same deal with rotation. |
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//3. Move it by (-offset); |
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// 3. Move it by (-offset); |
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// Offset defines target transform relative to screen, but since we're effectively "moving" screen (camera) |
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// we need to do it into opposite direction (inverse transform) |
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// |
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//Having camera transform in world-space, inverse of it gives the modelview transform. |
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//Since (A*B*C)' = C'*B'*A', the modelview is |
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//1. Move to offset |
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//2. Rotate and Scale |
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//3. Move by -target |
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// Having camera transform in world-space, inverse of it gives the modelview transform. |
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// Since (A*B*C)' = C'*B'*A', the modelview is |
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// 1. Move to offset |
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// 2. Rotate and Scale |
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// 3. Move by -target |
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Matrix matOrigin = MatrixTranslate(-camera.target.x, -camera.target.y, 0.0f); |
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Matrix matRotation = MatrixRotate((Vector3){ 0.0f, 0.0f, 1.0f }, camera.rotation*DEG2RAD); |
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Matrix matScale = MatrixScale(camera.zoom, camera.zoom, 1.0f); |
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